Juan Martínez Silíceo

Juan Martínez Silíceo (1486–1557) was a Spanish Roman Catholic bishop, cardinal and mathematician.

Juan Martínez Silíceo was born in Villagarcía de la Torre in 1486, the son of Juan Martínez Guijeno, a poor laborer, and Juana Muñoz. His last name is also given as Guijarro.

Martínez studied grammar in Llerena, a small town near Villagarcía de la Torre, and then studied philosophy in Seville. To support himself, he served as a sacristan in the parish church in his home town. He then became the tutor of two sons of a gentleman in Valencia. He then moved on to the University of Paris to complete his studies. Afterwards, he became professor of moral philosophy at the Colegio de San Bartolomé, University of Salamanca.

After he was ordained as a priest, he became a professor of Christian theology. He then became the canon theologian of the cathedral chapter of the Cathedral of Coria. In July 1534, he was named tutor to Philip, Prince of Asturias, later becoming the prince's almoner and confessor.

...
Wikipedia