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 | Fri 1st Dec 1815 | Promotion, Promotion | Beauchamp, Elmley | LYGON William |
| Kingdom of Ireland | George III | Mon 15th Jan 1816 | Hereditary peerage subsidiary to another created by the same letters patent, Promotion in the peerage of Ireland | Caher, Glengall | BUTLER Richard |
| United Kingdom | George III | Mon 9th Nov 1807 | Hereditary peerage (already peer of Scotland), Hereditary peerage (already peer of Scotland) | Cathcart, Greenock | CATHCART William |
| United Kingdom | George III | Mon 19th Apr 1802 | Hereditary peerage | Ellenborough | LAW Edward |
| Kingdom of Ireland | George III | Thu 1st Jan 1801 | Promotion in the peerage of Ireland | Ely | TOTTENHAM LOFTUS Charles |
| Kingdom of Ireland | George III | Mon 15th Jan 1816 | Promotion in the peerage of Ireland | Ennismore and Listowel | HARE William |
| United Kingdom | George III | Mon 10th Feb 1806 | Hereditary peerage | Erskine | ERSKINE Thomas |
| United Kingdom | George III | Wed 4th Feb 1801 | Promotion | Exeter | CECIL Henry |
| United Kingdom | George III | Wed 1st Jun 1814 | Hereditary peerage | Exmouth | PELLEW Edward |
| United Kingdom | George III | Tue 10th Dec 1816 | Promotion | Exmouth | PELLEW Edward |
| United Kingdom | George III | Fri 11th Aug 1815 | Hereditary peerage (already peer of Ireland) | Foxford | PERY Edmund Henry |
| Kingdom of Ireland | George III | Fri 12th Jan 1816 | Promotion in the peerage of Ireland | Frankfort de Montmorency | DE MONTMORENCY Lodge Evans |
| United Kingdom | George III | Mon 9th Nov 1807 | Hereditary peerage | Gambier | GAMBIER James |
| United Kingdom | George III | Thu 27th Nov 1806 | Hereditary peerage (already peer of Ireland) | Gardner | GARDNER Alan |
| Kingdom of Ireland | George III | Sat 30th Jan 1819 | Peerage of Ireland | Garvagh | CANNING George |
| United Kingdom | George III | Sat 16th Jul 1814 | Hereditary peerage (already peer of Scotland) | Gordon | GORDON George |
| Kingdom of Ireland | George III | Tue 16th Jan 1816 | Promotion in the peerage of Ireland | Gort | PRENDERGAST SMYTH John |
| Kingdom of Ireland | George III | Sat 1st Feb 1806 | Promotion in the peerage of Ireland | Gosford | ACHESON Arthur |
| United Kingdom | George III | Mon 24th Feb 1806 | Hereditary peerage (already peer of Ireland) | Granard | FORBES George |
| United Kingdom | George III | Sat 12th Aug 1815 | Hereditary peerage | Granville | LEVESON GOWER Granville |