| Termen/ Term | Nr. apariții/ No. occurrences |
| CLENCIU ALEXANDRU | 13 |
| CLESINGER JEAN-BAPTISTE | 3 |
| CLIMENT | 244 |
| CLIMENT EPISCOPUL RIMNICULUI | 507 |
| CLODION | 2 |
| CLODION CLAUDE MICHEL | 6 |
| CLOSIUS CAROL-EDUARD | 1 |
| CLOSS ADOLF | 6 |
| CLOUWET PIETER | 1 |
| CLOVIO GIULIO | 1 |
| CLUCER SI SOTIA LUI ANCA | 1 |
| CLUJ | 1,738 |
| CLUJ (ATELIERUL) | 1 |
| CLUJ - NAPOCA | 2 |
| CLUJ NAPOCA | 1 |
| CLUJ SI SIBIU | 1 |
| CLUJ-MANASTUR | 1 |
| CLUJ-NAPOCA | 7 |
| CO. | 9 |
| COADA DORU | 2 |
| COBANEL ALBERT | 1 |
| COBAR NELL | 116 |
| COBGAR NELL | 1 |
| COCEA LAURA | 3 |
| COCEA MARIA | 1 |
| COCHIN | 2 |
| COCHIN C.N. | 1 |
| COCHIN CHARLES NICOLAS | 3 |
| COCHIN CHARLES NICOLAS FIUL | 48 |
| COCHIN CHARLES NICOLAS LE JEUNE | 8 |
| COCHIN CHARLES NICOLAS LE VIEUX | 12 |
| COCHIN CHARLES NICOLAS TATAL | 15 |
| COCIUBA LUCIAN | 1 |
| COCK CESAR DE | 1 |
| COCK HIERONIMUS | 7 |
| COCK HIERONYMUS | 12 |
| COCK HYERONIMUS | 1 |
| COCK I CEL BATRIN | 1 |
| COCK NIERONIMUS | 1 |
| COCKERELL C R | 4 |
| COCLICI ION | 3 |
| COCLITU GHEORGHE | 1 |
| COCOANA STANCA BALASOAICA | 1 |
| COCQUES GONZALES | 1 |
| COCULESCU PIA | 1 |
| CODDE PIETER IACOBUS | 1 |
| CODDE PIETER JACOBUS | 1 |
| CODIN | 2 |
| CODINA Y LANGLIN VICTORIANO | 1 |
| CODITA PAVEL | 54 |