John Wycliffe (/ˈwɪklɪf/; also spelled Wyclif, Wycliff, Wiclef, Wicliffe, Wickliffe; 1320s – 31 December 1384) was an English scholastic philosopher, theologian, Biblical translator, reformer, English priest, and a seminary professor at the University of Oxford. He was an influential dissident within the Roman Catholic priesthood during the 14th century and is considered an important predecessor to Protestantism.