In 1409 a council was held by
Gregory XII against the pretensions of the rival popes,
Benedict XIII (Peter de Luna) and
Alexander V (Peter of Candia). He declared them schismatical, but promised to renounce the papacy if they would do the same. Pope Gregory had responded to the call of the cardinals at Livorno in June 1408 for a general council to be held at Pisa with an announcement that he would hold a council himself, somewhere in the territory of Aquileia or the territory of Rimini. Aquileia ceased to be an attractive venue when its Patriarch announced his adherence to the Council of Pisa and sent representatives to Pisa. On 19 December 1408 Pope Gregory fixed the town of Cividale as the site of his council. His council held its inaugural session on 6 June 1409, the day after he had been formally deposed by the Council of Pisa. The attendance was so embarrassingly small that he had to issue new letters of convocation on 20 June 1409, with a date of 22 July for the Second Session. He authorized his friend
King Rupert (Ruprecht) to depose any prelate in his domains who refused to obey the summons to his council. He received a severe blow when the Venetians decided to support the Council of Pisa, since Venice controlled both the land and sea routes between Rimini and Cividale. In that Second Session Gregory XII declared that his little assembly was a general council of the entire Church. He then declared all the popes of the Roman Obedience back to Urban VI to be canonical, and he anathematized all the popes of the Avignon Obedience, and included Alexander V for good measure. Another session was held on 5 September 1409, at which he demanded that Peter of Candia (Alexander V) renounce the position to which he had been elected by an uncanonical conclave. Trapped in Friuli, Gregory XII had to be rescued by ships which had been sent by Ladislaus of Naples. Disguised as a merchant he fled on 6 September, bringing his council to a sudden end. He made first for Ortona on the Adriatic, and then Gaeta in central Italy. His chamberlain, who was playing the part of the pope in order to distract his pursuers, was captured by the soldiers of the Patriarch of Aquileia. ==Council of 1596==