Reigned in 1276.
Born at Genoa, Italy as Ottobuono Fieschi; died on 18 August 1276 in Viterbo, Italy.
He was the nephew of Pope Innocent IV.
During his reign of six weeks he annulled the rigid enactments of Pope Gregory X concerning conclaves.
He is mentioned in Dante's Purgatorio.
New Catholic Dictionary
