Name
- A'Court, William, 1st Baron Heytesbury, diplomat and politician, 1779-18601
- Abdy, Anne, wife of Sir W Abdy, and (1816) of Lord C Bentinck, fl 18161
- Abu'l-Hasan, Mirza, afterwards Khan; Persian Ambassador to Great Britain, fl 1809-18191
- Adam, William, MP1
- Addington, Henry, 1st Viscount Sidmouth, Prime Minister, 1757-184415
- Addington, John Hiley, PC, MP1
- Addington, Maryanne Ursula, daughter of Henry, 1st Viscount Sidmouth1
- Admiralty, 1708-19642
- Agar, Charles, 1st Earl of Normanton, Archbishop of Dublin, 1736-18091
- Alexander I, of Russia2
- Almeida de Mello e Castro, Joao, Conde das Galvas1
- Amherst, William Pitt, 1st Earl Amherst of Arracan, diplomatist and Governor-General of Bengal, 1773-18572
- Annesley, George, 2nd Earl of Mount Norris5
- Anson, George Edward, sec to Lord Melbourne and Prince Albert1
- Anstruther, Alexander, Knight, judge and legal writer, 1769-18191
- Anstruther, John, 1st Baronet Anstruther, of Fort William and 4th Baronet Anstruther, of Anstruther, politician and judge, 1753-18112
- Arbuthnot, Alexander, Bishop of Killaloe2
- Arbuthnot, Charles, diplomat and politician, 1767-18503
- Archdekin, Andrew, of Add MS 372881
- Armstrong, J-, Major; of Add MS 372813