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William du Pont Jr. (February 11, 1896 – December 31, 1965) was an English-born American businessman and banker, and a prominent figure in the sport of Thoroughbred horse racing.[1] He developed and designed more than 20 racing venues, including Fair Hill at his 5,000-acre estate in Maryland. A member of the Delaware Du Pont family, he was the son of William du Pont and Annie Rogers Zinn, and brother to Marion duPont Scott, a noted horsewoman and breeder.

Key Information

Early life and education

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William (also called Willie) was born at Loseley Park, a 16th-century manor in Surrey, England. He was the second child and only son of Annie Zinn (née Rogers) and William du Pont. His older sister was Marion, and they grew up at Montpelier, the historic home of President James Madison, which their parents had bought and expanded.

They both were educated in private schools and became interested in the world of thoroughbred horse racing, including steeplechase, hunts, and horse shows. William specialized in thoroughbred racing and breeding. Marion also became known for her contributions to horse racing and breeding.

Marriages, family, and career

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On January 1, 1919, du Pont married Jean Liseter Austin. Their marriage celebration in Rosemont, Pennsylvania, was billed as the "Wedding of the Century" in media accounts because of the wealth of each family. Jean's father, William Liseter Austin, was a railroad baron at the Baldwin Locomotive Works. He gave the couple more than 600 acres (2.4 km2) of land as a wedding gift. William's father built Liseter Hall for them on the property in 1922. The three-story Georgian mansion was a replica of Montpelier, where du Pont had grown up.[2]

du Pont with his wife Jean Liseter, 1919

Du Pont was elected to the board of directors of the Delaware Trust Company, where his father was president (and later chairman of the board), in 1921. His career with the bank would continue until his death. In 1928, William inherited the Bellevue Hall estate in Delaware upon the death of his father. The estate featured a Gothic Revival castle built in 1855, which du Pont had remodeled into another replica of his boyhood home of Montpelier. His father's death also created a vacancy in the presidency of the Delaware Trust Company, and William ascended to the position.[3][4]

Du Pont and his wife developed a notable horse farm on their property. In the 1920s and 1930s, Liseter Hall Farm was considered the ne plus ultra of Mid-Atlantic horse facilities. In addition to the indoor galloping track, the first in the United States, the farm featured a large barn for race horses; a 40-foot (12 m)-wide by 120-foot (37 m)-long indoor riding ring, used by trainers for schooling young horses; the half-mile training track and its adjacent combination viewing stand/water tower; a breeding shed; a hunter barn; a show horse barn; a loading barn with ramps, for transporting horses to competition; and a grassy, half-mile chute that connected the training track with the race horse, hunter and show horse barns.[2] Similar facilities were built at the Bellevue Hall estate, including a hunting barn, two indoor training tracks, and an outdoor track.

Du Pont and Jean had four children together, two girls and two boys. They divorced in February 1941, when the youngest, John, was 2 years old.[5] Jean Liseter du Pont retained the property her father gave her. Following the divorce, du Pont moved his permanent residence to Bellevue Hall.[6]

Du Pont remarried in 1947 to Margaret Osborne, a tennis champion. He built both an indoor and outdoor tennis court at Bellevue for the benefit of his wife. They had a son, William du Pont III, born July 22, 1952. That same year, du Pont was made chairman of the board at the Delaware Trust Company, retaining his position as president as well. Osborne and du Pont divorced in 1964. Their son William du Pont III also was active with thoroughbreds and later owned Pillar Stud in Lexington, Kentucky.

Foxcatcher Farm

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At Liseter Hall Farm, du Pont Jr. established a large thoroughbred racing stable in the 1920s; he raced its horses under the nom de course, Foxcatcher Farm.[2] During this period, he also established breeding operations at Bellevue Hall, his family's estate in Wilmington, Delaware. He had another operation at Fair Hill, where he established a steeplechase course on his 1,000 acres (4.0 km2) facility.[2]

In 1927, du Pont imported Satrap from England and brought the son of The Tetrarch to stand at his second facility, the new Walnut Hall Farm near Boyce, Virginia.[7] In 1936, duPont was part of the syndicate that bought and imported the stallion Blenheim, Aga Khan's Epsom Derby winner.

