Bishops of Rome and the Popes: 1 pope
Caius   283-296  
Saints: 2 saints, 1 blessed
Saint Caius   ?-296  
Saint Gaius Francis (a.k.a. Caius)   ?-1597  
Blessed Caius   ?-1624  
Shakespearian Characters: 8 characters
Caius Proculeius   Antony and Cleopatra  
Caius Marcius   Coriolanus  
Caius Cassius   Julius Caesar  
Caius Ligarius   Julius Caesar  
Caius   King Lear  
Doctor Caius   The Merry Wives of Windsor  
Caius   Titus Andronicus  
Caius Lucius   Cymbeline