Montagu
- Sir Edward Montagu (c. 1485-1557) Lord Chief Justice of the Common Pleas. Son of Thomas Montague of Hemington (d.1516). The parentage of this Thomas is not proved, though a fabulous descent from Simon, stated to have been the brother of John Montagu, 3rd Earl of Salisbury, is generally attributed to him. It is stated (1812) by Sir Egerton Brydges, in Collins, vol. ii, p. 42, "that the late Mr. Thorpe suspected this family to be descended from James Montagu, a natural son of Thomas the [4th and] last Earl of Salisbury".The bordure round the arms of the present family favours the idea. Other sources states that they descended from Richard Montagu alias Ladde, a yeoman or husbandman, living in 1471. He was the father of Sir Edward Montagu of Boughton Castle .
Sir Edward Montagu of Boughton
- Sir Edward Montagu of Boughton (1530-1601), married Elizabeth Harrington of Exton (1545-1618):
Children:
- Edward Montagu, 1st Baron Montagu, ancestor of the Dukes of Montagu.
- Sir Walter Montagu.
- Sir Henry Montagu, 1st Earl of Manchester, ancestor of the Dukes of Manchester.
- Sir Charles Montagu.
- James Montagu, Bishop of Winchester.
- Sir Sidney Montagu, ancestor of the Earls of Sandwich.
Barons Montagu of Boughton in the Peerage of England, first creation (1621-1749)
Earls of Montagu in the Peerage of England(1689-1749)
Dukes of Montagu in the Peerage of England (1705-1749)
Barons Montagu of Boughton
- Edward Montagu, 1st Baron Montagu of Boughton (1560–1644)
- Edward Montagu,2nd Baron Montagu of Boughton (1616–1684)
1st Duke of Montagu
- Ralph Montagu, 1st Duke of Montagu, Marquess of Monthermer, 1st Earl of Montagu and Viscount Monthermer, 3rd Baron Montagu of Boughton (1638–c. 1709)
2nd Duke of Montagu KG
- John Montagu, 2nd Duke of Montagu KG (1690-1749)
2nd Duke of Montagu had two surviving daughters by Lady Mary Churchill, daughter of John Churchill, 1st Duke of Marlborough:
- Isabella Montagu, (1708-1786). Married firstly William Montagu, 2nd Duke of Manchester and secondly Edward Hussey-Montagu, 1st Earl of Beaulieu.
- Mary Montagu (c. 1711-1775). Married George Brudenell, 4th Earl of Cardigan, later Duke of Montagu.
Baron Montagu of Boughton in the Peerage of Great Britain, second creation (1762-1770)
Duke of Montagu in the Peerage of Great Britain, Second Creation (1766-1790)
Barons Montagu of Boughton in the Peerage of Great Britain, third creation (1786-1845)
1st Baron Montagu of Boughton
- John Montagu, 1st Baron Montagu of Boughton, Marquess of Monthermer, Lord Brudenell (1735-1770) son of George Brudenell, 4th Earl of Cardigan.
1st Duke of Montagu and 4th Earl of Cardigan KG
- George Montagu (Brudenell), 1st Duke of Montagu, Marquess of Monthermer, 4th Earl of Cardigan, Baron Brudenell KG (1712–1790) created 1st Baron Montagu of Boughton, (with a special remainder to the younger sons of his daughter, who had married the 3rd Duke of Buccleuch).
2nd Baron Montagu of Boughton
- Henry James Montagu-Scott, 2nd Baron Montagu of Boughton, grandson of son of George Montagu, 1st Duke of Montagu(1776–1845)
Baron Beaulieu in the Peerage of Great Britain (1762–1802)
Earls Beaulieu in the Peerage of Great Britain (1784–1802)
1st Earl Beaulieu KB
- Edward Hussey-Montagu, 1st Earl Beaulieu, 1st Baron Beaulieu KB (1721-1802)
Viscounts Mandeville in the Peerage of England (1620)
Earls of Manchester in the Peerage of England (1626)
Dukes of Manchester in the Peerage of Great Britain (1719)
Earls of Manchester
- Sir Henry Montagu, 1st Earl of Manchester, 1st Viscount Mandeville and Baron Montagu of Kimbolton (ca. 1563 – 1642) son of Edward Montagu of Boughton and grandson of Sir Edward Montagu.
