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 I, Duke of Cieszyn The Obituary of the Church of St. Vincent in Wrocław showed the existence of a certain "Grzymisława, Duchess of Opole" ("Grimizlaua ducissa Opuliensis") who was buried there around 13 September 1286. Her parentage is also unknown, but her name suggests a Russian origin, probably member of the Rurikids. Her title suggests that she may have been the wife of Mieszko I or the first wife of Bolko I (Mieszko I's brother), or maybe a completely different person. Also, the exact date of their marriage was uncertain, but after a further reconstructions of their children's birth dates, was placed between 1275