The College of Cardinals was then made up of 66 members, of whom all but 12 cardinals were in Rome at the time the conclave was called, so the conclave had 54 participants, chosen by the following popes: * pope Gregory XV: 9 cardinals * pope Paul V: 32 cardinals * pope Clement VIII: 8 cardinals * pope Gregory XIV: 2 cardinals * pope Sixtus V: 2 cardinals * pope Gregory XIII: 1 cardinal The conclave divided up into four factions: