Constantine III of Abkhazia

In 904 he had finally annexed a significant portion of Kartli, bringing his borders close to the Arab-controlled Tiflis (modern-day Tbilisi).

The two men collaborated in defeating Constantine III, their common relative, who competed with Adarnase for hegemony in Inner Iberia and with Smbat in Gugark.

In 912, when Emir Yusuf ibn Abi'l-Saj invaded Armenia, Smbat attempted to take refuge in Abkhazia, but Adarnase did not let him cross his territories and was eventually captured and hanged at Dvin (914).

Adarnase was relegated to his portion of the Bagratid hereditary lands in Tao[1] and was forced to recognize himself as a vassal of Constantine III.

The allies invaded Hereti (principality in the Georgian-Albanian marchlands) and divided its major strongholds.