Du Pont's racing operation was managed for several years by the trainer Preston Burch, selected for the U.S. Racing Hall of Fame.

In the mid-1930s, Richard Handlen took over as the trainer, managing the stable operation into the 1960s. During this time, du Pont won the 1938 Preakness Stakes with Dauber, the second race of the Triple Crown for three-year-olds.[8] Other of his horses won six American championships and prominent races:

Their successes contributed to the value and reputation of his stables.

Du Pont's interests in racing extended to the development and design of racecourses. In all, he created 23 racecourses, including Fair Hill, a steeplechase course at Fair Hill in Cecil County, Maryland, and Delaware Park Racetrack for flat racing. The latter opened on June 26, 1937. He had also helped write the legislation to authorize development of the park and was the major shareholder.[9] The Thoroughbred farms and racing were important parts of the Delaware and Maryland economies in those decades, although racing gradually drew smaller crowds.

He died at the Wilmington Medical Center at age 69 on December 31, 1965.[1]

Montpelier

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In 1928, Marion duPont Scott, the older child, inherited Montpelier after their father's death. Located four miles (6 km) south of Orange, Virginia, the estate had been the plantation home of James Madison, fourth President of the United States. In 1934, William and Marion established the Montpelier Races, a National Steeplechase event, which continues to be run each fall on the grounds at Montpelier.

At her death in 1983 Scott left the estate, designated a National Historic Landmark, to the National Trust for Historic Preservation. Her father's will had said that if she were childless, the property would be inherited by her brother and his children. Her will included a provision for his children to sell or give their interests in the property to the National Trust or forfeit their share of a separate $3.1 million trust. In addition, she provided $10 million to the National Trust to buy the property and to establish an endowment. As her brother had died in 1965, his five children inherited Montpelier. Three sold or gave their interests to the National Trust. Although two nephews sued the National Trust in an effort to break the will, they finally sold their interests in 1984.[10]

The National Trust acquired the property to preserve and interpret as a public history site for James and Dolley Madison, his presidency, and the architecture and society of Montpelier. Following a widely publicized scandal in which the Trust fired all of its staff members who had been working towards increased representation of Americans descended from many James Madison's numerous slaves of African heritage on the estate's board of directors, the trust reached an agreement with the descendants group granting the group a majority of board seats, and has since that time been making efforts to reemphasize the history taught at the former plantation around the important historical context of James Madison's participation in slavery in the United States.[11][12][13]

Legacy and honors

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Following du Pont's death, none of his heirs were interested in retaining the Bellevue Hall estate due to its extensive collection of recreational facilities and the upkeep they required. In 1976, the property was purchased by the state of Delaware and opened to the public as Bellevue State Park.[14] In 1979, du Pont was honored posthumously with induction in the Delaware Sports Museum and Hall of Fame.[15]

References

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William du Pont Jr.

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William Kemble du Pont Jr. (February 11, 1896 – December 31, 1965) was an American banker, businessman, and equestrian from the wealthy , best known for his pioneering work in as a breeder, owner, and designer of racetracks. Born in to Sr. and Annie Rogers Zinn, he grew up immersed in equestrian traditions at family estates like Montpelier in and Bellevue Hall in , fostering lifelong passions for , foxhunting, and track construction. Du Pont's professional career centered on banking, where he rose to become president of the Delaware Trust Company in —the youngest such appointee in Wilmington at the time—and later chairman, overseeing expansions like the Delaware Trust Building. Beyond finance, he channeled family wealth into and , developing expansive properties such as the 5,000-acre Fair Hill estate in , which featured a custom National Cup Course for steeplechasing and served as a hub for breeding and training. An authority on racetrack , he designed Delaware Park Racetrack in partnership with others and contributed to over 20 venues, while authoring Delaware's racing legislation and co-founding the track's operations until his death. His breeding program yielded champions, including Parlo, voted the 1940 national three-year-old of the year, and Berlo, honored similarly in 1960; he also had five horses start in the . Du Pont promoted through his second marriage to champion Margaret and initiatives like constructing Delaware's first all-weather courts, earning the 1957 Laymon Honor Award for advancing the sport. Married first to Jean Liseter Austin in 1919 (four children; divorced 1941) and then to Osborne in 1948 (one son; divorced 1964), he supported philanthropy for organizations like the Red Cross and , leaving a legacy in Delmarva region's sporting infrastructure.

