Rashid ad-Din Sinan

Leader of the Nizari Ismaili state from 1162 to 1193

Rashid al-Din Sinan (Arabic: راشد الدين سنان Rāshid ad-Dīn Sinān; 1131/1135 – 1193), also known as the Old Man of the Mountain (Arabic: شيخ الجبل Sheikh al-Jabal; Latin: Vetulus de Montanis), was an Arab Muslim missionary (dāʿī) who served as the leader of the Nizari Ismaili state and the Order of Assassins from 1162 until his death in 1193. An adherent of Nizari Ismailism, a branch of Shia Islam, he was a prominent figure during the Crusades.

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