Name
- Owen, Gronwy, Reverend; alias Gronwy Ddu1
- Owen, John, MP for Anglesey1
- Parry, Morris1
- Pegge, Samuel, Reverend1
- Pennant, Hugh1
- Philipps, Dr1
- Price, Edmund1
- Price, Thomas, of Plas Jolyn1
- Principality of Wales1
- Raff ab Robert1
- Rhisiart Cynwal1
- Rhys Goch Eryri1
- Rhys Wyn ab Cadwaladr1
- Rhys ab Hywel ab Morgan1
- Rhys o Garno, alias Rhys o Drwen1
- Richard, David1
- Richards, Edward1
- Richards, Thomas, of Add MS 149291
- Robert ab Davydd Llwyd1
- Robert ab Gruffydd ab Jevan1