Vyner Brooke was the 3rd Rajah of Sarawak, after James (founder) and Charles.
It was during Vyner's rule that his private secretary, Gerard MacBryan, a Muslim convert envisioned of re-creation of a great Muslim empire under one khalifah the likes of the Umayad, Abbasid, Andalusia, Ayyubid, and Ottoman.
Gerard went for Haj whose hazardous account is found in Triumphant Pilgrimage. Where to get a copy of the book? Whatever happened to his lineage if any?