Early Life

Birth and Family Origins

William du Pont Jr., formally William Kemble du Pont Jr., was born on February 11, 1896, at , a historic manor in , . He was the second child and only son of William Kemble du Pont Sr. (1855–1928), an American industrialist, and Annie Rogers Zinn (1858–1927), with an older sister, (1894–1983), who later became renowned for her equestrian achievements. The , into which William Jr. was born, traces its American lineage to Pierre Samuel du Pont de Nemours (1739–1817), a French economist and minor noble who fled revolutionary turmoil and emigrated to the around 1800 with his sons. Pierre Samuel's son, (1771–1834), established E.I. du Pont de Nemours and Company in 1802 near , initially as a gunpowder mill exploiting the Brandywine River's water power and local willow supplies for charcoal; this enterprise laid the foundation for the family's industrial dominance and vast wealth, evolving into a chemical conglomerate by the early . Sr., the youngest son of Civil War general and DuPont executive (1812–1889), held directorial roles in the company and exemplified the family's shift toward diversified investments beyond manufacturing. This patrilineal heritage positioned William Jr. within one of America's preeminent industrial dynasties, characterized by strategic marriages, land acquisitions, and influence in finance and politics, though internal family disputes occasionally fractured unity, as seen in earlier generations' contests over company control. The English birthplace reflected the peripatetic lifestyle of the affluent du Ponts, who maintained estates across continents amid their global business pursuits.

Childhood and Formative Experiences

William du Pont Jr. was born on February 11, 1896, in , , as the second child and only son of Sr., a prominent figure in the enterprises, and Annie Rogers Zinn du Pont. His elder sister, Marion, had been born two years earlier in , during a family visit to the . The family's time in England reflected the international scope of du Pont interests, but their roots were firmly in American industry and estates. In 1902, at age six, du Pont relocated with his family to Montpelier, the historic estate acquired by his father in 1901, marking a return to American soil after residing at Binfield Park in . The du Ponts extensively renovated and expanded the property, immersing the children in an environment of vast grounds, renovated , and agricultural pursuits that underscored the family's wealth derived from chemical manufacturing and banking. Childhood at Montpelier fostered du Pont's early affinity for equestrian activities and rural sports. He and his sister Marion quickly developed a passion for horses, clamoring for ponies shortly after the move, which sparked lifelong engagements in riding, breeding, and racing. From an early age, they enjoyed riding horses and raising champion fox hounds on the estate, activities that honed skills in and . These experiences, amid the privileges of family estates and resources, laid the foundation for du Pont's later prominence in and foxhunting.

Education and Early Influences

Formal Education

William du Pont Jr. attended St. Paul's School, an elite Episcopal boarding school in , for his early . This institution, known for preparing students from affluent families for leadership roles, emphasized classical studies, athletics, and character development, aligning with the du Pont family's emphasis on discipline and horsemanship. Subsequently, from 1914 to 1916, he enrolled at St. Luke's School in , another preparatory boarding school focused on rigorous academics and extracurriculars suitable for young men of means. There, du Pont Jr. honed skills in equestrian activities, which foreshadowed his lifelong passion for and steeplechase, though formal records do not detail specific academic achievements or graduation. No verifiable evidence indicates attendance at a or ; instead, du Pont Jr. transitioned directly into family enterprises and sporting endeavors following preparatory schooling, reflecting the era's norms for heirs of industrial dynasties who prioritized practical inheritance over higher academia.

