 In Pisa, with the encouragement of Bernard of Clairvaux, who was travelling with him and supporting his cause, he summoned a council of bishops.The number of attendees is not known, but it is said that bishops from Spain, Gascony, England, France, Burgundy, Germany, Hungary, Lombardy, and Tuscany attended.Innocent II excommunicated his rival, Anacletus II, and all his followers.