| Ammon (Barony) |
Charles George Ammon - Mon 31st Jan 1944
|
2 April 1960 |
- |
| Amory (Viscountcy) |
Derick Heathcoat Amory - Thu 1st Sep 1960
|
19 January 1981 |
- |
| Ampthill (Barony) |
Odo William Leopold Russell - Fri 11th Mar 1881
|
- |
- |
| Amulree (Barony) |
William Warrender Mackenzie - Mon 22nd Jul 1929
|
15 December 1983 |
- |
| Amwell (Barony) |
Frederick Montague - Wed 16th Jul 1947
|
- |
- |
| Andover (Viscountcy) |
Thomas Howard - Sun 23rd Jan 1622
|
- |
- |
| of Anglesey (Earldom) |
Christopher Villiers - Tue 18th Apr 1623
|
- |
- |
| Annaly (Barony) |
Henry White - Wed 19th Aug 1863
|
- |
- |
| Anslow (Barony) |
Tonman Mosley - Wed 28th Jun 1916
|
20 August 1933 |
- |
| Anson (Barony) |
George Anson - Tue 13th Jun 1747
|
6 June 1762 |
- |
| Anson (Viscountcy) |
Thomas Anson - Mon 17th Feb 1806
|
- |
- |
| Apsley (Barony) |
Henry Bathurst - Thu 24th Jan 1771
|
- |
- |
| of Arbuthnott (Viscountcy) |
Robert Arbuthnott - Sun 17th Nov 1641
|
- |
- |
| Archer (Barony) |
Thomas Archer - Fri 14th Jul 1747
|
- |
- |
| Archibald (Barony) |
George Archibald - Tue 12th Jul 1949
|
27 February 1996 |
- |
| Ardilaun (Barony) |
Arthur Edward Guinness - Sat 1st May 1880
|
20 January 1915 |
- |
| Arklow (Barony) |
Augustus Frederick - Fri 27th Nov 1801
|
21 April 1843 |
- |
| Arklow (Barony) |
Leopold George Duncan Albert - Tue 24th May 1881
|
28 March 1919 |
- |
| Arlington (Barony) |
Henry Bennet - Sat 14th Mar 1665
|
- |
- |
| Armaghdale (Barony) |
John Brownlee Lonsdale - Thu 17th Jan 1918
|
8 June 1924 |
- |