Yolanda of Poland (b. 1235)
Yolanda of Poland or Yolanda of Hungary, also Blessed Yolanda (also known as Helen; 1235 – 11 June 1298) was the daughter of King Béla IV of Hungary and Maria Laskarina. She was the sister of Margaret of Hungary and Kinga of Poland (Cunegunda). One of her paternal aunts was the Franciscan Elizabeth of Hungary.