Victor IV:- Two antipopes have claimed this name:

1. Cardinal Gregorio Conti, who was chosen by a party in succession to the antipope Anacletus II on March 13, 1138, but through the influence of Bernard of Clairvaux was induced two months afterwards to make his submission to Innocent II

2. Cardinal Octavianus, the Ghibelline antipope, elected in 1159, and countenaced by the emperor Barbarossa. He died at Lucca on 20th April 1164

from the 9th edition (1888) of an unnamed encyclopedia