Former Owner
- Arnold Mettler1
- Bahman Mirza Qajar1
- Baldasarre Boncompagni1
- Baldassarre Boncompagni1
- Basilica Gößweinstein1
- Bertram Ashburnham, 4th Earl of Ashburnham1
- Brudenell family1
- Būtū ʻAbd al-Bāqī1
- Chapelle du monastère du Carmel de Nantes1
- Charles Spencer, 3rd Duke of Marlborough1
- Charles Spencer, 3rd Earl of Sunderland1
- Charles William Dyson Perrins1
- Collège Saint-Clément1
- Coppo family1
- Cortlandt F. Bishop1
- David Swan1
- Edmunde Mulse1
- Edward Herbert, 2nd Earl of Powis1
- Edward Herbert, 3rd Earl of Powis1
- Edward Heron-Allen1