Pope Stephen I was the bishop of Rome from 12 May 254 to his death in 257. Of Roman birth but of Greek ancestry, he became bishop after serving as archdeacon of Pope Lucius I, who appointed Stephen his successor. Following the Decian persecution of 250–251, there was disagreement about how to treat those who had lapsed from the faith, and Stephen was urged by Faustinus, Bishop of Lyon, to take action against Marcian, Bishop of Arles, who denied penance and communion to the lapsed who repented, the position called Novatianism, after Novatian, later declared a heretic, who held for the strictest approach. Stephen held that converts who had been baptized by splinter groups did not need re-baptism, while Cyprian and certain bishops of the Roman province of Africa held rebaptism necessary for admission to the Eucharist. Stephen's view eventually won broad acceptance. He is also mentioned as having insisted on the restoration of the bishops of León and Astorga, who had been deposed for unfaithfulness during the persecution but afterwards had repented. The Depositio episcoporum of 354 does not speak of Pope Stephen I as a martyr and he is not celebrated as such by the Catholic Church, in spite of the account in the Golden Legend that in 257 Emperor Valerian resumed the persecution of Christians, and Stephen was sitting on his pontifical throne celebrating Mass for his congregation when the emperor's men came and beheaded him on 2 August 257. As late as the 18th century, what was said to be the chair was preserved, still stained with blood.