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 27th Nov 1801 | Hereditary peerage, Hereditary peerage, Hereditary peerage | Arklow, Inverness, Sussex | Augustus Frederick |
| United Kingdom | George III | Mon 14th May 1804 | Promotion, Promotion, Promotion, Promotion | Clive, Herbert, Powis, Powis | CLIVE Edward |
| United Kingdom | George III | Fri 11th Apr 1806 | Promotion, Promotion | Grey, Howick | GREY Charles |
| United Kingdom | George III | Tue 23rd Jun 1801 | Hereditary peerage | Grey | GREY Charles |
| United Kingdom | George III | Fri 26th Jun 1801 | Promotion, Promotion | Grey de Wilton, Wilton | EGERTON Thomas Grey |
| United Kingdom | George III | Fri 24th Nov 1815 | Promotion, Promotion | Grimston, Verulam | GRIMSTON James Walter |
| United Kingdom | George III | Fri 11th Aug 1815 | Hereditary peerage (already peer of Ireland) | Grinstead | COLE John Willoughby |
| United Kingdom | George III | Mon 7th Sep 1812 | Promotion, Promotion | Harewood, Lascelles | LASCELLES Edward |
| United Kingdom | George III | Fri 11th Aug 1815 | Hereditary peerage | Harris | HARRIS 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 | Tue 16th Jan 1816 | New hereditary peerage: not a promotion | Hill | HILL Rowland |
| United Kingdom | George III | Tue 17th May 1814 | Hereditary peerage | Hill | HILL Rowland |
| United Kingdom | George III | Fri 3rd Feb 1809 | Hereditary peerage (already peer of Scotland) | Hopetoun | HOPE James |
| Kingdom of Ireland | George III | Tue 19th Oct 1819 | Peerage of Ireland | Howden | CRADOCK John Francis |
| United Kingdom | George III | Wed 16th Dec 1801 | Hereditary peerage | Hutchinson | HELY HUTCHINSON John |
| United Kingdom | George III | Sat 17th Sep 1803 | New hereditary peerage: not a promotion | Keith | ELPHINSTONE George Keith |
| United Kingdom | George III | Tue 15th Dec 1801 | Hereditary peerage (already peer of Ireland) | Keith | ELPHINSTONE George Keith |
| United Kingdom | George III | Wed 1st Jun 1814 | Promotion | Keith | ELPHINSTONE George Keith |