Berengaria of Castile, Lady of Guadalajara

Berengaria of Castile, Infanta of Castile and Lady of Guadalajara in her own right. She was the eldest child of King Alfonso X of Castile and Violante of Aragon. She was probably named after her paternal great-grandmother, Queen Berengaria of Castile. As the first-born daughter, she was the heiress to the throne until the birth of her brother, the Infante Fernando de la Cerda. Her paternal grandparents were King Ferdinand III of Castile and his first wife Elisabeth of Swabia and her maternal grandparents were King James I of Aragon and his second wife Violant of Hungary.