| Termen/ Term | Nr. apariții/ No. occurrences |
| COSTIN GEORGETA | 3 |
| COSTIN IOANID | 1 |
| COSTIN PETRESCU | 36 |
| COSTIN VASILE | 4 |
| COSTINESCU AUGUSTIN | 3 |
| COSTINESCU RADU | 7 |
| COSTIS ILIE | 1 |
| COSTIURIN | 2 |
| COSWAY RICHARD | 2 |
| COTIFIDE STAVRU | 5 |
| COTISEL RADU | 3 |
| COTOSMAN ROMAN | 1 |
| COTOVEANU SILVIA | 1 |
| COTT IOAN | 3 |
| COTT ION | 5 |
| COTTAFAVI GAETANO | 1 |
| COTTARD | 1 |
| COTTART | 1 |
| COTTELOT | 2 |
| COTTET CHARLES | 1 |
| COTTREN | 2 |
| COUCHE | 2 |
| COUCHE LOUIS FRANCOIS | 1 |
| COULIN A. | 1 |
| COULIN ARTHUR | 13 |
| COULON AUGUSTA DE | 1 |
| COURBET GUSTAVE | 2 |
| COURBET JEAN DESIRE GUSTAVE | 12 |
| COURTEN ANGELO VON | 1 |
| COURTOIS GUSTAVE CLAUDE ETIENNE | 1 |
| COURTOIS JACQUES NUMIT LE BOURGUIGNON | 10 |
| COURTRY CHARLES JEAN LOUIS | 2 |
| COUSTOU | 1 |
| COUSTOU GUILLAUME | 1 |
| COUSTOU GUILLAUME I | 2 |
| COUTURE THOMAS | 1 |
| COVA IOSIF | 29 |
| COVACI IOAN | 2 |
| COVACI OCTAVIAN | 1 |
| COVACI ROMULUS | 1 |
| COVALIU BRADUT | 72 |
| COVALIU ION BRADUT | 4 |
| COVALSCHI GAVRIL | 3 |
| COVALSCHI GHEORGHE | 5 |
| COVATARU DAN | 1 |
| COVRIG ANETA | 41 |
| COVRIG DORU | 3 |
| COXIE MICHIEL | 1 |
| COXIE MICHIEL I | 32 |
| COYPEL | 1 |