 In Carchemish, Kuzi-Teshub succeeded his father in office, probably first as viceroy, according to royal seal impressions found at Lidar Höyük in 1985 on the east bank of the Euphrates river.Kuzi-Teshub then styled himself as Great King of Carchemish, suggesting that the central Hittite dynasty at Hattusa had collapsed by this time and that he viewed himself as the legitimate heir of the line of Suppiluliuma I. Kuzi-Teshub is also styled as Great King in later inscriptions from Melid.The next known Great King of Carchemish was Ir-Teshub.