The family is of ethnic Turkoman background and originates from Eğil, in present-day Turkey.[1][2] Their paternal ancestor is İsfendiyar Bey who was a free vassal of Aq Quyunlu's Abul-Muzaffar. In 1498, Abul-Muzaffar freed İsfendiyar Bey's Eğil from paying taxes.[2] In 1518 Selim I of the Ottomans conquered the Aq Qoyunlu's territory, including Eğil and expelled all the noble families, including İsfendiyar Bey who moved to Çankırı near Ankara, where he received a ziamet. Between 1498 and 1637 there are no records of his family. The oral tradition states that a descendant of İsfendiyar Bey, Kara Osman, arrived to Bosnia Eyalet in the 16th century. They were known after his hometown of Çankırı, first as Čangrlić and then Čengić. Kara Osman received a ziamet in the Borje, Foča. The oldest written record of the family comes from Evliya Çelebi who between 1664 and 1665 mentions a graveyard in Zagorje where ancestors of Ali Pasha Čengić were buried.[3]
Kreševljaković, Hamdija (1959). Čengići: prilog proučavanju feudalizma u Bosni i Hercegovini [The Čengićs: a contribution to the study of feudalism in Bosnia and Herzegovina] (in Serbo-Croatian). Sarajevo: Sarajevski grafički zavod.
Journals
Hadžijahić, Muhamed (1966). "Turska komponenta u etnogenezi Bosanskih muslimana". Pregled: časopis zu društvena pitanja. 18 (11–12): 485–502.