Isaac Komnenos Vatatzes

Isaac Komnenos Vatatzes (; died 1196) was a Byzantine aristocrat and military commander, who was the son-in-law of Emperor Alexios III Angelos and received the rank of sebastokrator. Life Isaac Komnenos Vatatzes was the youngest son of Alexios Vatatzes, a son of the general Theodore Vatatzes and the purple-born princess Eudokia Komnene, daughter of Emperor John II Komnenos, and of Maria Pegonitissa. The couple married around 1158, at the initiative of Emperor Manuel I Komnenos. In 1190, Isaac participated in a campaign against the Vlach–Bulgarian uprising of Asen and Peter in the area of the Balkan Mountains. Along with Manuel Kamytzes, he commanded the Imperial army's vanguard, while Emperor Isaac II Angelos and his brother Alexios (the future Alexios III Angelos, ) commanded the main body and the sebastokrator John Doukas was in command of the rear guard. During their retreat through a narrow pass, the Bulgarians allowed the vanguard to pass, but then fell on the rest of the army, which panicked and fled. Around the same time, he married Anna Komnene Angelina, the second daughter of Alexios Angelos. When Alexios overthrew his brother in 1195 and became emperor, Isaac, as his son-in-law, accompanied him during his coronation procession. It was probably at this point that he was promoted to the rank of sebastokrator, which was appropriate to his familial relationship to the new emperor.