Former Owner
- Pietro Giuseppe Ignati Mattei Cattochii1
- Prieuré Saint-Louis de Poissy1
- Prince Augustus Frederick, Duke of Sussex1
- Prosper Blanchemain1
- Qāsim al-Īrawānī1
- Raoul Léonor Lignerolles1
- Raphael King1
- Reuschenberg, Margreta von1
- Ricardo, Conde de Benahavis Heredia1
- Richard Heber1
- Richard Pynson1
- Robert Brodhead Honeyman1
- Robert Devereux, 2nd Earl of Essex1
- Robert Mignan1
- Robert de Mol1
- Sabina Sopheija Behren1
- Samuel Allan1
- Samuel David Luzzatto1
- Samuel Lee1
- Samuel Putnam Avery1