Sargis fell back to the rebel king David 's headquarters in Atsquri .
Sargis succeeded in beating off Arghun 's attack on Sargis ' patrimonial fortress of Tsikhisjvari in May 1261 .
Sargis fell back to the rebel king David 's headquarters in Atsquri , but he succeeded in beating off Arghun 's attack on his patrimonial fortress of Tsikhisjvari in May 1261 .