Duke of Montagu

See also: Baron Montagu of Boughton

The title of Duke of Montagu has been created twice, firstly for the Montagu family of Boughton, Northamptonshire, and secondly for the Brudenell family, Earls of Cardigan. It was first created in the Peerage of England in 1705 for Ralph Montagu, 3rd Baron Montagu of Boughton, with the subsidiary title Marquess of Monthermer, but became extinct in 1749. The 1st Duke had been created Earl of Montagu and Viscount Monthermer in 1689. The Dukedom was then recreated in the Peerage of Great Britain in 1766 (together with the subsidiary title Marquess of Monthermer) for the late Duke's son-in-law George Brudenell, 4th Earl of Cardigan, who adopted the surname of Montagu. On his death in 1790 the dukedom and marquessate became extinct a second time, but the earldom passed to his brother, James Brudenell, 5th Earl of Cardigan.

Dukedom of Montagu
Creation date	5 November 1766
Creation	Second
Created by	King George III
Peerage	Peerage of Great Britain
First holder	George Montagu (né Brudenell), 4th Earl of Cardigan
Subsidiary titles	Marquess of Monthermer, Earl of Cardigan, Baron Brudenell of Stonton, Baron Montagu of Boughton
Status	Extinct
Extinction date	23 May 1790
Motto	Aequitas Actionum Regula

The dukedom is named after the Montagu family "of Boughton" in Northamptonshire, where the 1st Duke built the splendid and surviving Boughton House, which claimed descent from the ancient Anglo-Norman family of Montagu, Earls of Salisbury, which connection is however unproven. The earliest proven ancestor of the Montagu family of Boughton is Thomas Montagu (d.1516) of Hemington, Northamptonshire,^[1] the son of Richard Ladde (d.1484), "alias Montagu", of Hanging Houghton in Northamptonshire, whose family of Ladde is recorded in the deeds of that place from 1355.^[2] Richard Ladde "alias Montagu" was the father of Sir Edward Montagu, Lord Chief Justice (great-great grandfather of the 1st Duke), who purchased the estate of Boughton in 1528.^[3] It is suggested by the Complete Peerage^[4] that the Ladde family adopted the surname of Montagu due to "having to deal with some Montagu inheritance", i.e. dictated by the terms of a bequest from a member of that family, as was common practice, requiring the legatee to adopt the surname and arms of the legator, where a branch of a family had died out in the male line. Collins Peerage^[5] suggests that the Montagu family of Boughton was descended from James "Montagu", a natural son of Thomas Montagu, 4th Earl of Salisbury (1388-1428), the maternal grandfather of "Warwick the King-Maker", 16th Earl of Warwick, 6th Earl of Salisbury. The Montagu family of Boughton and its descendants use the coat of arms of Montagu, Earls of Salisbury, but differenced by a bordure sable, and quarters the arms of Monthermer, as did the Earls of Salisbury, but undifferenced.

Sir Edward Montagu of Boughton, Lord Chief Justice, was the ancestor of Montagu, Duke of Montagu, Montagu, Earls and Dukes of Manchester, Montagu, Earls of Sandwich and Montagu, Earls of Halifax.

Earls of Montagu (1689)

Other titles: Baron Montagu of Boughton (1621)

• Ralph Montagu, 3rd Baron Montagu of Boughton, 1st Earl of Montagu (1638–c. 1709) (created Duke of Montagu in 1705)

Dukes of Montagu, first Creation (1705)

Other titles: Earl of Montagu (1689) and Baron Montagu of Boughton (1621)

• Ralph Montagu, 1st Duke of Montagu (1638–c. 1709) was a courtier and diplomat
• John Montagu, 2nd Duke of Montagu (1690–1749), only son of the 1st Duke, died without male issue

Dukes of Montagu, second Creation (1766)

Other titles: Marquess of Monthermer (1766), Earl of Cardigan (1661), Baron Brudenell of Stonton, in the county of Leicester (1628) and Baron Montagu of Boughton, in the county Northampton (1786)

• George Montagu, 1st Duke of Montagu (1712–1790), son-in-law of the 2nd Duke
  • John Montagu, Marquess of Monthermer (1735–1770), only son of the 1st Duke, predeceased his father unmarried

