Leo I, Prince of Armenia allied with the Danishmend Emir Gazi Gümüshtigin against him, and Bohemond's army was lured into an ambush in February 1130 near Mamistra.
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Cyril Mango in Deux études sur Byzance et la Perse Sassanide (1985) speculated they were descendants of Heraclius of Edessa, a general under Leo I and Zeno.
They brought these claims to Prince Levon I of Armenia many times until he relented and had Gregory imprisoned in his palace at Hromgla.