6. Jolanta Helena (Iolanthe Helen) * c.1330 + 1403
The daughter of Kazimierz I and Eufemia of Mazovia. Some time after 1340 she entered the convent of St. Clare in Cracow. In 1361 after completing her preparations for the monastic life she became the prioress of the Cracow convent, which position she retained until her death in 1403.
(K. Jasiński, Rodowód, pp. 137-138, K. Kantak, Franciszkanie, p. 247)