George III , monarch of the United Kingdom
1 January 1801 until 29 January 1820.
Letters Patent for this reign
| Kingdom | Reign | Issued on | Peerage types | Peerages | Issued to |
|---|---|---|---|---|---|
| United Kingdom | George III | Thu 28th May 1801 | Hereditary peerage | Abercromby | ABERCROMBY Mary Anne |
| United Kingdom | George III | Sat 25th Nov 1815 | Promotion, Promotion | Adbaston, Whitworth | WHITWORTH Charles |
| United Kingdom | George III | Wed 12th Nov 1806 | Hereditary peerage (already peer of Scotland) | Ailsa | KENNEDY Archibald |
| United Kingdom | George III | Mon 27th Nov 1815 | Promotion, Promotion | Alford, Brownlow | CUST John |
| United Kingdom | George III | Fri 22nd May 1801 | Hereditary peerage | Alvanley | ARDEN Richard Pepper |
| United Kingdom | George III | Tue 4th Jul 1815 | Promotion | Anglesey | PAGET Henry William |
| United Kingdom | George III | Mon 17th Feb 1806 | Hereditary peerage, Hereditary peerage | Anson, Soberton | ANSON Thomas |
| United Kingdom | George III | Wed 28th Jul 1802 | Hereditary peerage (already peer of Ireland) | Arden | PERCEVAL Charles George |
| United Kingdom | George III | Fri 21st Feb 1806 | Hereditary peerage (already peer of Scotland) | Ardrossan | MONTGOMERIE Hugh |
| United Kingdom | George III | Fri 27th Nov 1801 | Hereditary peerage, Hereditary peerage, Hereditary peerage | Arklow, Inverness, Sussex | Augustus Frederick |
| Kingdom of Ireland | George III | Thu 1st Jan 1801 | Promotion in the peerage of Ireland | Avonmore | YELVERTON Barry |
| Kingdom of Ireland | George III | Sat 13th Jan 1816 | Promotion in the peerage of Ireland, Hereditary peerage subsidiary to another created by the same letters patent | Bantry, Berehaven | WHITE Richard |
| Kingdom of Ireland | George III | Sat 3rd Jan 1801 | Promotion in the peerage of Ireland | Bantry | WHITE Richard |
| United Kingdom | George III | Wed 1st May 1805 | Hereditary peerage | Barham | MIDDLETON Charles |
| United Kingdom | George III | Wed 26th Oct 1803 | Promotion | Bath | MURRAY-PULTENEY Henrietta Laura |
| United Kingdom | George III | Wed 26th Feb 1806 | Hereditary peerage | Beauchamp | LYGON William |
| United Kingdom | George III | Fri 1st Dec 1815 | Promotion, Promotion | Beauchamp, Elmley | LYGON William |
| United Kingdom | George III | Tue 17th May 1814 | Hereditary peerage | Beresford | BERESFORD William Carr |
| Kingdom of Ireland | George III | Fri 12th Jan 1816 | Promotion in the peerage of Ireland | Blesington | GARDINER Charles John |