Former Owner
- Acton Griscom1
- Adalbert von Lanna1
- Adam Clarke1
- Admont Abbey1
- Adrianus David Schinkel1
- Adán Inquaci1
- Alexander Peckover, 1st Baron Peckover1
- Alexis Hübner1
- Alfred Cock1
- Alfred E. Hamill1
- Alfred Morrison1
- Alison Johnstone1
- Andrea della Valle1
- André Rooryck1
- Anne Claude Philippe, Comte de Caylus1
- Anne de Graville1
- Anne of Brittany1
- Anthony Askew1
- Arthur Brölemann1
- Arthur Thomas Bannister1