Odo of Châtillon was elected as the 159th pope of the Catholic Church. 1088 papal election: The 1088 papal election subsequent to the death of Pope Victor III in 1087 was held on 12 March 1088. Six cardinal-bishops, assisted by two lower-ranking cardinals, elected Cardinal-Bishop of Ostia Odon de Lagery as the new Pope. He assumed the name Urban II. March 12, 1088. Wiki link