They were a branch of Uqaylids who re-migrated to Arabia after the fall of their rule in Syria.

[2] The Usfurids were initially allies of the Qarmatians and their successors, the Uyunids, but eventually overthrew the latter and seized power themselves.

[3] The Usfurids' takeover came after Uyunid power had been weakened by invasion in 1235 by the Salghurid Atabeg of Fars.

According to Arab sources, in 1354 the Arabian forces from the Usfurids invaded Basra and defeated the Mongols where they inflicted heavy losses on them.

[6] However, Sheikh Hassan al-Jalairi the Great, who succeeded the Mongols in ruling Iraq and was himself a Mongol sought help from Prince Fawaz bin Muhanna, the leader of the Ta’is Tribe, and Sheikh Hassan al-Jalairi the Great, who was able to repel the invaders, defeating them and killing a large number of the Usfurid forces.