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| Name | Total | Name | Total | Name | Total | Name | Total | Name | Total |
|---|---|---|---|---|---|---|---|---|---|
| Ingals | 1 | Iowerth | 1 | Ida | 2 | Irby | 18 | Ireland, De | 5 |
| Isnogle | 1 | Iorweth | 1 | Italia, De | 1 | Ireland | 2 | Inge | 1 |
| Isobel | 1 | Isles | 3 | Ivrea | 3 | Iseuda | 1 | Ieuan | 1 |
| Isabel | 8 | Islay | 1 | Ingelheim, De | 2 | Ithel | 3 | Irene | 1 |
| Isabell | 3 | Iago | 1 | Ivrea, De | 1 | Ingham, De | 1 | Ivan | 1 |
| Ivar | 2 | Ivera | 1 | Inglis | 1 | Ingham | 1 | Iseult | 1 |
| Idwal | 1 | Italy | 3 | Inchmartine | 2 | I'Isle-Bouchard, De | 1 | Ireby, De | 1 |
| Ingenach | 1 | Ivo | 1 | Ifield, De | 2 | Iorwerth | 1 | Ivry, D' | 2 |
| Idonea | 1 | Innes | 13 | Ivetta | 1 | Ibelin, D' | 1 | - | - |
| Isabella | 4 | Insula, De | 8 | Irvine | 1 | I'Aigle, De | 1 | - | - |
| Isle, De | 5 | Igor | 1 | Ingjaldsson | 1 | Iestyn | 1 | - | - |
| Issac | 2 | Ingle | 1 | Ivarsson | 1 | Idwallon | 1 | - | - |