Name
- Jevan Llwyd Jeffrey1
- Jevan Sion o Wedir1
- Jevan Vychan ab Jevan ab Adda1
- Jevan ab Grufydd Vychan1
- Jolo Goch, of Add MS 148661
- Jones, Griffith, of Add MS 148801
- Jorwerth Beli1
- Jorwerth, William, of Anglesey1
- Kyffin, Roger1
- Lewis Môn1
- Lewis, John, of Add MS 148921
- Llannerch Library1
- Llevoed Wynebelawr1
- Lloyd, David, o Globrwyn1
- Lloyd, David, of Add MS 148731
- Lloyd, Family1
- Lloyd, J- Davydd, or Hen Blas1
- Lloyd, Robert, of Add MS 148821
- Lloyd, William, Bishop of St Asaph and of Lichfield and Coventry1
- Lloyd, of the Exchequer1