Oveissi’s family from his father’s lineage goes back to Shah Qara Yusuf Muhammad, the ruler of the Ghara Ghoyonlu dynasty (Black Seep Turkomans) and descends through Uzun Hassan when he defeated Jahan Shah in a battle near the sanjak of Çapakçur in present-day eastern Turkey on 30 October[6] (or 11 November) 1467, resulting in a merger of the Kara Koyunlu and the Ag Qoyunlu.