Chronograph of 354

The Chronograph of 354 is a compilation of chronological and calendrical texts produced in 354 AD for a wealthy Roman Christian named Valentinus by the calligrapher and illustrator Furius Dionysius Filocalus. The original illustrated manuscript is lost, but several copies have survived. It is the earliest known codex to have had full page illustrations. The work is also called the Chronography or Calendar of 354, and the name Calendar of Filocalus or Filocalian Calendar is sometimes used to describe the whole collection, and sometimes just the sixth part, which is the Calendar itself. Other versions of the names ("Philocalus", "Philocalian", "Codex-Calendar of 354", etc.) are occasionally used. The text and illustrations are available online. It has had a variety of other names over the years; the historian Theodor Mommsen titled it "Chronica urbis Romae".

Amongst other historically significant information, the work contains the earliest reference to the celebration of Christmas as an annual holiday or feast, on December 25, although unique historical dates had been mentioned much earlier by Hippolytus of Rome during 202–211.

Various partial copies or adaptations survive from the Carolingian Renaissance of the 8th–9th centuries, which were themselves copied in the Renaissance period. For example, Botticelli adapted a figure of the city of Treberis (Trier) who grasps a bound barbarian by the hair for his painting, traditionally called Pallas and the Centaur.

The most complete and faithful copies of the illustrations are the pen drawings in a 17th-century manuscript from the Barberini collection (Vatican Library, cod. Barberini lat. 2154). This was carefully copied in 1620, under the supervision of the great antiquary Nicholas-Claude Fabri de Peiresc, from the Codex Luxemburgensis, (which Peiresc had on long-term "loan"). These drawings, although twice removed from the originals, show the variety of sources that the earliest illuminators used as models for manuscript illustration, including metalwork, frescoes, and floor mosaics. The Roman originals were probably fully painted miniatures.

The copy used for the Vatican Barberini manuscript disappeared after Peiresc's death in 1637. However some folios had evidently already been lost from this Codex Luxemburgensis before Peiresc received it, since other copies include them. The suggestion of Carl Nordenfalk that the Codex Luxemburgensis copied by Peiresc was actually the Roman original has not been accepted. Peiresc himself thought the manuscript was seven or eight hundred years old when he had it, and, though Mabillon had not yet published his De re diplomatica (1681), the first systematic work of paleography, most scholars, following Meyer Schapiro, believe Peiresc would have been able to make a correct judgement on its age. For a full list of manuscripts with copies after the originals, see the external link.

Furius Dionysius Filocalus was the leading scribe or calligrapher of the period, and possibly also executed the original miniatures. His name is on the dedication page. He was also a Christian, living in a moment that lay on the cusp between a pagan and a Christian Roman Empire.

The Chronography, like all Roman calendars, is as much an almanac as a calendar; it includes various texts and lists, including elegant allegorical depictions of the months. It also includes the important Liberian Catalogue, a list of popes, and the Calendar of Filocalus, from which copies of eleven miniatures survive. Among other information, it contains the earliest reference to Christmas (see Part 12 below) and the dates of Roman Games, with their number of chariot-races.

The contents are as follows (from the Barberini Ms. unless stated). All surviving miniatures are full-page, often combined with some text in various ways: