I am onto another trail. Andre P Brink, one of our country's writers has written a novel dealing with the Slave upheaval in which the Ontong guy was involved in. This novel was based in an actual report that was written, which he modified to suit his writing. I do think all these leads are important as it will lead to the next link and the next etc. if anyone is interested to follow the link as well the book is called: Writing in a state of siege. There is not the actual mention, but it is said to have been that particular revolt.
Also on the web I stumbled across the meaning of "ontong" in Bonjang – a mystical Eastern language. It means..........kidney. Teehee.