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House of Leveson-Gower
Incorporating the families of Sutherland, Granville, Carteret, Thynne, Egerton, Mackenzie and Cust
House of Leveson-Gower
Gower, later Leveson-Gower of Sittenham, Baronets (1620)
Barons Gower (1703)
Earls Gower (1746)
Marquesses of Stafford (1786)
Dukes of Sutherland (1833)
Earls of Ellesmere (1846)
Viscounts Granville (1815)
Earls Granville, second creation (1833)
Earls of Cromartie (1861)















House of Sutherland
Earls of Sutherland (c. 1230)



House of Granville
Earls of Bath (1661-1711)
Baron Granville of Potheridge (1702-1707)
Baron Lansdowne (1712-1734)



House of Carteret
Carteret of Metesches, Jersey, Baronets (1645–1776)
Barons Carteret, first creation (1681–1776)
Earls Granville, first creation (1715–1776)
House of Thynne
Thynne of Cause Castle, Baronets (1641)
Viscounts Weymouth (1682)
Marquesses of Bath (1789)
Barons Carteret, second creation (1784)





House of Egerton
Viscounts Brackley (1616-1829)
Earls of Bridgewater (1617-1829)
Dukes of Bridgewater (1720-1803)

House of Cust
Cust of Stamford, Baronets (1677)
Barons Brownlow (1776)
Earls Brownlow (1815-1921)
Sir Richard Cust, 1st Baronet (1622–1700)
Sir Richard Cust, 2nd Baronet (1680–1734), married Anne Brownlow,daughter of Sir William Brownlow, 4th Baronet., sister and sole heiress of John Brownlow, 1st Viscount Tyrconnel.
Sir John Cust, 3rd Baronet (1718–1770)
Sir Brownlow Cust, 1st Baron Brownlow, 4th Baronet (1744–1807)
John Cust, 1st Earl Brownlow, Viscount Alford, Baron Brownlow (1779–1853), married Sophia Hume, daughter of Sir Abraham Hume, 2nd Baronet, of Wormleybury and Amelia Egerton, great-granddaughter of John Egerton, 3rd Earl of Bridgewater.
John Hume Egerton, Viscount Alford (1812–1851), in 1849 assumed by Royal license the surname of Egerton in lieu of Cust, on succeeding to the Bridgwater estates through his mother.
John William Spencer Brownlow Egerton-Cust, 2nd Earl Brownlow(1842–1867)
Adelbert Wellington Brownlow-Cust, 3rd Earl Brownlow (1844–1921)
Adelbert Salisbury Cockayne Cust, 5th Baron Brownlow (1867–1927)
Peregrine Francis Adelbert Cust, 6th Baron Brownlow (1899–1978)
Edward John Peregrine Cust, 7th Baron Brownlow (b. 1936)
Brownlow of Belton, Baronets ( 1641-1678)
Brownlow of Humby, Baronets (1641-1754)
Viscount Tyrconnel, in the Peerage of Ireland (1718-1754)
Sir John Brownlow of Belton, 1st Baronet (c. 1595-1678)
Sir William Brownlow of Humby, 1st Baronet ( c. 1595–1666),younger brother of Sir John Brownlow of Belton.
Sir Richard Brownlow, 2nd Baronet (d. 1668)
Sir John Brownlow, 3rd Baronet ( 1659– 1697)
Sir William Brownlow, 4th Baronet ( 1665– 1701)
Sir John Brownlow, 1st Viscount Tyrconnel, 5th Baronet ( 1690– 1754)






