John Wycliffe was an English scholastic philosopher, theologian, Biblical translator, reformer, and seminary professor at Oxford. He was an influential dissident within the Roman Catholic priesthood during the 14th century.
Wycliffe attacked the privileged status of the clergy, which was central to their powerful role in England. He then attacked the luxury and pomp of local parishes and their ceremonies.
Wycliffe was also an advocate for translation of the Bible into the vernacular. He completed a translation directly from the Vulgate into Middle English in the year 1382, now known as Wycliffe's Bible.