| IBE | 20 - 40 - 87 |
| IBELE | 21 |
| IBELING | 82 |
| IBERLING | 82 |
| IBS | 44 |
| IBSCH | 44 |
| IDELL | 44 |
| IGEL | 21 |
| IGIELSKI | 44 |
| IGNERA | 43 - 89C - 89D |
| IHDE | 32 |
| IHLENFELD | 44 - 63 |
| IHLENFELDT | 32 - 44 - 64 - 89A - 89C - 89D |
| IHRIG | 32 |
| ILECKI | 26 |
| ILES | 89D |
| ILK | 46 |
| ILLG | 43 |
| ILLIG | 87 |
| IMHOFF | 44 |
| IMHOOF | 40 |
| IMMLER | 89A |
| INDESTAD | 89 C |
| INGALZ | 89D |
| INGEBRETSON | 2 |
| INGRISCH | 43 - 44 |
| INMAN | 89C |
| INNES | 44 |
| INNY | 21 |
| IREK | 44a |
| IRELAN | 82 |
| IRICK | 32 - 44 |
| IRWIN | 44 |
| ISAACSON | 44 - 55 |
| ISACK | 43 |
| ISAKSEN | 41 |
| ISAKSON | 41 |
| ISELMANN | 22 |
| ISELY | 83 |
| ISLEY | 32 |
| ISOCIAN | 44 |
| ISSACS | 89D |
| ISSELMAN | 46 |
| ISSELMANN | 21 - 43 - 44 |
| IVERSON | 36 - 41 - 44 |
| IVIS | 32 |
| IWEN | 53 - 89D |