In 1261, the Abbasid dynasty was re-established by a cadet branch of the dynasty at
Cairo under the auspices of the local
Mamluk sultans, but these caliphs were purely religious and symbolic figures, while temporal power rested with the Mamluks. The revived caliphate in Cairo lasted until the
Ottoman conquest of Egypt in 1517, after which the caliphal title passed to the
Ottoman dynasty. The Cairo Abbasids were largely ceremonial caliphs under the patronage of the Mamluk Sultanate that existed after the takeover of the
Ayyubid dynasty. ==Genealogy==