Author
- Orderic Vitalis1
- Osbern of Gloucester1
- Panormitanus1
- Paolo da Firenze1
- Paschasius Radbertus1
- Paul of Pergula1
- Paul the Deacon1
- Paulus Melissus1
- Pere Marsili1
- Pere Rossell1
- Perets ben Yitsḥak Ghirondi1
- Peter Damian1
- Peter Olivi1
- Peter of Bergamo1
- Peter of Limoges1
- Peter, Constable of Portugal1
- Petrus de Braco1
- Philip the Chancellor1
- Pierre Mathieu1
- Pierre Mésenge1