Former Owner
- Gaetano Schiepati1
- Garegnano Charterhouse1
- General Bookbinding Company of Chesterland, OH1
- George C. Thomas1
- George Dawson Coleman1
- George F. Leighton1
- George M. Millard1
- George N. Olcott1
- George Spencer, 2nd Earl Spencer1
- George Venables-Vernon, 5th Baron Vernon1
- George Watson-Taylor1
- Giacinto della Torre1
- Giacomo Manzoni1
- Gilhofer & Ranschburg, Vienna1
- Giovan Pietro Arrivabene1
- Giovanni Alessandro Brambilla1
- Giovanni Angelo Altemps1
- Giovanni Colonna1
- Giovanni Pietro Visconti1
- Giovanni Saibanti1