Protestant Reformers were those theologians, churchmen, and statesmen whose careers, works, and actions brought about the Protestant Reformation of the sixteenth century. Historically speaking, "Protestant" was the name given to those theologians, magnates, and delegations present at the Holy Roman Imperial Diet of Speyer in 1529 who protested the revocation of the suspension, granted at a prior Diet of Speyer in 1526, of Edict of Worms of 1521, which had outlawed Martin Luther and his followers.