Name
- Wesley, William, afterwards Wellesley afterw Wellesley-Pole Baron Maryborough, 3rd Earl of Mornington2
- A'Court, Charles Ashe, Knight, army officer and politician, 1785-18611
- Acheson, Archibald, 2nd Earl of Gosford, politician and colonial governor, 1776-18491
- Acheson, Arthur, 1st Earl of Gosford, politician and courtier, c 1742-18071
- Acton, John Francis Edward, 6th Baronet, Lieutenant-General, Prime Minister of Naples, 1736-18111
- Adam, Frederick, Knight, General, 1781-18531
- Addington, Henry, 1st Viscount Sidmouth, Prime Minister, 1757-18441
- Addington, John Hiley, PC, MP1
- Adlerberg, Carl Gustaf, Swedish diplomatist1
- Adolphus Frederick, Duke of Cambridge, son of George III, 1774-18501
- Agnew, Patrick Alexander Vans, East India Company official, 1822-18481
- Aguivre Lezeaga, Joaquin de, Spanish captain1
- Alexander I, of Russia1
- Army of Austria1
- Army of Bavaria1
- Army of Hanover1
- Army of Sweden1
- Army of Turkey1
- Army of the Netherlands1
- Atkins, David, Captain RN1