Overview
Violant or Violante of Aragon, also known as Yolanda of Aragon (8 June 1236 – 1301), was Queen consort of Castile and León from 1252 to 1284 as the wife of King Alfonso X of Castile.
Life
Violant was born in Zaragoza, the daughter of King James I of Aragon (1213–1276) and his second wife, Yolande of Hungary (ca.1215-1253). Her maternal grandparents were Andrew II of Hungary and Yolanda de Courtenay.
In January 1249, Violant married King Alfonso X of Castile at Burgos, who before his marriage, had a romantic relationship with Mayor Guillén de Guzmán who bore to him an illegitimate daughter Beatrice.
Due to Violant's young age, she was unable to get pregnant for several years. Alfonso came to believe that his wife was barren and came to even consider the possibility of asking the pope for an annulment of the marriage.
From Wikipedia (CC BY-SA 4.0).