Ismail I, (July 17, 1487 – May 23, 1524), known in Persian as Shāh Ismāʿil, (Persian: شاه اسماعیل‎‎; full name: Abū l-Muzaffar Isma'il bin Haydar as-Safavī; Azerbaijani: بیرینجی شاه اسماعیل; Şah İsmayıl Xətai), was Shah of Iran (Persia) (1501) and the founder of the Safavid dynasty which survived until 1736. Isma'il started his campaign inIranian Azerbaijan in 1500 as the leader of the Safaviyya, a Twelver Shia militant religious order, and unified all of Iran by 1509.