Hassan-i Sabbah

Timeline

1. c. 1050–1080Qom · Qom ProvinceBorn near Qom, he received religious education in his youth, later converted to Ismailism, preached across Persia and established sectarian networks, gradually becoming a central figure of the Nizari branch.
2. 1090–1092Alamut · Qazvin ProvinceIn 1090 he led his followers to capture the Alamut fortress, establishing an independent religious stronghold. He then expanded to surrounding fortresses, confronting the Seljuk authorities and planning targeted killings against political enemies.
3. 1093–1124Alamut · IranHe held Alamut for many years, perfecting the fortress system and the "Fida'i" organization. The assassination of Nizam al-Mulk in 1092 was linked to his sect, and the religious state continued under his successors after his death until it was destroyed by the Mongols in the 13th century.