Sarah binti Salleh Ab. Rahaman is the wife of the Crown Prince of Brunei, Al-Muhtadee Billah and born as the daughter of a distant member of the royal family. While attending a pre-university course at 17, she married the Crown Prince. The couple have four children.

Al-Muhtadee Billah ibni Hassanal Bolkiah is the eldest son of Sultan Hassanal Bolkiah and his wife Queen Saleha. He is the Crown Prince of Brunei Darussalam, and is first in the line of succession to the Bruneian throne.