Introduction to Equestrian Sports

William du Pont Jr. was born on February 11, 1896, at in , , to Sr. and Annie Rogers Zinn, and relocated to the in 1902 with his family. His early exposure to equestrian activities occurred during childhood at the family estates, particularly Montpelier in —purchased by his parents in 1900—and Bellevue Hall in , where the expansive grounds facilitated frequent interaction with horses. His father constructed a dedicated pony barn at Montpelier for du Pont Jr. and his sister Marion, enabling them to begin riding and developing an affinity for equine pursuits from a young age. From these formative years, du Pont Jr. and Marion engaged in horseback riding and the breeding of , activities integral to the du Pont family's sporting traditions. The estates' environments, rich with hunting dogs and riding opportunities, instilled a deep appreciation for horses, laying the groundwork for his lifelong involvement in equestrian disciplines. By 1912, at age 16, du Pont Jr. established his first pack at Montpelier, marking an early organized step into hunt-related , which often involved riding alongside hounds during . Together with his sister, du Pont Jr. organized the Montpelier Horse Show and Hunt Race Meeting, events that highlighted their youthful enthusiasm for competitive riding and steeplechase elements inherent in hunt racing. These experiences at family properties not only honed basic riding skills but also introduced foundational knowledge of care, breeding, and the social aspects of equestrian sports prevalent among early 20th-century American elites. This childhood immersion transitioned seamlessly into more advanced pursuits, shaping his future contributions to and infrastructure.

Professional Career

Banking and Financial Roles

William du Pont Jr. commenced his banking career at the Delaware Trust Company in , shortly after completing his education, maintaining an affiliation with the institution throughout his professional life. He initially served on the , a position that positioned him for leadership amid family involvement in the bank's operations. Upon the death of his father, William du Pont Sr., in July 1928, du Pont Jr. was elected president of the Trust Company in late 1928, making him the youngest bank president in Wilmington at the age of 32. He retained this role for over three decades, overseeing key developments such as the expansion and construction of the Delaware Trust Building between 1928 and 1930, which reflected the institution's growth during the late 1920s . In 1952, du Pont Jr. assumed the additional position of chairman of the board while continuing as president, guiding the bank through post-World War II economic conditions and Delaware's industrial maturation tied to the 's chemical enterprises. His leadership emphasized conservative financial practices, consistent with the era's regional banking norms, though specific lending or investment decisions attributable to him remain undocumented in primary records beyond the bank's steady asset accumulation. No evidence indicates involvement in broader financial ventures outside this institution, distinguishing his path from other members active in corporate finance at E.I. du Pont de Nemours and Company.

Real Estate and Development Initiatives

William du Pont Jr. directed significant efforts toward real estate development in the Delaware Valley, particularly in and around Wilmington, Delaware, alongside his banking career at Delaware Trust Corporation. As president of the bank from 1928 onward, he supervised the expansion of the Delaware Trust Building at East 9th Street and North Market Street, with construction occurring from July 1928 to June 1930, enhancing the institution's facilities in downtown Wilmington. In 1927, du Pont initiated the Westover Hills project, the first upscale suburban housing development in Wilmington, transforming land into planned residential areas that set a for subsequent suburban growth in the region. His broader land development activities in Wilmington, documented in family papers at the , encompassed strategic property acquisitions and planning, though specifics beyond these initiatives remain tied to personal estates like Bellevue Hall, which he remodeled extensively after inheriting it in 1928. These endeavors reflected a focus on both commercial infrastructure and residential expansion, yielding lasting impacts visible in the Delaware Valley's .

