Former Owner
- Apostolo Zeno1
- Arenburg1
- Arnold Jansen op de Haar1
- Arnold Mettler1
- Arthur Hood, 1st Baron Hood of Avalon1
- Arthur Lee Loeb1
- Arthur Liddell, 5th Baron Ravensworth1
- Arthur M. Ellis1
- Arthur de l'Isle du Dréneuc1
- Ashton Rollins Sanborn1
- Austin, Jehan1
- Aḥmad ibn Mubārak Luṭf Allāh1
- B.C. Barker-Benfield1
- Barbarigo family1
- Barbe de Laon1
- Baron Paul Adolphe Dieudonné Thiébault1
- Bartolomeo Amici1
- Basilica of Santa Maria Novella1
- Beatrice de Fouar1
- Beatus Rhenanus1