Author
- Osbern of Gloucester1
- Palazzo degli Anziani1
- Panormitanus1
- Paschal II1
- Paschasius Radbertus1
- Paschualis Bernardus1
- Patrick Graham, 1st Lord Graham1
- Paul of Venice1
- Paul the Deacon1
- Pedro de Serra1
- Pere Marsili1
- Pere Rossell1
- Peter Damian1
- Peter Olivi1
- Peter of Bergamo1
- Peter of Limoges1
- Petrus de Braco1
- Petrus de la Cavalleria1
- Philip Stos1
- Philip the Chancellor1