Personal Life

Marriages


William du Pont Jr. married Jean Liseter Austin on January 1, 1919, in Rosemont, Lower Merion Township, . The marriage lasted over two decades, during which they resided at Liseter Hall Farm near and raised four children, though the couple grew apart in the late . They divorced in 1941. Following the divorce, du Pont relocated his primary residence to Bellevue Hall in . In 1947, at age 51, he married 29-year-old Margaret Evelyn Osborne, a prominent American player who had achieved world No. 1 ranking and multiple Grand Slam titles. The union produced one son, III, born in 1952, and du Pont supported Osborne's continued career, including building tennis facilities at their estates. Osborne filed for divorce in , citing , with the decree finalized on March 27, 1964.

Children and Family Dynamics

William du Pont Jr. and his first wife, Jean Liseter Austin, whom he married on January 1, 1919, had four children born between 1923 and 1938. Their children were Jean Ellen du Pont (born February 23, 1923), Evelyn Rebecca Austin du Pont (born 1925, died 1999), Henry Eleuthère Irénée du Pont (born 1927, died 2002; originally named William Henry, later legally changed), and John Eleuthère du Pont (born 1938, died 2010). The family resided at the Rosemont estate near Newtown Square, , during this period. The couple separated in 1940 and divorced in 1941. Du Pont's second marriage to champion Margaret Osborne, contracted on November 26, 1947, produced one son, William du Pont III (born July 22, 1952). This marriage ended in divorce on March 27, 1964, with the stated reason of diverging interests. The du Pont children grew up amid the family's substantial wealth and estates, including access to equestrian facilities at properties like Foxcatcher Farm, though specific interpersonal dynamics are sparsely documented in primary records. The elder children from the first marriage experienced the parental separation during their formative years, while the youngest son's upbringing occurred post-divorce in the context of du Pont's ongoing sporting and business pursuits.

Sporting Contributions

Thoroughbred Breeding and Racing Achievements

William du Pont Jr. developed a substantial breeding and program in the 1920s, operating under the nom de course and stabling horses initially at Bellevue Hall in before expanding operations to include Fair Hill in . His efforts emphasized American-bred stock capable of international competition, with breeding conducted at Liseter Hall and other properties. produced multiple stakes winners, reflecting du Pont's focus on quality bloodlines derived from sires like descendants. A standout achievement came with Rosemont, a Virginia-foaled colt bred and owned by du Pont's Foxcatcher Farms and trained by Richard Handlen. In 1937, Rosemont upset in the , a premier West Coast stakes race, establishing himself as a "giant killer" by also defeating other Hall of Fame inductees during his career. The following year, Foxcatcher Farms claimed a Triple Crown classic victory when Dauber, a grandson of purchased and raced by du Pont under Handlen's training, won the 1938 by seven lengths in muddy conditions. Dauber's success highlighted du Pont's stable strength, as the colt also placed in the and that year. Overall, du Pont's program sent five horses to the , underscoring his sustained competitiveness in top-level flat racing.

Steeplechase, Polo, and Other Pursuits

William du Pont Jr. distinguished himself as a leading authority on steeplechase course design and construction, contributing to the development of numerous venues across the . In 1938, he designed the course for the Iroquois Steeplechase in , which was completed in time for that year's event. Beginning in the late 1920s, he created a prominent steeplechase course at his Fair Hill estate in , modeled after England's to replicate challenging turf conditions with sweeping turns and natural obstacles. He also constructed a steeplechase track at Delaware Park in the mid-1930s and overall designed more than 20 racing facilities, emphasizing turf quality and safety for jump racing. Du Pont contributed to equestrian literature through his introductory essay on steeplechasing in the 1938 book Hoofbeats: Drawings and Comments by Warren T. Halpin, which covered multiple disciplines including and . While his primary documented equestrian focus lay in steeplechasing and related racing, he engaged in as part of broader horsemanship pursuits during his youth, consistent with the du Pont family's traditions in . A dedicated fox hunter from childhood, du Pont served as Master of Foxhounds (MFH) for the , which he established and maintained at estates including Montpelier and Fair Hill. He relocated the pack to Fair Hill in the late 1920s, developing over 8,000 acres into prime territory with regular hunts three times weekly, fostering a legacy of organized foxhunting that influenced regional equestrian culture. His efforts integrated with steeplechasing , creating interconnected venues for breeding, , and competitive riding.

