 Emperor Manuel unexpectedly invaded Cilicia, forcing Thoros II to seek refuge in the mountains in December 1158. Raynald hurried to Mamistra to voluntarily make his submission to the emperor. On Manuel's demand, he and his retainers walked barefoot and bareheaded through the streets of the town to the imperial tent where he prostrated himself, begging for mercy. William of Tyre stated that "the glory of the Latin world was put to shame" on this occasion, because envoys from the nearby Muslim and Christian rulers were also present at Raynald's humiliation. Manuel only forgave him after Raynald agreed to accept a Greek Patriarch in Antioch. Raynald also had to promise that he would allow a Byzantine garrison to stay in the citadel whenever it was required and would send a troop to fight in the Byzantine army. Before long, Baldwin III of Jerusalem persuaded Manuel to consent to the return of the Latin patriarch, Aimery, to Antioch, instead of installing a Greek patriarch. When the emperor entered Antioch with much pomp and ceremony on 12 April 1159, Reginald held the bridle of Manuel's horse. Manuel left the town eight days later.
