The Bayandurids[1] or the Tur-'Alids[2] ruled over the Aq Qoyunlu confederation, that was founded by Tur Ali bin Pehlwan (1340-1360 C.E.
and his grandson Uthman Beg respectively, the founder of Aq Qoyunlu state.
The dynasty originated around Diyarbakır and ruled the territory now part of present-day Turkey, Iraq and Iran.
They gained international significance under Uzun Hasan who became their greatest leader.
He conquered the Qara Qoyunlu and defeated the Timurid Empire, thus adding significant portions of Iran to his kingdom.