Kabungsuwan probably knew some Arabic, but he necessarily spoke and used the Malay language, his mother's tongue. The incidents connected with his departure from Juhur are of considerable historical interest. No dates have been obtained relative to this departure. The early Moros never dated their events or documents. Their narratives were very brief and crude. When they dated their events or wars they used a cycle of eight years, and designated its years by the letters A, H, J, Z, D', B, W, D''. Whenever one cycle ended they began another without any relation or reference to the corresponding Mohammedan year. The earliest date that has been obtained which has immediate bearing on Mindanao history is that Bwisan, the father of the Corralat of Combés, was living in 1597; the next date was that of Corralat's defeat by General Corcuera in 1636. Bwisan had two older brothers, and he was probably preceded in the sultanate by both of them. His father, Bangkaya, was the son of Makaalang, the son of Kabungsuwan. It will therefore be within safe limits to say that Kabungsuwan's departure from Juhur or his arrival in Mindanao occurred about the end of the fifteenth or the beginning of the sixteenth century. Captain Forest, who visited Magindanao in 1775, placed that event roughly at A. D. 1475, which is near enough to assume as correct. Tarsila No. II states that there departed with Sharif Kabungsuwan from Juhur many people who were dispersed by the storm and ultimately found their way to different ports. The places to which they went were Balimbang, Bangjar, Kuran, Tampasuk, Bruney, Sandakan, Sulu, Malabang, Tubuk, and Mindanao. There is no doubt that this statement refers to an emigration from Juhur east as far as Mindanao, and that with this emigration came Kabungsuwan. The Samal people generally believe that they came from Juhur and its neighborhood. The traditions of Magindanao distinctly state that the people who came with Kabungsuwan were Samals. The Samals or Bajaws are the sea nomads of the Malay Archipelago and their emigrations are frequent. The Samals of the Sulu Archipelago are ruled by the Sulu datus and are generally very submissive. They are allowed to live on Sulu soil, but they have never made themselves independent anywhere. Indeed, all the evidence that can be obtained seems to point distinctly to the fact that they are of late arrival and do not belong to the older peoples of the Philippine Islands.