Achternamen
| Achternaam | Aantal |
|---|---|
| Castermans | 52 |
| Casters | 3 |
| Castille | 1 |
| Castricum | 2 |
| Castro | 16 |
| Castro, de | 1 |
| Casu | 1 |
| Cate, ten | 2 |
| Catelijn | 1 |
| Catelijns | 1 |
| Catgiu | 1 |
| Catry | 2 |
| Cats | 2 |
| Catsberg | 9 |
| Catsye, van de | 1 |
| Catteloin | 1 |
| Cattie | 1 |
| Cattoir | 1 |
| Cattoor | 1 |
| Cattrysse | 1 |
| Catuara | 1 |
| Cau | 1 |
| Cauberg | 26 |
| Caubergh | 31 |
| Caubergh, van | 3 |