Hassan Sabbah Ruller of Alamut

Hassan-e Sabbāh (circa 1034-1124) was a Nizārī Ismā‘īlī missionary who converted a community in the late 11th century in the heart of the Alborz Mountains of northern Persia. He later seized a mountain fortress called Alamut. He founded a group of fedayeen whose members are often referred to as the Hashshashin, or "Assassins".