While "sultan" is often Employed in Islamic contexts, the person ruler's adherence to Islam may possibly change. Sultanate of Zanzibar: two incumbents (with the Omani dynasty) since the de facto separation from Oman in 1806, the last assumed the title Sultan in 1861 in the official separation under British auspices;[citation https://matthewv753scl3.newsbloger.com/profile