 It was during these heady days of conquest that the names of two notables or "Orang Kayas" (Rich Men) were first made known.The first of these two, Orang Kaya Pukan (Ungkaya Pukan), a Yakan chieftain, ruled and reigned over the relatively untouched, rich southeastern slopes of the island.He held fast against incessant attacks from Datu Kalun's forces for a few years, resisting surrender at a high cost in the lives of his sturdy warriors.