Кой се ожени Кажимеж II Справедливи?

Кажимеж II Справедливи (на полски: Kazimierz II Sprawiedliwy) от династията на Пястите е княз на Полша през XII век.

Helena of Znojmo (Czech: Helena Znojemská; Polish: Helena znojemska; c. 1141–1202/1206), was a Bohemian princess, a member of the Přemyslid dynasty. She was the daughter of Duke Conrad II of Znojmo and his Serbian wife Maria (daughter of Uroš I). Helena was probably named after her maternal aunt, Queen Helena of Hungary, wife of King Béla II.

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.