These snippets of history are extracted from the Song of Namwaran:
Rajah Mangawarna was vouchsafed a secret oracle by a diwata, who foretold that one of his descendants would do mankind a great good if he were to sail south until he saw a sign foretelling that future.
When he encamped on the island of Bannang, Mangawarna saw a monkey, the leader of its troop, battling and defeating a monitor lizard twice its size. Believing this was the sign, he settled on Bannang. His descendant Rajah Indarapatra would later conquer the Busaw giants, just as the monkey had conquered the monitor lizard.