Ibn Saud was born on 15 January 1875 in Riyadh in the region called Najd in central Arabia. He was the son of Abdul Rahman bin Faisal, last ruler of the Emirate of Nejd, the Second Saudi State, a tribal sheikhdom centered on Riyadh. Ibn Saud's mother was a member of the Sudairi family, Sarah Al Sudairi. She died in 1910. His full-siblings were Faisal, Noura, Bazza, Haya and Saad.