Datu Bangkaya was a son of Sharif Maka-alang. In 1574, Guido de Lavezaris wrote to the Spanish King that the chief of the Mindanao River wanted to become a friend of the Spaniards. In another Spanish report, dated 1579, this chief is referred to as “Asulutan” (Arabic, Assultan) with the information that he was a father of Dimasangkay and that he had already died. This refers probably to Datu Bangkaya who by 1574 must have been reigning for some time, since in 1579, his son, Dimasangkay, was considered by the Spaniards to have been “an old man.” Datu Bangkaya could also have been the ruler in the Pulangi who was reported to have died in 1578.
- Majul, Cesar Adib. "Problems of Chronology". Muslims in the Philippines. Diliman, Quezon City: University of the Philippines Press, 1999.
- Maguindanao Sultanate (accessed on September 26, 2007)