The rule of Bwayan extends all the way from the head of the delta or from the Kakal (canal) to Bagu-Ingŭd, which is a few miles below Piket. In fact the datus of the surrounding country, all through the upper valley of the Rio Grande, owed more or less allegiance to the rulers of Bwayan through all ages.

The sultan of Bwayan is known as Raja Bwayan. The rajas of Bwayan attained a distinction and a power second to none, except that of the sultan of Magindanao. The greatest datus of Bwayan who have figured prominently in the recent history of the country are Datu Ūtū and Datu Ali of Tinunkup, both of whom will be referred to later.

Diagram No. 1 ends with Sultan Sakandar. The relation between him and Sultan Maytŭm, the next raja of Bwayan, is not given in the records. The second diagram begins with Sultan Maytŭm and ends with the present generation of rulers.

Part II

Diagrams Nos. 1 and 2 show plainly that the sultanate of Bwayan did not follow any direct line of succession, that the rajas of Bwayan did not always stay at Bwayan, and that Bwayan was not the only capital of the sultanate. The datus and the sultans of the neighboring datuships who married the principal princesses of Bwayan seem to have assumed the title of Raja Bwayan also.

The order of succession was a very complicated one. It is not stated in the records nor can it be exactly inferred from the genealogies kept. Sharif Ali of Sapakan gives the following order:

Sharif Afdal of Dulawān gives the following order:

These two orders represent the best opinions of the Saraya or upper valley, but there is no doubt that both of them are wrong. The order of Sharif Ali is, generally speaking, nearer the truth. From an examination of the records the following order seems the best of all: