Offa vowed at the council to donate 365 mancuses each year to the papacy, to provide for poor people in Rome and to provide lights for St. Peter's Basilica, stated to be a thanks-offering for his victories. C. J. Godfrey has argued that the donation was really in return for the papal approval of Offa's scheme to elevate the diocese of Lichfield to an archdiocese. Whatever Offa's motivation, historians have generally seen the gift as the beginning of Peter's Pence, an annual "tax" paid to Rome by the English Church.