[2] In January 1249, Violant married King Alfonso X of Castile at Burgos,[1] who before his marriage, had a romantic relationship with Mayor Guillén de Guzmán who bore to him an illegitimate daughter Beatrice.

Alicante was recaptured by the Crown of Castile and the King and Queen rested in a farm located in the fields near the city, and there she became pregnant; the King decided to call the place "Pla del Bon Repos" ("Plain of good sleep"), a name that has been left to posterity and today is a suburb of Alicante.

During the reign of her son Sancho IV, and the latter's son, Ferdinand IV of Castile, Queen Violant lived almost permanently in Aragon and she supported the rights to the throne of Castile and León of her grandson, Alfonso de la Cerda.

Violant's mother brought some Hungarian influence on the Spanish culture, and also introduced the Order of St. Paul.

Queen Violant died in Roncesvalles, Navarre, in 1301, on her return from Rome, where she had won the Jubilee in 1300.