| Name | Insgesamt | Name | Insgesamt |
|---|---|---|---|
| Isnach, von | 3 | Itschner | 4 |
| Isolowicz (Joselovicz, Berger) | 1 | Itt | 1 |
| Isopponi | 1 | Itta | 1 |
| Isorni | 1 | Itten | 1 |
| Isoth | 18 | Ittersum, van | 2 |
| Istigont | 1 | Ittin | 1 |
| Ita | 9 | Ittinger | 1 |
| Itel | 1 | Ivanic | 1 |
| Item | 3 | Ivernois, d' | 48 |
| Iten | 65 | Iversin | 1 |
| Itensohn | 1 | Ivry, von | 1 |
| Iter | 5 | Iwanowna von Pochvisneff | 1 |
| Iteret | 1 | Izant | 1 |
| Itewung | 1 | Izenet | 2 |
| Ith | 377 | Iziger | 5 |
| Itin | 3 | - | - |