[1] Bahram was a nephew of a Nizari Isma'ili leader named Abu Ibrahim Asadabadi who was executed in Baghdad in midst of the massacres ordered by Seljuk sultan Barkiyaruq in 1101.
[1] According to Ibn al-Qalanisi, the main source of Isma'ili presence in Damascus, Bahram started his career as a propagandist throughout of Syria, living in secrecy.
At this time in 1125, Damascus was under threats of the Frankish Crusaders under Baldwin II of Jerusalem, and Isma'ilis from Homs and elsewhere had joined Toghtekin's troops in the Battle of Marj al-Saffar against the Franks in 1126.
Abu Ali Tahir ibn Sa'id al-Mazadaqani (المزدقاني), the chief vizier of Toghtekin, was partial to the Nizaris, and persuaded Toghtekin to give a Mission House (dar al-da'wah) in Damascus and the frontier stronghold of Banias to Bahram, who refortified the stronghold and made it his base, performing extensive raids from there and possibly capturing more places.
[7][1] Bahram was killed in action in Wadi al-Taym on the western slopes of Mount Hermon while fighting local tribes in 1128.