He succeeded on the death of
George VII as king in 1407 and launched a program of restoration of what had been ruined and destroyed during
Timur's invasions. Towards 1411, he allied with the
Shirvanshah Ibrahim I and the ruler of
Shaki Sidi Ahmed to counter the
Qara Qoyunlu Turkoman advance into the
Caucasus. In the decisive
Battle of Chalagan, the allies were routed and Constantine, his half-brother David and the Shirvanshah Ibrahim were taken prisoner. In the captivity, he behaved arrogantly and the infuriated Turkoman prince
Qara Yusuf ordered him, David, and 300 Georgian nobles to be executed. Qara Yusuf put Constantine to death by his own hand. ==Family==