Name
- Adams, John, fl 16541
- Aiton, Robert, Knight, poet and Secretary to Anne, Queen of James I, 1570-16381
- Aitzema, Lieuwe, Dutch historian and diplomat, 1600-16691
- Aldworth, John, English Consul at Marseilles1
- Alphonso VI, of Portugal1
- Anne, Queen of Great Britain and Ireland, 1665-17141
- Anton Günther, Count of Oldenburg1
- Apericio, Bernardo, of Madrid1
- Aquilius, Thilman, fl 1651-16521
- Arden, John, merchant1
- Astle, Thomas, archivist and collector of books and manuscripts, 1735-18031
- Augier, René, British Resident in Paris1
- Avery, Joseph, English agent to the Hanse towns1
- Babington, Anthony, conspirator, 1561-15861
- Bacon, Nathaniel, Virginian colonist1
- Ballard, Thomas, commissioned by General Sir Charles Morgan, fl 16291
- Bancroft, John, doorkeeper, House of Lords; formerly servant to Duke of Marlborough, 1684-17621
- Barnard, Edward, correspondent of Walter Strickland of the Council of State, London, fl 16531
- Barret, holder of letter cipher-key, fl mid 17th century1
- Barry, Robert, Roman Catholic Bishop of Cork and Cloyne, 1588-16621