Pius II, also known as Enea Silvio Piccolomini, was the head of the Catholic Church from 1458 to 1464. The term "Pius II" is often used synonymously with his papacy and accomplishments during this time. Other synonyms that can be used to describe Pius II include his birth name, Enea Silvio Piccolomini, as well as his title as Bishop of Trieste. He was a renowned scholar, diplomat, and writer, known for his work in humanistic studies and his contributions to the Renaissance era. His writings include poems, plays, and historical accounts, and he is credited with promoting the literary and artistic revival of the time.