Abdallah bin Muhammad bin Saud was born in 1725, in Dar'iyyah, the youngest son of the Amir Muhammad bin Saud bin Muhammad who is regarded as the founder of the First Saudi State. Leadership of the family passed from his older brother Abd al-Aziz, to a nephew and finally to two grand-nephews before being reclaimed by Abdallah's descendants. Abdallah played a prominent part in the military campaigns of his father and brother, notably in the subjugation of the provinces of Sudair, Washm and al-Kharj. His main claim to fame, however, is that he was the father of Turki, from whom all subsequent Heads of the House of Saud trace their descent. Abdallah died in 1812.
