https://www.catholic.org/encyclopedia/view.php?id=6881
Second Lateran Council (1139) - Encyclopedia Volume - Catholic Encyclopedia - Catholic Online
The death of Pope Honorius II (February, 1130) was followed by a schism. Petrus Leonis (Pierleoni), under the name of Anacletus II, for a long time held in...
second lateran councilencyclopedia volume1139catholiconline