伊萨克二世
The Byzantines attacked Serbia in 1191, raiding the banks of South Morava. Nemanja had a tactical advantage, and began to raid the Byzantine armies. Isaac II Angelos summoned a peace treaty, and the marriage of Nemanja's son Stefan to Eudokia Angelina, the niece of Isaac II, was confirmed. Stefan Nemanjić received the title of "sebastokrator".