Racecourse Design and Infrastructure

William du Pont Jr. was an authority on race track construction, applying his expertise to both public venues and private training facilities. He designed and constructed Delaware Park Racetrack in Stanton, , in partnership with Donald P. Ross, with the facility opening on June 26, 1937, as the state's first and only flat racing track. This project followed his authorship of Delaware's racing legislation, which enabled legalized pari-mutuel wagering and facilitated the track's development on a 500-acre site featuring a one-mile dirt oval, grandstands for 15,000 spectators, and supporting infrastructure including stables and betting facilities. At his Fair Hill estate in , du Pont Jr. developed extensive racing infrastructure starting in the mid-1920s, after acquiring over 7,600 acres beginning in 1925. He constructed the National Cup Course, a dedicated steeplechase track, alongside training gallops and a turf course modeled after England's , with jumps and terrain designed in the late 1920s to replicate challenging national hunt conditions for preparation. These facilities included timber fences, water jumps, and a configuration supporting both flat and jumping events, serving as a prototype for steeplechase infrastructure that influenced regional equestrian development. Du Pont Jr.'s designs emphasized durability, safety, and performance optimization, incorporating composition for track surfaces and drainage systems to withstand variable , as evidenced in his work across multiple venues. He is credited with creating 23 racecourses overall, blending precision with practical horsemanship to elevate standards in American infrastructure. His contributions extended to ancillary features like starting gates, timing mechanisms, and veterinary facilities, prioritizing causal factors such as footing quality to reduce injury risks in high-speed operations.

Estates and Land Holdings

Foxcatcher Farm

Foxcatcher Farm, also known as Liseter Hall Farm, was a 600-acre estate located near Newtown Square, , where William du Pont Jr. and his first wife, Jean Liseter Austin, resided after their marriage on January 1, 1919. The property served as a primary venue for du Pont's equestrian interests, including the development of a premier horse breeding and racing operation starting in the 1920s. Horses from the farm competed under the nom de course Foxcatcher Farms, achieving notable success on the track. Among the standout thoroughbreds bred and raced by Foxcatcher Farms was Rosemont, foaled in and trained by Richard E. Handlen, which secured victories including the 1934 Eastern Shore Handicap and famously defeated in the 1937 Widener Handicap at . The estate also housed the Foxcatcher Hounds, a pack renowned among American foxhunting clubs, reflecting du Pont's passion for the that influenced his broader involvement in horse-related pursuits. Following the couple's in 1941, Jean Liseter Austin retained Liseter Hall , continuing its operations as a center for activities while du Pont Jr. shifted his primary residence to Bellevue Hall in . The farm's legacy in persisted through records of competitive seasons, such as the 1939 campaigns documented for its stables.

Montpelier and Ancestral Properties

William du Pont Sr. acquired the Montpelier estate in —originally the home of President —in 1901, establishing it as a primary family residence for the du Ponts. The property, spanning over 2,600 acres at the time, served as the childhood home for William du Pont Jr., who was born in 1896 and raised amid its expansive grounds, which included stables and hunt courses reflective of the family's equestrian interests. During the du Pont tenure, the mansion underwent expansions and redecorations in an style, incorporating elements like paneled interiors and formal gardens to suit the family's lifestyle. William du Pont Jr. maintained a deep attachment to Montpelier, influencing his management of other family holdings. In 1928, upon his father's death, he inherited Bellevue Hall, a Gothic Revival mansion built in 1855 on 287 acres near , which his father had acquired earlier. Finding the original structure uninviting, du Pont Jr. extensively remodeled it between 1928 and the early 1930s to replicate Montpelier's neoclassical facade and interior layout, transforming it into a near-identical country estate complete with added stables and fields. This redesign preserved ancestral architectural motifs while adapting the property for modern sporting pursuits, underscoring du Pont Jr.'s preference for the estate's aesthetic over Victorian Gothic elements. Other ancestral properties under du Pont Jr.'s oversight included elements tied to the family's roots, such as portions of the original Hall grounds at Bellevue, which predated du Pont ownership. These estates functioned as interconnected nodes in the family's network of breeding and operations, with Montpelier's legacy echoed in du Pont Jr.'s developments like the nearby Liseter Hall farm, also modeled after the original. The du Ponts retained Montpelier until 1984, when it passed to public stewardship following Marion du Pont Scott's bequest, but William Jr.'s replicas ensured the estate's design influenced family properties for decades.

