Mieszko Bolesławowic 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 Mieszko 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 Mieszko was prince of Cracow. However, sometime during this time he accepted over-lordship of his uncle Wladyslaw I Herman, and gave up his hereditary claim to the crown of Poland in exchange for
Mieszko I of Poland situation at that time. Another debatable point is Thietmar's claim that Mieszko "subordinated himself to the King". Most historians believe that it was only a matter of recognition of Otto's royal authority. Some suggest that a fealty relationship could in fact be involved. Whether or not the German-Polish invasion of Bohemia actually happened, the friendly relations between the Czechs and the Poles came to an end. Bohemia resumed its earlier alliance with the Lutici, which caused in 990 a war with Mieszko, who was supported by Empress Theophanu. Duke Boleslav II was probably the first one to attack. As a