The four letter crossword solution for the term 'Name of 12 Popes' is Pius. Pius is a Latin name meaning 'PIOUS' or 'DEVOUT'. It was the name of twelve popes, including Pope Pius I, Pope Pius II, Pope Pius III, Pope Pius IV, Pope Pius V, Pope Pius VI, Pope Pius VII, Pope Pius VIII, Pope Pius IX, Pope Pius X, Pope Pius XI, and Pope Pius XII. All of these popes were members of the Catholic Church and served as the head of the church during their respective papacies.