Fair Hill and Bellevue Developments

William du Pont Jr. began acquiring land for his Fair Hill estate in 1925, assembling more than 7,600 acres along the Maryland-Pennsylvania border near Elkton, Maryland, primarily for equestrian pursuits including foxhunting and thoroughbred training. By the 1930s, he had developed the property into a major center for steeplechase racing, constructing dedicated training tracks, jumps, and a racecourse that hosted the inaugural Fair Hill Steeplechase races as part of the Cecil County Fair, which he established to promote local agriculture and equine events. The estate featured extensive facilities such as stables, paddocks, and cross-country courses tailored for conditioning racehorses, reflecting du Pont's emphasis on natural terrain for athletic development over manicured tracks. Upon his death in 1965, his heirs sold approximately 5,633 acres of the Maryland portion to the state in 1974 for $6 million, preserving much of the infrastructure for public use as the Fair Hill Natural Resources Management Area. In 1928, du Pont inherited the Bellevue Hall estate near , from his father, Sr., transforming the 184-acre Gothic Revival mansion and grounds—originally built in 1855—into a hub for his sporting interests. He expanded equestrian facilities there, including stables for thoroughbreds, a half-mile track, and meadows suited for and riding, while relocating his to the property following his 1941 divorce. These developments supported his breeding operations, with Bellevue serving as a key site for stabling and preparing horses for competition, integrated with the estate's ponds and wooded areas for varied regimens. The estate's layout emphasized functionality for du Pont's passions, contributing to his broader network of racing venues until its eventual incorporation into Bellevue State Park.

Death and Legacy

Final Years and Passing

In the years following his from Margaret Osborne du Pont on March 27, 1964, in , William du Pont Jr. resided primarily in , maintaining his long-standing role as president of the Delaware Trust Company, a position he had assumed after succeeding his father in 1929. He continued to oversee family estates and interests in , though his direct involvement in sporting activities diminished with age. Du Pont underwent surgery on December 9, 1965, at the Memorial Division of the Wilmington Medical Center. He died there on December 31, 1965, at the age of 69. He was interred in the Du Pont de Nemours Cemetery in Wilmington.

Honors and Recognitions

William du Pont Jr. was inducted into the Delaware Sports Museum and Hall of Fame in 1979, recognizing his extensive contributions to , track design, and in the state. This posthumous honor acknowledged his role as an authority on racecourse construction, including the design of Delaware Park Racetrack, and his breeding and racing of thoroughbreds, with five starters in the . In 1957, du Pont received the Laymon Honor award from the Delaware Association of Health, Physical Education and Recreation for his promotion of , including serving as president of the Delaware and funding the construction of Wilmington's first all-weather courts at Haynes Park in 1947. Additionally, his breeding program earned indirect recognition through awards to his horses, such as Parlo being named the 1940 National Champion Three-Year-Old and Berlo receiving the same honor in 1960.

