Author
- Pedro Luis de Borja Lanzol de Romaní1
- Philip Stos1
- Philippus1
- Pierre Froissard1
- Pierre Mésenge1
- Pietro Flores1
- Pietro Lamberti1
- Pius IV1
- Pius V1
- Prudentius1
- Ranieri Farnese1
- Ranuccio Farnese1
- Regiomontanus1
- Republic of Venice1
- Ressani family1
- Richard Ward1
- Roman Catholic Archdiocese of Siena1
- Sebastian Schindler1
- Sixtus V1
- Spain1