Name
- Jevan o Garno, Syr1
- Johnson, Thomas, of Add MS 149351
- Jolo Goch, of Add MS 148661
- Jones, Hugh, of Add MS 149351
- Jones, John, Colonel; of Add MS 149351
- Jones, John, of Add MS 149371
- Jones, John, of Celli Lyvdy1
- Jones, Price1
- Jones, Rice, of Blaenau1
- Jones, Thomas, of Krikaw1
- Jones, Thomas, of Tregarow, alias Thomas Sion Davydd Madog, alias Twm Sion Catti1
- Jorwerth, William, of Anglesey1
- Kings of Portugal1
- Lewis Môn1
- Lewis, David, of Add MS 149291
- Linden, Dr1
- Llevoed Wynebelawr1
- Lloyd, David, of Add MS 148731
- Lloyd, Edward, of Add MS 148661
- Lloyd, Fulk1