Fernando de la Cerda (1255–1275)

Ferdinand de la Cerda (23 October 1255 – 25 June 1275) was the heir apparent to the Crown of Castile as the eldest son of Alfonso X and Violant of Aragon. His nickname, de la Cerda, means "of the bristle" in Spanish, a reference to being born with a full head of hair. In November 1268 he married Blanche, the daughter of King Louis IX of France. They had two sons:

Fernando de la Cerda (1255–1275)

Ferdinand de la Cerda (23 October 1255 – 25 June 1275) was the heir apparent to the Crown of Castile as the eldest son of Alfonso X and Violant of Aragon. His nickname, de la Cerda, means "of the bristle" in Spanish, a reference to being born with a full head of hair. In November 1268 he married Blanche, the daughter of King Louis IX of France. They had two sons: