Former Owner
- Frederick Lewis Gay1
- Garcia de Loaysa Giron1
- Gasser, Rudolf von, Freiherr, -1911?1
- Georg Kloss1
- George B. Ward1
- George Chalmers1
- George Herbert, 4th Earl of Powis1
- George Templeton Strong1
- Giacomo Eugenio De Levis1
- Giannalisa Feltrinelli1
- Giovanni Perissinotti1
- Giulio Saibante1
- Giuseppe Antonio Saccardini1
- H. Bayle1
- H. P. Kraus (firm)1
- Hamon Styleman Le Strange1
- Harry Levinson1
- Henry Brudenell-Bruce, 5th Marquess of Ailesbury1
- Henry Oppenheimer1
- Henry Pelham-Clinton, 4th Duke of Newcastle1