Family tree

v t e Montagu family tree— Manchester: Earls and Dukes, Montagu: and Earls and Dukes, and Monthermer: Viscounts and Marquesses

Edward Montagu c. 1485–1557 Edward Montagu c. 1530–1602 Baron Montagu of Boughton, 1621 Viscount Mandeville and Baron Montagu of Kimbolton, of Kimbolton in the County of Huntingdon, 1620 Earl of Manchester, 1626 Edward Montagu c. 1562–1644 1st Baron Montagu of Boughton Henry Montagu c. 1563–1642 1st Earl of Manchester, Viscount Mandeville, and Baron Montagu of Kimbolton Sidney Montagu c. 1572–1644 Earl of Sandwich, Viscount Hinchingbrooke, Baron Montagu of St Neots, of St Neots in the County of Huntingdon, 1660 Edward Montagu 1616–1684 2nd Baron Montagu of Boughton Edward Montagu 1602–1671 2nd Earl of Manchester, Viscount Mandeville, and Baron Montagu of Kimbolton George Montagu 1622–1681 Edward Montagu 1625–1672 1st Earl of Sandwich, Viscount Hinchingbrooke, and Baron Montagu of St Neots Earl of Montagu and Viscount Monthermer, 1689 Duke of Montagu and Marquess of Monthermer (1st creation), 1705 Baron Halifax, 1700 Earl of Halifax (2nd creation) and Viscount Sunbury (2nd creation), 1714 Edward Montagu c. 1636–1665 Ralph Montagu 1638–1709 1st Duke of Montagu, Earl of Montagu, and Viscount Monthermer, 3rd Baron Montagu of Boughton Robert Montagu 1634–1683 3rd Earl of Manchester, Viscount Mandeville, and Baron Montagu of Kimbolton Edward Montagu 1649–1690 Charles Montagu 1661–1715 1st Earl of Halifax and Viscount Sunbury, 1st Baron Halifax Edward Montagu 1647/48–1688 2nd Earl of Sandwich, Viscount Hinchingbrooke, and Baron Montagu of St Neots Earldom of Halifax (2nd creation) and subsidiary titles extinct, 1715 Duke of Manchester, 1719 Earl of Halifax (3rd creation) and subsidiary titles (3rd creation), 1714 John Montagu 1690–1749 2nd Duke of Montagu, Earl of Montagu, and Viscount Monthermer, 4th Baron Montagu of Boughton Charles Edward Montagu c. 1662–1722 1st Duke of Manchester, 4th Earl of Manchester, Viscount Mandeville, and Baron Montagu of Kimbolton George Montagu 1685–1739 1st Earl of Halifax and Viscount Sunbury, 2nd Baron Halifax Edward Montagu 1670–1729 3rd Earl of Sandwich, Viscount Hinchingbrooke, and Baron Montagu of St Neots Dukedom of Montagu (1st creation) and subsidiary titles extinct, 1749 Duke of Montagu (2nd creation) and Marquess of Monthermer (2nd creation), 1766 Baron Montagu of Boughton (3rd creation), 1776 George Brudenell 1712–1790 Earl of Cardigan Duke of Montagu, Marquess of Monthermer, 1st Baron Montagu of Boughton Mary Montagu c. 1711–1775 Lady Isabella Montagu d. 1786 William Montagu 1700–1739 2nd Duke of Manchester, 5th Earl of Manchester, Viscount Mandeville, and Baron Montagu of Kimbolton Robert Montagu c. 1710–1762 3rd Duke of Manchester, 6th Earl of Manchester, Viscount Mandeville, and Baron Montagu of Kimbolton George Montagu-Dunk 1716–1771 2nd Earl of Halifax and Viscount Sunbury, 3rd Baron Halifax Edward Montagu 1692–1722 styled Viscount Hinchingbrooke John Montagu 1718–1792 4th Earl of Sandwich, Viscount Hinchingbrooke, and Baron Montagu of St Neots 🥪 Dukedom of Montagu (2nd creation) and subsidiary titles extinct, 1790 Earldom of Halifax (3rd creation) and subsidiary titles extinct, 1771 Baron Montagu of Boughton (2nd creation), 1762 John Montagu 1735–1770 Baron Montagu of Boughton, styled Marquess of Monthermer Elizabeth Scott 1743–1827 George Montagu 1737–1788 4th Duke of Manchester, 7th Earl of