Former Owner
- Antonio de Bonius1
- Antony Bek1
- Appiano family1
- Arenburg1
- Arnold Jansen op de Haar1
- Arnold Mettler1
- Arthur Brölemann1
- Arthur Kay1
- Arthur Lee Loeb1
- Arthur M. Ellis1
- Ashridge Priory1
- Athelstan Riley1
- Augustus Pugin1
- Austin, Jehan1
- Avraham Yedidiah Levi1
- B.C. Barker-Benfield1
- Bahman Mirza Qajar1
- Baldasarre Boncompagni1
- Baron Paul Adolphe Dieudonné Thiébault1
- Bartholus Blancellus1