Dukedom

All Ranks

Dukedom Peerages

Title Letters patent Extinct Merged into crown
of Leinster (Dukedom) Meinhardt Schomberg - Mon 3rd Mar 1692 5 July 1719 -
of Leinster (Dukedom) James Fitzgerald - Wed 26th Nov 1766 - -
of Lennox (Dukedom) Charles Lennox - Mon 9th Sep 1675 - -
of Manchester (Dukedom) Charles Montagu - Fri 28th Apr 1719 - -
of Marlborough (Dukedom) John Churchill - Thu 14th Dec 1702 - -
of Monmouth (Dukedom) James Scott - Wed 14th Feb 1663 - -
of Montagu (Dukedom) Ralph Montagu - Tue 14th Apr 1705 6 July 1749 -
of Montagu (Dukedom) George Montagu - Wed 5th Nov 1766 23 May 1790 -
of Montrose (Dukedom) James Graham - Sun 24th Apr 1707 - -
of Munster (Dukedom) Ehrengard Melusine von der Schulenburg - Thu 16th Jul 1716 10 May 1743 -
of Newcastle under Line (Dukedom) Thomas Pelham Holles - Wed 17th Nov 1756 25 December 1988 -
of Newcastle upon Tyne (Dukedom) William Cavendish - Mon 16th Mar 1665 26 July 1691 -
of Newcastle upon Tyne (Dukedom) John Holles - Fri 14th May 1694 15 July 1711 -
of Newcastle upon Tyne (Dukedom) Thomas Pelham Holles - Sun 11th Aug 1715 17 November 1768 -
of Norfolk (Dukedom) John Howard - Sat 28th Jun 1483 - -
of Northumberland (Dukedom) George FitzRoy - Tue 6th Apr 1683 28 June 1716 -
of Northumberland (Dukedom) Hugh Percy - Wed 22nd Oct 1766 - -
of Ormond (Dukedom) James Butler - Mon 9th Nov 1682 20 August 1715 -
of Ormond (Dukedom) James Butler - Wed 30th Mar 1661 17 December 1758 -
of Portland (Dukedom) Henry Bentinck - Mon 6th Jul 1716 30 July 1990 -