dna next to a surname below indicates it has been registered with the DNA linking service
and the researcher is keen to find bearers of the same surname to join a DNA project.
ons next to a user below means the user has registered a one-name study of a surname
with the Guild of One-Name Studies.
| Surname | Timeframe | Place | Researcher |
|---|---|---|---|
| IBELL | 1800-1900 | anywhere | Stephanie Chin |
| ILBERY | 1841-1869 | Any | Marilynn Kaye Weems |
| ILES | 1830-1860 | Ditchley Park | Paul Evans |
| ILES | Any | Coleshill | Kevin Harris |
| ILETT | Any | Swinbrook and nearby | Stuart Kreloff |
| ILLING | Any | Woodstock | Nadine Schofield |
| ILOTT | Any | Swinbrook and nearby | Stuart Kreloff |
| ILOTT | Last 300 years | Brize Norton, Faringdon, Bampton | Sally Hamilton |
| IMPEY | Any | Stadhampton | Alexandra Coles |
| ING | 1700s | Wroxton, Balscote | Sheila Matthews |
| INGRAM | Any | Any | Paul Landon |
| INMAN | Any | Any | Jim Williams |
| INMON | Any | Any | Jim Williams |
| INNES | Any | Dorchester | Richard Inns |
| INNES dna | <1790 | Cumnor | Jenny Lockett |
| INNESS | <1900 | North Oxford | Alan W. Inness |
| INNESS | <1700 | Any | Min Inness |
| INNS | <1818 | Banbury | Steve Kirby |
| INSALL | Any | Any | Patricia Capon |
| INSALL | >1800 | Chipping Norton | Colin Reeves |
| INWOOD | 1850-1900 | St Clement, Cowley St John | Dave Stevenson |
| INWOOD | Any | Oxford | Patrick Inwood |
| IONS | Any | Great Tew, Little Tew, Marston | Elizabeth Bradbury |
| IRESON | Any | Any | Becky Harris |
| IRESTON | Any | Any | Becky Harris |
| IRISH | >1700 | Any | Donna Chippewa |
| IRONS | Any | Bloxham | Elizabeth Coyle |
| IRONS | Any | Great Tew, Little Tew, Marston | Elizabeth Bradbury |
| IRVING | <1915 | Henley-on-Thames | Marlene Frechette |
| IRVING | Any | Russell's Water, Henley on Thames, Pishill, Northend, Assendon | Maurice Irwin |
| IRVING | 1760-1770 | Bix | Maurice Irwin |
| IRWIN | Any | Russell's Water, Henley on Thames, Pishill, Northend, Assendon | Maurice Irwin |
| ISAAC | Any | Kingham, nr. Idbury | Malcolm Barnes |
| ISCAC | 1600-1700 | Any | Jo Tuttle |
| ISMAN | <1730 | Any | Peter Eastman |
| IVES | >1800 | Any | M Cooper |
| IVES | 1780 - 1860 | Bix and Henley | Joan Henstock |
| IVINGS | Any | Oxford | Margaret Wilson |
| IVINGS | Any | Any | Sue Sargent |