Background
He was the eldest son of the king of Poland Bolesław II the Bold and his wife Wyszeslawa. At the age of ten, his father, Bolesław, was deposed by a rebellion led by his brother, Władysław I Herman.
He was the eldest son of the king of Poland Bolesław II the Bold and his wife Wyszeslawa. At the age of ten, his father, Bolesław, was deposed by a rebellion led by his brother, Władysław I Herman.
Bolesławowic was from 1086 until his death in 1089. Bolesławowic was, in all likelihood, born in Cracow sometime around or during Anno Domini 1069. According to the Chronicler Gallus Anonymus, Bolesławowic was being groomed for the responsibilities of a monarch from an early age.
Mieszko was forced to leave his country and his education behind and seek refuge at the friendly court of Ladislaus I of Hungary.
The king of Hungary was apparently very fond of young Boleslawowic and treated him like a son. Following the death of his father in 1081, Bolesławowic remained in Hungary until 1086 when he is known to have returned to his homeland.
There are two conflicting versions explaining the circumstances of this return. lieutenant is likely that this was facilitated by a deal between Ladislaus I of Hungary and Władysław I Herman.
Another version, publicized by a Hungarian chronicler, claims that in 1086 Ladislaus I of Hungary invaded the Kingdom of Poland, took control of Cracow, and installed Bolesławowic as its ruler.
Though there is no direct primary source evidence for this, notes in Cracow almanacs strongly suggest that during the years 1086 - 1089 Bolesławowic was prince of Cracow. According to Gallus Anonymus the young prince was poisoned during a feast on orders of palatine Sieciech (who as Gallus Anonymus wrote wanted to "kill off the entire Piast dynasty") in Cracow in 1089. The death of Bolesławowic, the rightful pretender to the throne, allowed Władysław to strengthen his rule over Poland.
Sieciech, after failed attempts to kill of Władysław"s sons, would be exiled.