Former Owner
- Pierre Tassel1
- Pietro Civaleri1
- Pietro Giuseppe Ignati Mattei Cattochii1
- Pietro Millini1
- Pius XI1
- Poblet Monastery1
- Pîrîzâde, Sayyid ʻAbd Allāh, Shaykh al-Islām1
- Qusṭanṭīn ibn Lūdūlf1
- Rafael Gomes1
- Raphael Nathan Nata Rabinowitz1
- Raymond Oliver1
- Richard Halter1
- Richard James Horatio Gottheil1
- Richard McKeon1
- Richard Rich1
- Robert Churchill1
- Robert Dallas1
- Robert Dechert1
- Robert Mignan1
- Robert Neville1