House of Saud

The House of Saud (Arabic: آل سُعُود, romanized: ʾĀl Suʿūd IPA: [ʔaːl sʊʕuːd]) is the ruling royal family of Saudi Arabia. It is composed of the descendants of Muhammad bin Saud, founder of the Emirate of Diriyah, known as the First Saudi State, (1727–1818), and his brothers, though the ruling faction of the family is primarily led by the descendants of Ibn Saud, the modern founder of Saudi Arabia. It forms a subtribe of the larger prominent ancient Banu Hanifa tribe of Arabia, from which well known 7th century Arabian theologist Maslama ibn Ḥabīb originates. The most influential position of the royal family is the King of Saudi Arabia, an absolute monarch. The family in total is estimated to comprise 15,000 members; however, the majority of power, influence and wealth is possessed by a group of about 2,000 of them. Some estimates of the royal family's wealth measure their net worth at $1.4 trillion. This figure includes the market capitalization of Saudi Aramco, the state oil and gas company, and its vast assets in fossil fuel reserves, making them the wealthiest family in the world and the wealthiest in recorded history.

The House of Saud has had four phases: the Sheikhdom of Diriyah (1446–1744); the Emirate of Diriyah (1727–1818), marked by the expansion of Salafism; the Emirate of Nejd (1824–1891), marked with continuous infighting; and the current state (1902–present), which evolved into the Kingdom of Saudi Arabia in 1932 and now wields considerable influence in the Middle East. The family has had conflicts with the Ottoman Empire, the Sharif of Mecca, the Al Rashid family of Ha'il and their vassal houses in Najd along with numerous Islamist groups both inside and outside Saudi Arabia and Shia minority in Saudi Arabia.

The succession to the Saudi Arabian throne was designed to pass from one son of the first king, Ibn Saud, to another. The monarchy was hereditary by agnatic seniority until 2006, when a royal decree provided that future Saudi kings are to be elected by a committee of Saudi princes. King Salman, who reigns currently, first replaced the next crown prince, his brother Muqrin, with his nephew Muhammad bin Nayef. In 2017, Muhammad bin Nayef was replaced by Mohammed bin Salman, King Salman's son, as the crown prince after an approval by the Allegiance Council with 31 out of 34 votes. The king-appointed cabinet includes more members of the royal family.

House of Saud is a translation of ʾĀl Saud, an Arabic dynastic name formed by adding the word ʾĀl (meaning "family of" or "House of", not to be confused with Al meaning "the") to the personal name of an ancestor. In the case of the Al Saud, the ancestor is Saud bin Muhammad bin Muqrin, the father of the dynasty's 18th century founder Muhammad bin Saud (Muhammad, son of Saud).

The surname "Al Saud" is carried by any descendant of Muhammad bin Saud or his three brothers Farhan, Thunayyan, and Mishari. Al Saud's other family branches like Saud Al Kabir, the Al Jiluwi, the Al Thunayan, the Al Mishari and the Al Farhan are called cadet branches. Members of the cadet branches hold high and influential positions in government though they are not in the line of succession to the Saudi throne. Many cadet members intermarry within the Al Saud to re-establish their lineage and continue to wield influence in the government.

All male members of the royal family have the title of Emir (Prince). However, the sons and patrilineal grandsons of Kings are referred to by the style "His Royal Highness" (HRH), differing from patrilineal great-grandsons and members of cadet branches who are called "His Highness" (HH), while the reigning king uses the additional title of Custodian of the Two Holy Mosques.

The earliest recorded ancestor of the Al Saud was Mani' ibn Rabiah Al-Muraydi, who settled in Diriyah in 1446–1447 with his clan, the Mrudah. The Mrudah are believed to be descended from the Banu Hanifa branch of the larger Rabi'ah tribal confederation^{[clarification needed]}. The Banu Hanifa played an important role in shaping the Middle East and Arabia from the 6th century.

Mani' was invited to Diriyah by a relative named Ibn Dir, who was the ruler of a group of villages and estates that make up modern-day Riyadh. Mani's clan had been on a sojourn in east Arabia, near Al-Qatif, from an unknown point in time. Ibn Dir handed Mani two estates, called al-Mulaybeed and Ghusayba. Mani and his family settled and renamed the region Al Diriyah after their benefactor Ibn Dir.