Pisa took place in the Cathedral on 25 March 1409. Cardinal Guy de Malsec, Bishop of Palestrina, was the senior cardinal in attendance. On 10 May the Cardinals took a preliminary vote on the deposition of the two popes, which was completely in favor, except for Cardinals Brancacci and Malsec, who asked for time for further consideration. At the fifteenth session, which took place on 5 June 1409, the two papal claimants, Benedict XIII (Pedro de Luna) and Gregory XII (Angelo Corraro), were declared to be notorious schismatics, heretics and perjurers, and were anathematized. Conclave of 1409 With the ground cleared, the cardinals then proceeded to a papal election. The Conclave opened in the Episcopal Palace in Pisa on 15 June, a sort of Novendiales (the traditional nine days of mourning for a dead pope) being observed. Twenty three cardinals entered Conclave on the opening day, and they were joined the next day by Cardinal Antonio Calvi. Cardinal Guy de Malsec presided. There were ten cardinals of the Avignon Obedience and fourteen others. Two days before the Conclave began the cardinals had entered into an agreement that it would take at least a two-thirds vote of each of the two Obediences for a valid election, thereby ensuring that both Obediences would accept the result as valid. There was a major problem. The French faction had enough votes that they could easily elect a French pope. Everyone knew that. Everyone also knew that a French pope would probably be rejected both by the followers of Gregory XII and those of Benedict XIII, and the Schism would continue. The French, therefore, had to find a candidate who would be agreeable to their faction and who would be embraced by the others as well. That person could not be a Frenchman. But the French would never accept a pope who was associated with one of their enemies in Italy, especially Ladislaus of Naples. Eventually, on 26 June 1409, the Cardinals agreed unanimously on a Franciscan from Crete who had been raised in Venice, Pietro Filargi, O.Min., who took the throne name Alexander V. Pope Alexander survived his election a little over ten months, dying at Bologna on his way back to Rome on the night of 3-4 May 1410. Later years He wrote his Last Will and Testament at Avignon on 12 September 1407, adding a Codicil on 8 March 1411 Old Style