- Edward Montagu, 2nd Earl of Manchester KG (1602 – 1671)
- Robert Montagu, 3rd Earl of Manchester (1634 – 1683)
Dukes of Manchester
- Charles Edward Montagu, 1st Duke of Manchester, 4th Earl of Manchester (c. 1662 – 1722)
- William Montagu, 2nd Duke of Manchester, KB (1700 – 1739)
- Robert Montagu, 3rd Duke of Manchester (c. 1710 – 1762)
- George Montagu, 4th Duke of Manchester (1737 – 1788)
- William Montagu, 5th Duke of Manchester (1771 – 1843)
- George Montagu, 6th Duke of Manchester (1799 – 1855)
- William Drogo Montagu, 7th Duke of Manchester, KP (1823 – 1890)
- George Victor Drogo Montagu, 8th Duke of Manchester (1853 – 1892)
- William Angus Drogo Montagu, 9th Duke of Manchester (1877 – 1947)
- Alexander George Francis Drogo Montagu, 10th Duke of Manchester (1902 – 1977)
- Sidney Arthur Robin George Drogo Montagu, 11th Duke of Manchester (1929 – 1985)
- Angus Charles Drogo Montagu, 12th Duke of Manchester (1938 – 2002)
- Alexander Charles David Drogo Montagu, 13th Duke of Manchester (b. 1962)
Earls of Sandwich in the Peerage of England (1660)
Earls of Sandwich
- Edward Montagu, 1st Earl of Sandwich, Viscount Hinchingbrooke and Baron Montagu of St Neots (1625–1672) youngest brother of Henry Montagu, 1st Earl of Manchester and Edward Montagu, 1st Baron Montagu of Boughton.
- Edward Montagu, 2nd Earl of Sandwich (1644–1689)
- Edward Montagu, 3rd Earl of Sandwich (1670–1729)
- John Montagu, 4th Earl of Sandwich (1718–1792)
- John Montagu, 5th Earl of Sandwich (1744–1814)
- George John Montagu, 6th Earl of Sandwich (1773–1818)
- John William Montagu, 7th Earl of Sandwich (1811–1884)
- Edward George Henry Montagu, 8th Earl of Sandwich (1839–1916)
- George Charles Montagu, 9th Earl of Sandwich (1874–1962)
- (Alexander) Victor Edward Paulet Montagu, 10th Earl of Sandwich (1906–1995) (disclaimed 1964)
- John Edward Hollister Montagu, 11th Earl of Sandwich (b. 1943)
Baron Halifax in the Peerage of England (1700-1739)
Earl of Halifax in the Peerage of Great Britain, First Creation (1714-1715)
Earl of Halifax in the Peerage of Great Britain, Second Creation (1715-1771)
Earls of Halifax
- Charles Montagu, 1st Earl of Halifax and Viscount Sunbury, 1st Baron Halifax of Halifax KG (1661 – 1715) son of George Montagu, fifth son of 1st Earl of Manchester. Barony of Halifax with a special remainder, failing heirs male of his body, to his nephew George Montagu, of Horton.
- George Montagu, 1st Earl of Halifax and Viscount Sunbury, 2nd Baron Halifax of Halifax (c. 1684 – 1739)
- George Montagu-Dunk, 2nd Earl of Halifax, 3rd Baron Halifax of Halifax KG ( 1716–1771)
Barons Mount Stuart in the Peerage of Great Britain (1761)
Sir Edward Wortley Montagu
1st Baroness Mount Stuart
- Mary Stuart (nee Wortley Montagu), 1st Baroness Mount Stuart (1718–1794) daughter of Sir Edward Wortley Montagu, himself son of Sidney Wortley Montagu and grandson of Edward Montagu, 1st Earl of Sandwich.
- John Crichton-Stuart, 4th Earl of Bute, 2nd Baron Mount Stuart (1744–1814) See Stuart of Bute