Isma'il. In this, the caliph would have some success, as the Iranian communities returned to the Fatimid allegiance, enriching the official Isma'ili doctrine with their intellectual vigor; the Qarmatians of Bahrayn, however, refused to accept the Fatimids as legitimate imams. Genealogy See also List of Ismaili imams List of Mahdi claimants References Notes Sources 10th-century Fatimid caliphs 874 births 934 deaths Ismaili imams Syrian Ismailis 9th-century Ismailis Self-declared mahdi People from Khuzestan Province City founders