The latter ruled Keserwan until his death without children in 1523, after which he was succeeded by Hasan's son Mansur. Mansur had a long reign and was accorded by the Ottomans numerous districts in Mount Lebanon and its environs as tax farms. He eliminated many of his Sunni rivals, and his local power relied on a Maronite Christian support base and his Maronite agents, namely members of the Hubaysh clan, who served as a check on the Shia Muslim sheikhs of Keserwan.