 On 27 May 1273, King Alfonso X of Castile confirmed to the municipality of Sancti-Spíritus all the fueros as a favor to the monastery that, as he mentions, María Méndez had built in Salamanca and where Martín Alfonso, "son of the King of León" was buried.María is mentioned for the last time in June 1279 when King Alfonso X, at her behest, exempted the inhabitants of the town and the monastery from payment of several taxes, also allowing the nuns who entered the monastery to bring their properties, under certain conditions.Martín Alfonso only had one wife, María Méndes, daughter of Mem Gonçalves de Sousa (Menendo González de Sousa in Spanish) and Teresa Alfonso de Meneses, with whom he had no issue.