Saiful Rijal of Brunei

Saiful Rijal (also Saiful Rehal, Saiful Rizal) was the seventh Sultan of Brunei. He ruled from 1533, from the abdication of his uncle, until his death in 1581. During his reign, the Castille War broke out in 1578. He was succeeded by his eldest son Shah Berunai. The Sultan was also known as Lixar and Sultan Nula Alan by the Spaniards.

The earliest historical record of the Sultans of Brunei is not clearly known due to the poor early documentation of Brunei's history. Many elder members of the House of Bolkiah claim that their ancestors were the BaHassan and BaAlawi Saadah from Tarim and Hadhramaut in Yemen. In addition there has been an effort to Islamise the history, with the "official history" not matching up with verifiable foreign sources. The Batu Tarsilah, the genealogical record of the kings of Brunei, was not established until 1807 CE.