| 636 | ILLETT | Somerset | All | |||||
| 195 | INGRAM | Kings Norton | pre1799 | |||||
| 205 | INNES | Edinburgh | 1680+ | |||||
| 052 | ISAAC (Ann) | Horton, Dorset | c1755 | |||||
| 052 | ISAAC (Ann) | Horton, Wiltshire | c1755 | |||||
| 195 | IVEY | Mawgan in Pydar | pre1691 | |||||
| 645 | IVEY | Cornwall/Devon | All | |||||
| 195 | IVY | Mawgan in Pydar | pre1691 | |||||