Catherine of Siena convinced pope Gregory XI to move back to Rome. Unfortunately, he died shortly after moving. The cardinals then elected Urban VI to be the next pope. The French cardinals did not recognise this election as legitimate. They declared the papal see as vacant; which led to the Western Schism. The schism lasted until the Council of Constance in 1417. During this time, there was a pope in Rome, an Antipope in Avignon, and for some time, a second antipope. Each of the three was recognised as legitimate pope by different European powers. This led to a big split in the church as a whole. The council elected Pope Martin V as a new pope, recognised by all parties.