Peter II

He and his brother Peter II were founders of the Asen dynasty, which survived until the latter half of the 13th century.

…1185 the brothers Ivan and Peter Asen of Tŭrnovo launched a revolt to throw off Byzantine sovereignty. The Asen brothers defeated the Byzantines and forced Constantinople to recognize Bulgarian independence. Their brother and successor, Kaloyan (reigned 1197–1207), briefly accepted the supremacy of Rome in church affairs and received a royal…