Achternamen
| Achternaam | Aantal |
|---|---|
| Cortis | 1 |
| Cortisse | 4 |
| Cortjaens | 1 |
| Cortjens | 3 |
| Cortleven | 10 |
| Cortlever | 9 |
| Corton | 2 |
| Cortooms | 2 |
| Cortselius | 1 |
| Cortvriend | 1 |
| Cortvriendt | 3 |
| Corven, van | 1 |
| Corver | 2 |
| Cörvers | 100 |
| Coryn | 2 |
| Coseman | 1 |
| Cosemans | 51 |
| Cosiolkofskij | 1 |
| Cosman | 1 |
| Cossembronne | 1 |
| Costa, da | 1 |
| Coster | 1 |
| Coster, de | 10 |
| Costere, de | 1 |
| Costers | 2 |