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 | Wed 22nd Nov 1815 | Promotion, Promotion | Cholmondeley, Rocksavage | CHOLMONDELEY George James |
| United Kingdom | George III | Mon 14th May 1804 | Promotion, Promotion, Promotion, Promotion | Clive, Herbert, Powis, Powis | CLIVE Edward |
| United Kingdom | George III | Mon 7th Sep 1812 | Promotion, Promotion, Promotion | Compton, Northampton, Wilmington | COMPTON Charles |
| United Kingdom | George III | Fri 19th Jun 1801 | Promotion, Promotion | Cranley, Onslow | ONSLOW George |
| United Kingdom | George III | Wed 19th Jul 1809 | Promotion, Promotion | Harrowby, Sandon | RYDER Dudley |
| United Kingdom | George III | Thu 13th Feb 1817 | Promotion, Promotion, Promotion | Hastings, Loudoun, Rawdon | RAWDON-HASTINGS Francis |
| United Kingdom | George III | Mon 22nd Jun 1801 | Promotion, Promotion | Marsham, Romney | MARSHAM Charles |
| United Kingdom | George III | Thu 10th Apr 1806 | Promotion | Orford | WALPOLE Horatio |
| Kingdom of Ireland | George III | Fri 12th Jan 1816 | Promotion in the peerage of Ireland | Ormond | BUTLER Walter |
| Kingdom of Ireland | George III | Tue 16th Jan 1816 | Hereditary peerage subsidiary to another created by the same letters patent, Promotion in the peerage of Ireland | Pevensey, Sheffield | BAKER HOLROYD John |
| United Kingdom | George III | Thu 13th Mar 1806 | Hereditary peerage | Ponsonby | PONSONBY William Brabazon |
| United Kingdom | George III | Wed 27th Nov 1816 | Hereditary peerage | Prudhoe | PERCY Algernon |
| United Kingdom | George III | Mon 15th Feb 1802 | Hereditary peerage | Redesdale | MITFORD John |
| Kingdom of Ireland | George III | Tue 25th Feb 1806 | Peerage of Ireland | Rendlesham | THELLUSSON Peter Isaac |
| United Kingdom | George III | Thu 1st Apr 1802 | New hereditary peerage: not a promotion | Rivers | PITT George |
| United Kingdom | George III | Fri 11th Aug 1815 | Hereditary peerage (already peer of Scotland) | Ross | BOYLE George |
| Kingdom of Ireland | George III | Mon 3rd Feb 1806 | Promotion in the peerage of Ireland | Rosse | HARMAN Laurence Harman |
| United Kingdom | George III | Tue 21st Apr 1801 | Promotion | Rosslyn | WEDDERBURN Alexander |
| United Kingdom | George III | Sat 19th Jun 1802 | Hereditary peerage | Sandys | HILL Mary |
| United Kingdom | George III | Thu 29th Jul 1802 | Hereditary peerage (already peer of Ireland) | Sheffield | BAKER HOLROYD John |