- Piccolomini, Magdalena1
- Piccolomini, Minus Caffinus1
- Piccolomini, Nerius Gabrielli de1
- Piccolomini, Pietro de1
- Piccolomini, Silvio di Silvio di Enea1
- Piccolomini, Spinello de1
- Piccolomini, Tengoccio d'Enea de1
- Piccolomini, Tommaso de1
- Piccolomini, Vanna di1
- Pieri, Bartolomeo1
- Pilgrims and pilgrimages1
- Politics and government1
- Prescriptions, formulae, receipts, etc.1
- Privileges and immunities1
- Purgatory1
- Religious poetry, English1
- Religious poetry, Latin1
- Requesens, Antonio de'1
- Requesens, Bernardo de'1
- Requesens, Eleonora de'1