Paio Guterres, was a medieval knight linked to the formation of the kingdom, to D. Afonso Henriques and to the religious houses of Saint Augustine. This fountain dedicated to this figure linked to the foundation of Portugal is in the southeastern corner of the cloister, because it served the Manueline refectory of the nascent wing, of which there are no traces. It was built by the constructor of the cloister Marcos Pires in 1520.