Battle of Pantina
It was part of a war of succession within Serbia , in which the Byzantines intervened on behalf of the deposed Grand Prince Tihomir of Serbia against his rebellious younger brother , Prince Nemanja , who emerged victorious and was crowned afterwards . 
<triplet> Tihomir of Serbia <subj> Nemanja <obj> sibling <triplet> Nemanja <subj> Tihomir of Serbia <obj> sibling