Q:Facts: - death place: sava banks - title: archon -lrb- -rrb- - succession: prince of serbia - caption: illustration - reign: 927 -- 960 b - successor: possibly tihomir c - death date: 960 b - predecessor: zaharija - house: vlastimirovic dynasty - father: klonimir - birth date: before 896 - name: Caslav - image: Caslav crop.jpg - birth place: preslav , bulgaria - religion: eastern christianity Based on these bullet points, write a short biography describing the life of Caslav .
A:
Caslav -lrb- , ; 890s -- 960 -rrb- was prince of the serbs from 927 until his death in 960 .he significantly expanded the serbian principality when he managed to unite several slavic tribes , stretching his realm over the shores of the adriatic sea , the sava river and the morava valley .he successfully fought off the magyars , who had crossed the carpathians and ravaged central europe , when they invaded bosnia .Caslav is remembered , alongside his predecessor vlastimir , as founders of serbia in the middle ages .Caslav was the son of klonimir , a son of strojimir who ruled as co-prince in 851 -- 880 .he belongs to the first serbian dynasty , the vlastimirovics -lrb- ruling since the early 7th century -rrb- , and is the last known ruler of the family .