David IV of Georgia

David IV, called the Builder (1073–1125), became king of Georgia in 1089 when his father George II abdicated. He reformed the army and administration, settling Kipchak families to supply troops, and retook Samshvilde and Rustavi from the Seljuk Turks.

In 1121 he routed a vast Muslim coalition at the Battle of Didgori, and in 1122 captured Tbilisi, ending its emirate of nearly five centuries. He opened Georgia's Golden Age and was canonized by the Georgian Orthodox Church.