Background
One of his first appearances in contemporary documentation was on January 13, 1243 at the Monastery of Santiago de Ermelo, in Bueu, Galicia, when he and his mother Taresia Egidii sold some property to a Martín Fernández and his wife.
One of his first appearances in contemporary documentation was on January 13, 1243 at the Monastery of Santiago de Ermelo, in Bueu, Galicia, when he and his mother Taresia Egidii sold some property to a Martín Fernández and his wife.
The relationship between King Alfonso IX and Teresa probably began after the king separated from Queen Berengaria of Castile around 1204. They made many donations for its founding, including lands in Galicia, León, and Portugal, requesting to be buried there. Martín appears for the last time in the documentation of this monastery on November 3, 1269.
On April 17, 1272, María made another donation stating that she was a widow.
On May 27, 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.