| Helen of Znojmo | |
|---|---|
 | |
| High Duchess consort of Poland | |
| Reign | 1177–1194 |
| Born | 1141? |
| Died | 1202/1206 |
| Spouse | Casimir II the Just |
| Issue Detail | Maria, Grand Princess of Kiev Leszek the White Konrad I of Masovia |
| House | Přemyslid |
| Father | Conrad II of Znojmo |
| Mother | Marija of Rascia |
Helena of Znojmo (Czech: Helena Znojemská; Polish: Helena znojemska; c. 1141[1]–1202/1206[2]), was a Bohemian princess, a member of the Přemyslid dynasty. She was the daughter of Duke Conrad II of Znojmo and his Serbian wife Marija of Rascia (daughter of Uroš I). Helena was probably named after her maternal aunt, Queen Helena of Hungary, wife of King Béla II.[3]
Born as princess of the Znojmo Appanage (named after its centre, the town of Znojmo in southern Moravia), she later became by marriage Duchess of Sandomierz (1173-1194), Grand Duchess of Kraków and the Seniorate Province (1177-1194), Duchess of Masovia (1186–1194), and Duchess-regent of Kraków and the Seniorate Province, Sandomierz, and Masovia on behalf of her minor sons from 1194–1198, then the latter two duchies plus Kuyavia until 1199/1200.
- ^ This date is preferred by Czech historiography; Polish historians promote the year 1145
- ^ Jasiński K. (2004). Rodowód pierwszych Piastów. Poznań: Wydawnictwo PTPN. pp. 266–268. ISBN 83-7063-409-5.
- ^ According to Jan Długosz, Helen was a daughter of Rostislav Mstislavich, Grand Prince of Kiev. He erroneously deduced her parentage on the basis of her Russian-sounding name. This was corrected by more recent historiography.