Bishops of Rome and the Popes: 14 popes, 3 antipopes
Clement I (a.k.a. Clemens)   92-99  
Clement II (a.k.a. Clemens)   1046-1047  
Clement III (a.k.a. Clemens)   1080; 1084-1100  
Clement III (a.k.a. Clemens)   1187-1191  
Clement IV (a.k.a. Clemens)   1265-1268  
Clement V (a.k.a. Clemens)   1305-1314  
Clement VI (a.k.a. Clemens)   1342-1352  
Clement (a.k.a. Clemens)   1378-1394  
Clement (a.k.a. Clemens)   1423-1429  
Clement VII (a.k.a. Clemens)   1523-1534  
Clement VIII (a.k.a. Clemens)   1592-1605  
Clement IX (a.k.a. Clemens)   1667-1669  
Clement X (a.k.a. Clemens)   1670-1676  
Clement XI (a.k.a. Clemens)   1700-1721  
Clement XII (a.k.a. Clemens)   1730-1740  
Clement XIII (a.k.a. Clemens)   1758-1769  
Clement XIV (a.k.a. Clemens)   1769-1774  
Notable Actors and Entertainers: 1 actor
Gustav von Wangenheim (middle name Clemens)   1895-1975  
Notable Filmmakers: 1 director
Gustav von Wangenheim (middle name Clemens)   1895-1975  
Olympic Medalists: 1 bronze
(bronze) Clemens Arnold   2004   field hockey  
Saints: 2 saints
Saint Clement I (a.k.a. Clemens)   c. 35-99  
Saint Clemens Maria Hofbauer   1751-1820