Bangkaya succeeded Maka-alang and married three wives, daughters of the principal chiefs of Slangan, Magindanao, and Matampay, by each one of whom he begot a son. His sons were Dimasangkay, Gugu Sarikula, and Kapitan Lawut Bwisan, all of whom become datus and succeeded to the rule of Magindanao in order. Sarikula married a Sulu princess called Raja Putri, who was supposed to be the noblest lady of her day in Magindanao and who probably was the daughter of the sultan of Sulu. The word Putri is equivalent to "princess," and Raja Putri means "royal princess." Kapitan means "holder" or "leader." Lawut is a Malay word meaning "sea." Bwis means "tax." Kapitan Lawut Bwisan distinguished himself more than his predecessors and was the most powerful enemy Spain encountered in the south in her first effort to reduce the Moro land. In 1597, in company with Silungan, the raja of Bwayan, he checked the invasion of Marquis Rodriguez and defeated him at Tampakan. Bwisan was succeeded by his son, Sultan Dipatwan Qudrat, the Corralat of Combés. The word Dipatwan is Malay in origin and means "master" or "sir." The word qudrat is Arabic and means "power." The letters d and r and r and l are interchangeable in Moro, and the word qudrat is commonly pronounced kudlat or kurlat; hence the corrupted form "Corralat." Sultan Qudrat overshadowed his father, Bwisan, and ruled with a strong hand. He was probably the strongest and greatest Mindanao sultan that ever lived. He fought the Spaniards bitterly and held their sovereignty in check for many years. His pirates terrorized Luzon and the Visayas and controlled the southern seas for a long time. In 1636 General Corcuera led an expedition against him and after considerable difficulty reduced his fort and defeated his forces. Qudrat appears to have had a large number of firearms, and his fort was very strongly fortified. The Spaniards captured 8 bronze cannons, 27 lantaka or culverins, and 100 muskets. In 1645 his relations with Spain had undergone a distinct change. He had become more powerful, but he was desirous of peace and made a treaty with the Spanish Government. This treaty was in the nature of an alliance for mutual aid and protection. It secured better commercial facilities and gave the Jesuits the privilege of building a church in the sultan's capital. Thirteen years later hostilities were renewed and another campaign was directed against Simway. This time Qudrat succeeded in blocking the river at different places and successfully checked the invasion. Qudrat was followed by his son, Dundang Tidulay, of whom very little is known. Sultan Dundang Tidulay begot Sultan Mohammed sa-Barahaman and Sultan Mohammed Kaharu-d-Din Kuda. Barahaman ruled peacefully and begot several children, two of whom, Japar Sadik Manamir and Dipatwan Anwar, became sultans.