Achternamen
| Achternaam | Aantal |
|---|---|
| Ulsek | 1 |
| Ultee | 1 |
| Um | 1 |
| Umans | 3 |
| Umbach | 1 |
| Umbrosius | 1 |
| Ummelen | 5 |
| Ummels | 91 |
| Ummenthum | 5 |
| Ummenthun | 7 |
| Ummethum | 1 |
| Unen, van | 4 |
| Unger | 4 |
| Ungerechts | 1 |
| Ungerer | 1 |
| Ungruh | 1 |
| Unkel | 1 |
| Unlandt | 1 |
| Unruh | 1 |
| Unsinn | 1 |
| Untersander | 1 |
| Unverzagt | 1 |
| Uphof | 2 |
| Uphus | 1 |
| Uran | 1 |