Achternamen
| Achternaam | Aantal |
|---|---|
| Sikken | 2 |
| Sikkenga | 8 |
| Sikkenk | 1 |
| Sikkens | 1 |
| Sikkes | 4 |
| Sikking | 3 |
| Sikkink | 3 |
| Sikorski | 2 |
| Sikteubun | 1 |
| Silderhuis | 1 |
| Silkens | 36 |
| Sillekens | 13 |
| Sillen | 52 |
| Silln | 3 |
| Silva, de | 1 |
| Silverans | 2 |
| Silverentand | 3 |
| Silvertand | 16 |
| Silvertandt | 1 |
| Silvertant | 4 |
| Silvius | 1 |
| Silvrants | 12 |
| Simaer | 1 |
| Simais | 7 |
| Simanaviciute | 1 |