| Surname | Forename(s) | Town | Occupation | Date | Ref. No. | |
|---|
 | Jacks |
| |
|
|  |
| Jacob |
| |
|
| |
| Jacson |
| |
|
| |
| Jagger |
| |
|
| |
| Jane |
| |
|
| |
 | Jankyn |
| |
|
|
| Ap Agnes Verch Llewelyn Ap Tuder |
| |
|
|
| Ap Eignion Gethin |
| |
|
|
| |
|
|
| Ap Gruffith Ap Howell Goch |
| |
|
|
| |
|
|
| Ap Hillo |
| |
|
|
| |
|
|
| Ap Ieuan Ap Llewelyn |
| |
|
|
| Ap Ieuan Ap Llewelyn Ap Grono Lloyt |
| |
|
|
| Ap Ieuan Ap Llewelyn Ap Gruffith Lloyd |
| |
|
|
| |
|
|
| Ap Jollin Ap Gr' Ap Ieuan Goch |
| |
|
|
| Ap Jollyn Ap Gruffith Ap Ieua Goch |
| |
|
|
| Ap Jollyn Ap Jankyn |
| |
|
|
| |
|
|
| Ap Rys Ap Tydyr |
| |
|
| |
| Jardine |
| |
|
| |
| Jarman |
| |
|
| |
| Jarvis |
| |
|
| |
| Jebb |
| |
|
| |
| Jeece |
| |
|
| |
| Jeffery |
| |
|
| |
| Jefferys |
| |
|
| |
| Jeffreys |
| |
|
| |
| Jeninges |
| |
|
| |
| Jenkins |
| |
|
| |
| Jenks |
| |
|
| |
| Jenninges |
| |
|
| |
| Jennyngs |
| |
|
| |
| Jenour |
| |
|
| |
| Jephson |
| |
|
| |
| Jesper |
| |
|
| |
| Jessop |
| |
|
| |
| Jevons |
| |
|
| |
| Jodrell |
| |
|
| |
| John |
| |
|
| |
| Johns |
| |
|
| |
| Johnstone |
| |
|
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| Jolliffe |
| |
|
| |
| Jonas |
| |
|
| |
| Jones |
| |
|
| |
| Jones-Mortimer |
| |
|
| |
| Jones-Roberts |
| |
|
| |
| Jones Alias Evans |
| |
|
| |
| Jones Bateman |
| |
|
| |
| Jones Griffiths |
| |
|
| |
| Jones Morris |
| |
|
| |
| Jones Parry |
| |
|
| |
| Jones (Alias Edwards) |
| |
|
| |
| Jones (Alias Shone) |
| |
|
| |
| Jones, Bulkeley O |
| |
|
| |
| Jones, Winifred Otherwise Richards |
| |
| Jones, (Formerly Burdett) |
| |
| Jones. |
| |
|
| |
| Jonett |
| |
|
| |
| Joseph |
| |
|
| |
| Jowett |
| |
|
| |
| Joyce |
| |
|
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| Judge |
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|
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| Jury |
| |
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| |