Archbishop of Mainz, a dignity granted him by Pope Leo X. at the ransom of £15,000, which he was unable to pay, and which, as the Pope needed it for building St. Peter's, he borrowed, the Pope granting him the power to sell indulgences in order to repay the loan, in which traffic Tetzel was his chief salesman, a trade which roused the wrath of Luther, and provoked the German Reformation (1450-1545).