Daud ibn Suleiman
Daud ibn Suleiman, son of Sultan Suleiman ibn al-Hasan of the Mahdali dynasty, was twice sultan of Kilwa. When his father was murdered in 1308, his brother al-Hasan ibn Sulaiman had already been proclaimed ruler but was away on pilgrimage in Mecca; Daud held the throne in his brother's name for two years.
He then stepped down voluntarily on his brother's return. After al-Hasan died in 1333, Daud ascended again, ruling in his own right for about twenty-four years, until around 1357.