Peter (Theodor-Peter) II Asen

1st Emperor (Tsar) of Bulgarian Empire (later co-ruled with brother Ivan Asen). Birth date of 1164 approx (elder brother to Ivan). Ivan Asen and Peter (who was still known as Theodor at that time) went to see the Byzantine emperor, Isaac II Angelos, in Thrace in 1185, to demand an estate in the Balkan Mountains. After the Emperor had refused them, the brothers persuaded their compatriots to rise up against the Byzantine Empire. Peter was crowned Emperor before the end of the year. After Isaac II defeated them in early 1186, Ivan Asen and Peter fled over the Danube, but they returned in the autumn, accompanied by Cuman reinforcements. They captured Paristrion and began pillaging the nearby Byzantine territories. Ivan Asen became Peter's co-ruler in 1187 or 1188. Peter made a peace with the Byzantines, but Ivan Asen continued the fight. They divided their realm, with Ivan Asen receiving Tarnovo and its region. Ivan Asen made a series of raids against Byzantine territories and expanded his rule over the lands along the Struma River in the early 1190s. Peter was murdered the year after Ivan Asen in 1197. He was "run through by the sword of one of his countrymen", according to Choniates' record. Source : Wikipedia. C.Smith