Manchester, Viscount Mandeville, and Baron Montagu of Kimbolton Lady Elizabeth Montague-Dunk d. 1768 John Montagu 1744–1814 5th Earl of Sandwich, Viscount Hinchingbrooke, and Baron Montagu of St Neots Baron Montagu of Boughton (2nd creation) extinct, 1770 Henry Montagu-Scott 1776–1845 2nd Baron Montagu of Boughton George Montagu 1763–1772 styled Viscount Mandeville William Montagu 1771–1843 5th Duke of Manchester, 8th Earl of Manchester, Viscount Mandeville, and Baron Montagu of Kimbolton John George Montagu 1767–1790 styled Viscount Hinchinbroke George John Montagu 1773–1818 6th Earl of Sandwich, Viscount Hinchingbrooke, and Baron Montagu of St Neots Baron Montagu of Boughton (3rd creation) extinct, 1845 George Montagu 1799–1855 6th Duke of Manchester, 9th Earl of Manchester, Viscount Mandeville, and Baron Montagu of Kimbolton William Drogo Montagu 1823–1890 7th Duke of Manchester, 10th Earl of Manchester, Viscount Mandeville, and Baron Montagu of Kimbolton Lord Robert Montagu 1825–1902 John William Montagu 1811–1884 7th Earl of Sandwich, Viscount Hinchingbrooke, and Baron Montagu of St Neots George Victor Drogo Montagu 1853–1892 8th Duke of Manchester, 11th Earl of Manchester, Viscount Mandeville, and Baron Montagu of Kimbolton Robert Acheson Cromie Montagu 1854–1931 Edward George Henry Montagu 1839–1916 8th Earl of Sandwich, Viscount Hinchingbrooke, and Baron Montagu of St Neots Victor Alexander Montagu 1841–1915 William Angus Drogo Montagu 1877–1947 9th Duke of Manchester, 12th Earl of Manchester, Viscount Mandeville, and Baron Montagu of Kimbolton John Michael Cromie Montagu 1881–1966 George Charles Montagu 1874–1962 9th Earl of Sandwich, Viscount Hinchingbrooke, and Baron Montagu of St Neots Alexander George Francis Drogo Montagu 1902–1977 10th Duke of Manchester, 13th Earl of Manchester, Viscount Mandeville, and Baron Montagu of Kimbolton Robert Alexander Montagu 1917–1996 Alexander Victor Edward Paulet Montagu 1906–1995 10th Earl of Sandwich, Viscount Hinchingbrooke, and Baron Montagu of St Neots Sidney Arthur Robin George Drogo Montagu 1929–1985 11th Duke of Manchester, 14th Earl of Manchester, Viscount Mandeville, and Baron Montagu of Kimbolton Angus Charles Drogo Montagu 1938–2002 12th Duke of Manchester, 15th Earl of Manchester, Viscount Mandeville, and Baron Montagu of Kimbolton John Edward Hollister Montagu b. 1943 11th Earl of Sandwich, Viscount Hinchingbrooke, and Baron Montagu of St Neots Alexander Charles David Drogo Montagu b. 1962 13th Duke of Manchester, 16th Earl of Manchester, Viscount Mandeville, and Baron Montagu of Kimbolton Lord Kimble William Drogo Montagu b. 1964 Lady Emma Louise Eveleen Montagu Hodgkinson 1965–2014 Michael Anthony Montagu b. 1955 Luke Timothy Charles Montagu b. 1969 styled Viscount Hinchingbrooke Heir presumptive to the dukedom of Manchester Heir apparent to the earldom of Sandwich

References

1. Appendix D of Cokayne, G. E.; H. A. Doubleday & Lord Howard de Walden, eds. (1936). The Complete Peerage, or a history of the House of Lords and all its members from the earliest times (Moels to Nuneham), Vol. 9 (2nd ed.). London: The St. Catherine Press
2. Appendix D, Complete Peerage, Vol.9
3. 'Weekley', in An Inventory of the Historical Monuments in the County of Northamptonshire, Volume 2, Archaeological Sites in Central Northamptonshire (London, 1979), pp. 152–164 [1]
4. Appendix D, Complete Peerage, Vol.9
5. Collins Peerage, Vol.II, p.42,