Aeneas Silvius was the papal name of Pope Pius II, who was born in 1405 and served as the head of the Catholic Church from 1458 to 1464. There are several synonyms for Aeneas Silvius, including Enea Silvio Piccolomini, which was his birth name. He was also known as Aeneas Sylvius, Aeneas the Piccolomini, and Pope Pius II. During his tenure as pope, he was known for promoting humanism and diplomacy, and he was involved in several political and religious debates. His extensive writings, including his famous work "The Commentaries," are still studied and revered by scholars today.