Former Owner
- Riddagshausen Abbey1
- Riederer, Georg Wilhelm1
- Rinaldo Ridolfini1
- Robert B. Honeyman1
- Robert Benson, fl. Ca, 18th c.1
- Robert Branthwait1
- Robert Brodhead Honeyman4
- Robert Charles Winthrop1
- Robert Churchill1
- Robert Dallas1
- Robert Davies4
- Robert Dechert1
- Robert Devereux, 2nd Earl of Essex1
- Robert Dudley, 1st Earl of Leicester1
- Robert Elyot1
- Robert Forrer2
- Robert Fyncham1
- Robert Garrett21
- Robert H. Sayre1
- Robert Hoe III75