Cagayan Sulu

Cagayan de Sulu, known to its inhabitants as Mapun, lies in the Sulu Sea near northern Borneo and Palawan. The island and its neighbouring islets are home to the Jama Mapun, a Sama-speaking people whose connections extend across nearby islands and coasts. Mapun's relationship with the Sultanate of Sulu linked it to Jolo farther east.