Duke Oldřich of Bohemia deposes and blinds his brother Jaromír, who flees to Poland.[citation needed]

Oldřich, a member of the Přemyslid dynasty, was Duke of Bohemia from 1012 to 1033 and briefly again in 1034. His accession to the Bohemian throne marked the start of a phase of stability after a long period of internal dynastic struggles. Under his rule, the Moravian lands were reconquered from Polish occupation.

Jaromír, a member of the Přemyslid dynasty, was Duke of Bohemia in 1003, from 1004 to 1012, and again from 1034 to 1035.

Greater Poland, often known by its Polish name Wielkopolska, is a Polish historical region of west-central Poland. Its chief and largest city is Poznań followed by Kalisz, the oldest city in Poland.