Who dated Oldřich, Duke of Bohemia?

Oldřich I (Latin: Odalricus, Udalrichus; German: Odalric, Udalrich; c. 975 – 9 November 1034), 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.