Complex sentence: In 826 Sahak allied with his ancient enemy, the Qaisite emir of Manazkert, Sevada, against the governor of Caliph but he was defeated and died in Kavakert; nevertheless his son Grigor-Sufan followed him without greater problems as prince of Western Siunik.
Split into simpler sentences: In 826 Sahak allied with his ancient enemy the Qaisite emir of Manazkert, Sevada, against the governor of Caliph but he was defeated and died in Kavakert. Nevertheless his son Grigor-Sufan followed him without problems as prince of Western Siunik.