Former Owner
- Philip Hofer1
- Pietro1
- Pietro Antonio Crevenna1
- Pietro Antonio Maffei1
- Pietro Canal1
- Pietro Civaleri1
- Pietro Dini1
- Pietro Giometti1
- Pietro Odescalchi1
- Pius VI1
- Preston A. Perry1
- Rafael Gomes1
- Raphael de Mediolano1
- Ricardo Enrico de Wilde1
- Richard Bennett1
- Richard Priestley1
- Robert Garrett1
- Robert S. Pirie1
- Ross Winans1
- Rush Hawkins1