Long-Term Impact and Family Succession

William du Pont Jr.'s developments in infrastructure have endured as foundational elements of the industry in the Mid-Atlantic region. He co-founded and designed Delaware Park Racetrack, which opened on June 29, 1937, in Stanton, , establishing it as a key venue for flat racing and contributing to the legalization of parimutuel wagering in the state through his advocacy for racing legislation. The track's layout, including its one-mile oval and turf course, reflected his expertise in course engineering, and it hosted significant events like the Delaware Handicap, first won by his horse Rosenna in 1937. His Fair Hill estate, assembled starting in 1925 and expanding to over 7,600 acres across and , evolved into a premier training facility with advanced features such as irrigated tracks, stables for hundreds of , and steeplechase courses. Following his death on December 31, 1965, the Maryland portion—5,633 acres—was purchased by the state in 1974 and designated as Fair Hill Training Center, which by the supports training for approximately 400 annually and hosts events like the Maryland 5 Star International horse trials. These facilities have sustained high-quality horse preparation and competition, influencing training standards and economic activity in , long after private ownership. In terms of family succession, du Pont's four children with his second wife, Jean Liseter Austin—Jean Ellen (born 1923), Evelyn Rebecca (born 1926), Henry Éleuthère Irénée, and William Kemble III (born 1935)—did not collectively extend his equestrian breeding or endeavors on a comparable scale. His son William III inherited aspects of the family fortune but shifted focus away from pursuits; William III's own son, John Eleuthère du Pont, repurposed the Farm for wrestling training, culminating in its sale after legal troubles unrelated to racing. Properties like Bellevue Hall transitioned to public or institutional use, such as a museum, rather than remaining active breeding operations. Thus, du Pont's legacy persisted primarily through publicly managed rather than direct familial continuity in the sport.

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  23. https://time.com/archive/6820218/sport-at-pimlico/
  24. http://www.americanclassicpedigrees.com/rosemont.html
  25. https://www.theracingbiz.com/2022/07/28/backtracks-rosemont-giant-killer/
  26. https://fairhillfoundation.org/history/
  27. https://www.facebook.com/FairHillFoundation/videos/william-du-pont-jrs-dauber-wins-the-1938-preakness-stakes/950949471984676/
  28. https://www.americanclassicpedigrees.com/dauber.html
  29. https://www.iroquoissteeplechase.org/history
  30. https://fairhillfoundation.org/steeplechasing/
  31. https://www.maryland5star.us/history-of-fair-hill/
  32. https://delawaretoday.com/life-style/a-history-of-jump-racing/
  33. https://www.abebooks.com/book-search/author/halpin-warren-t-intro-to-polo-by-stewart-b-inglehart-intro-to-hunting-by-henry-g-vaughan-intro-to-steeplechasing-by-william-du-pont-jr/
  34. https://mhhna.org/wp-content/uploads/2021/11/2017_MHHNA_honored-huntsmen.pdf
  35. https://equiery.com/fair-hill-from-foxhunter-paradise-to-international-equestrian-center/
  36. https://fairhillinternational.org/history/
  37. https://www.americasbestracing.net/tracks/delaware-park
  38. https://fairhillfoundation.org/first-gallop-takes-place-on-new-turf-course-at-fair-hill/
  39. https://www.newarklifemagazine.com/2021/10/08/371295/flying-without-wings
  40. https://digital.hagley.org/2317_2_0171
  41. https://www.montpelierraces.org/our-story
  42. https://www.hmdb.org/m.asp?m=240848
  43. https://americanaristocracy.com/houses/bellevue-hall
  44. https://news.maryland.gov/dnr/2017/09/22/a-four-star-is-born/
  45. https://dnr.maryland.gov/publiclands/pages/central/fairhill.aspx
  46. https://thequoinhotel.com/bellevue-state-park
  47. https://www.nytimes.com/1964/04/07/archives/mrs-margaret-o-du-pont-gets-a-divorce-in-nevada.html
  48. https://www.nytimes.com/1966/01/01/archives/william-du-pont-of-wilmington-banker-and-sportsman-69-dies-head-of.html
  49. https://www.theracingbiz.com/2023/07/05/delaware-handicap-has-had-major-impact-on-racing-history/
  50. https://fairhillfoundation.org/the-fair-hill-training-center-a-history/
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