The one hundred and twenty-third occupant of the Holy See, elected September, 911; d. November, 913. He was a Roman, being the son of a certain Lucian. His reign was marked with moderation, but beyond this history gives no details of his life, except that he was active in determining the ecclesiastical divisions of Germany. He succeeded Sergius III (904-911), and reigned, at most, about two years and two months.

P.L., CXXXI, 1181; JAFFÉ, Regesta Pont. Rom. I, 448: II, 706; HOEFER, Biogr. Univ., I, 477.