Former Owner
- Henry Probasco1
- Henry Stevens1
- Henry White1
- James Lyell1
- Johann Heinrich van Ess1
- Johann Heinrich von Speyr-Passavant1
- John Henry Nash1
- Lawrence J. Schoenberg1
- Leonhardus Cuntius1
- Louis-Jean-Nicolas Monmerqué1
- Monastery at San Gregorio al Celio1
- Nicolas Antoine Labbey de Billy1
- Otto Jahn1
- Peter Eaton1
- Petrus Molitor1
- Robert Forrer1
- San Michele in Isola1
- St. Matthias' Abbey1
- Stevens Henry Newton1
- Stift Hamersleben1