 Luitpold ruled over southern Moravia as diarch in Znojmo for 20 years, once interrupted by the illegitimate regency of Duke Bretislav II in 1099-1100, when he and Ulrich were evicted.Both fell out with Bretislav when the duke tried to enforce the succession of his younger brother Bořivoj.He had Ulrich captured and arrested in Kladsko, while Luitpold fought against the forces of Bořivoj's father-in-law, the Babenberg margrave Leopold II of Austria.