Council of Pisa
（重定向自Pisa, Council of）
The Council of Pisa was an unrecognized ecumenical council of the Catholic Church held in 1409 that attempted to end the Western Schism by deposing Benedict XIII (Avignon) and Gregory XII (Rome). Instead of ending the Western Schism, the Council elected a third papal claimant, Alexander V, who would be succeeded by John XXIII.