1145 to Conrad II of Znojmo (c1094-aft1161) and Maria of Serbia (?-aft1189) and died circa 1204 of unspecified causes. She married Casimir II the Just of Poland (1138-1194) circa 1163 JL . Notable ancestors include Charlemagne (747-814), Alfred the Great (849-899). Ancestors are from France, Germany, Belgium, the United Kingdom.Helena Přemyslid of Znojmo was born
Common ancestors of Helena of Znojmo (1145-c1204) and Casimir II the Just of Poland (1138-1194)
- Bretislaus I of Bohemia (c1003-1055)
- Gerberga von der Wetterau (c960-1036)
- Heinrich I von Schweinfurt (975-1017)
- Judith von Schweinfurt (?-1058)
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