Former Owner
- Richard Bennett1
- Richard Heber1
- Richard Priestley1
- Richard Sackville1
- Robert Branthwait1
- Robert Brodhead Honeyman5
- Robert Forrer2
- Robert Garrett5
- Robert H. Sayre1
- Robert Hoe III45
- Robert Lyle1
- Robert Mignan2
- Robert de Hangest1
- Ross Winans2
- Rudolf Busch1
- Rush Hawkins1
- Rushton Mather Dorman1
- Ruth Cheney Streeter1
- Sabin1
- Sabina Sopheija Behren1