Bishops of Rome and the Popes: 2 popes
Sixtus I (a.k.a. Xystus)   115-124  
Sixtus II (a.k.a. Xystus)   257-258  
Saints: 2 saints
Saint Sixtus I (a.k.a. Xystus)   42-124  
Saint Sixtus II (a.k.a. Xystus)   ?-258