María de Molina
Key figure in the history of the kingdom of Castile and León, daughter of the infante Alfonso de Molina, brother of King Fernando III, granddaughter of Alfonso IX of Leon and Queen Berenguela, she was born in 1260 and was queen three times. First after her marriage to Sancho IV, then as regent of her first-born son Fernando IV and later, for a short time until her death in 1321, as tutor of her grandson, the future Alfonso XI. His figure was essential to maintain power in a time marked by palace intrigues and disputes between the different kingdoms of the peninsula. She is considered one of the great queens in the history of Spain for her great skill in negotiations in defense of the interests of the Crown and the common good in the face of conflict. His tomb is in the monastery church of Las Huelgas Reales in Valladolid.