The Sultan of Indragiri Sumatera this picture was kpet for very long time was said to have been related to my Grand father .
My late grandfather came from sumatera Indragiri, although he came from Royal blood he was always humble and refuse to let anyone know his true background. Few days ago my friends actually saw a documentary regarding about the Royal household of Sumatera which was link to my late grandfather. He use to kept a Keris covered with yellow cloth but he burried it somewhere near our old house where we use to stay. Maybe he doesn't want anyone to know.
He is also has a very strong religious background so it is not surprised if he was supposed to be someone very important in the past.