Name
- Jevan Vychan ab Jevan ab Llwyd1
- Jevan ab Grufydd Vychan1
- Jevan ab Jevan Wyn1
- Jevan ab Llywelyn ab Mali1
- Jevan ab Meredydd Hir1
- Jevan ab Rhys Morys1
- Johnson, Thomas, of Add MS 149351
- Jonas Athraw1
- Jones, Hugh, of Add MS 149351
- Jones, John, Colonel; of Add MS 149351
- Jones, John, alias Glan y Gors1
- Jones, Price1
- Jones, Robert, of Add MS 149581
- Jones, Roger, of Add MS 148881
- Jones, Rowland1
- Jones, Thomas, alias y Bard Cloff1
- Jones, Thomas, of Corwen1
- Jones, Thomas, of Krikaw1
- Jones, Thomas, of Tregarow, alias Thomas Sion Davydd Madog, alias Twm Sion Catti1
- Jorwerth, William, of Anglesey1