Achternamen
| Achternaam | Aantal |
|---|---|
| Clas | 1 |
| Claßen | 1 |
| Clasius | 2 |
| Classen | 18 |
| Classen (Reuling) | 1 |
| Classens | 16 |
| Claszen | 2 |
| Claus | 29 |
| Clause | 1 |
| Claushuis | 1 |
| Clausman | 1 |
| Claussen | 1 |
| Clauw | 4 |
| Clauwaert | 1 |
| Clauwé, de | 1 |
| Clauwers | 6 |
| Clavaux | 1 |
| Claveaux | 2 |
| Claver | 1 |
| Clayens | 1 |
| Claykens | 1 |
| Cleber | 4 |
| Clec'h | 1 |
| Clee, van | 1 |
| Cleef | 18 |