Mieszko Bolesławowic I Herman. 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 Mieszko and treated him like a son. Following the death of his father in 1081, Mieszko 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. Chronicler Gallus Anonymus simply states that Mieszko was peacefully summoned to Poland by his uncle Władysław I Herman. It is likely that this
Mieszko Kazimierzowic "Gesta principum Polonorum" written in the early 12th century, put Mieszko third in order, among his brother. Modern historian, Janusz Bieniak, has supposed that Mieszko was the second son of Casimir I and was older than Władysław Herman, but most scholars disagree with this hypothesis. The date of Mieszko's birth was given by "Rocznik krakowski" (Kraków Annals). This source omitted dates of birth of Mieszko's brothers. Kazimierz Jasiński thought that "Rocznik" was started shortly before Mieszko's birth and this was the reason for absence of his older brothers. Przemysław Wiszewski supposed tha Casimir I chose Mieszko as his successor and