The list of rulers of Kedah as given here is based to some extent on the Kedah Annals beginning with the Hindu ruler Durbar Raja I. According to the Kedah Annals, the 9th Kedah Maharaja Derbar Raja converted to Islam and changed his name to Sultan Muzaffar Shah, thereby started the Kedah Sultanate.[6] The historicity and the dating of the list of rulers however is questionable as Kedah may have remained Hindu-Buddhist until the 15th century when its king converted to Islam.[7]