Sancho d'Aragona was a 13th-century Spanish archbishop and a member of the royal house of Aragon. Born around 1250 to King James I and Yolanda, he joined the Order of Mercy at a young age. He was appointed to lead the archdiocese of Toledo in 1266, holding this high position at only sixteen years old. During his tenure, he took an active role in military matters, organizing troops to confront the Marinid forces.