The Infanta Mafalda of Portugal (c. 1197-1256), The Lady of Arouca in her own right. She was a daughter of King Sancho I and his wife, The Infanta Dulce of Barcelona and Aragón. She was Queen of Castile (1215-1216) as the wife of King Enrique I. She was a Roman Catholic Cisetercian nun. She was beatified by the Roman Catholic Church as Blessed Mafalda. She had no children.