Name
- Parry, Morris1
- Pennant, Hugh1
- Pezron, Paul, Abbé de la Charmoye1
- Philip, Richard1
- Philip, William1
- Plinius Secundus, Caius, also known as Pliny the Elder, 23-79, http://isni.org/isni/000000... http://viaf.org/viaf/1002191621
- Price, Edmund1
- Price, Thomas, of Plas Jolyn1
- Principality of Wales1
- Rhisiart Cynwal1
- Rhys Goch Eryri1
- Rhys Meigan1
- Rhys Wyn ab Cadwaladr1
- Rhys ab Hywel ab Morgan1
- Rhys o Garno, alias Rhys o Drwen1
- Rhys, John David1
- Robert ab Davydd Llwyd1
- Robert ab Gruffydd ab Jevan1
- Roberts, Rhydderch1
- Robin Ddu, of Add MS 148661