Adrian VI               Agapetus III            Albert II               Alexander V             

Anastasius V            Benedict XIII           Boniface XI             Calixtus III            

Celestine VI            Clement VI              Constantine II          Damasus III             

Eugene IV               Felix V                 Formosus II             Gelasius III            

Gregory XI              Honorius V              Innocent VI             John XXIII              

Julius II               Leo X                   Lucius IV               Marcellus II            

Marinus III             Martin V                Nicholas V              Pascal II               

Paul IV                 Pelagius III            Pius II                 Romanus II              

Sergius V               Sixtus VI               Stephen X               Sylvester IV            

Theodore III            Urban V                 Valentinus II           Victor IV               

Zacharias II                                                            
                        

No one should be allowed to introduce a new name into the canon. John Paul I was the first "I" since 913. We were tempted to insert a Unix V, but good sense prevailed.