The Council of Pisa elects Alexander V as the new pope on June 26,1409 further deepening the Western Schism, since the two existing popes refused to abdicate resulting in three competing claims to the papacy, further weakening the authority of the Church.
The Western Schism was not resolved until the Council of Constance in 1417, which deposed the three claimants and elected Martin V, finally reuniting the papacy.