Marcellus   (m)  
Shakespearian Characters   Hamlet
Marcellus I   (m)   255-309  
Bishops of Rome and the Popes   308-309
Saints
Marcellus the Centurion   (m)   ?-298  
Saints
Marcellus   (m)   ?-304  
Saints
Marcellus of Apamaea   (m)   ?-389  
Saints
Marcellus   (m)   ?-510  
Saints
Marcellus II   (m)   1501-1555  
Bishops of Rome and the Popes   1555
Muhammad Ali   (a.k.a. Marcellus)   (m)   1942-2016  
Notable Athletes   (boxing)
Marcellus Washburn   (m)  
Fictional Characters from Plays and Musicals   1957   The Music Man