Family tree of the Earls and Dukes of Northumberland and Earls of Beverley
King Henry III
(1207–1272)
Baron Percy of Alnwick (2nd creation), 1299
Henry de Percy
(1273–1314)
8th Baron Percy of Topcliffe, 1st Baron Percy		Edmund Crouchback
(1245–1296)
Earl of Leicester, Earl of Lancaster, Earl of Derby
Henry de Percy
(1300–1351)
9th Baron Percy of Topcliffe, 2nd Baron Percy		Henry
(c. 1281–1345)
Earl of Leicester, Earl of Lancaster, Earl of Derby
Henry de Percy
(1320–1368)
3rd Baron Percy		Mary of Lancaster
(c. 1320–1321–1362)
Earl of Northumberland (1st creation), 1377Earl of Worcester
Henry Percy
(1341–1408)
1st Earl of Northumberland, 4th Baron Percy		Thomas Percy
(1343–1403)
Earl of Worcester		John of Gaunt
(1340–1399)
Duke of Lancaster, Earl of Leicester, Earl of Lancaster, Earl of Derby, Earl of Richmond
(attainted 1405)
Henry Percy "Hotspur"
(c. 1365–1403)		Joan Beaufort
(c. 1379–1440)		John Beaufort
(c. 1370–1410)
Earl of Somerset
Earl of Northumberland (2nd creation), 1416
Henry Percy
(1394–1455)
2nd Earl of Northumberland		Eleanor Neville
(c. 1398–1472)		Richard Neville
(1400–1460)
Earl of Salisbury		John Beaufort
(1404–1444)
Duke of Somerset
Earl of Northumberland (3rd creation), 1464
Henry Percy
(1421–1461)
3rd Earl of Northumberland		John Neville
(c. 1431–1471)
Earl of Northumberland		Margaret Beaufort
(1401/1403–1449)
(forfeit 1461)(released 1470)
(restored 1470)
Henry Percy
(1449–1489)
4th Earl of Northumberland		King Henry VII
(1457–1509)
Henry Algernon Percy
(1478–1527)
5th Earl of Northumberland		Mary Tudor
(Queen of France)
(1496–1533)
m.(2) Charles Brandon
Duke of Suffolk		Margaret Tudor
(1489–1541)
Duke of Northumberland (1st creation), 1551
Henry Percy
(1502–1537)
6th Earl of Northumberland		Thomas Percy
(c. 1504–1537)		John Dudley
(1504–1553)
1st Duke of Northumberland		Frances Brandon
(1517–1559)
m. Henry Grey
Duke of Suffolk		James V of Scotland
(1512–1542)
(attainted 1537)(extinct 1553)
Earl of Northumberland (2nd creation) restored and Baron Percy of Alnwick (3rd creation), 1557
Thomas Percy
(1528–1572)
7th Earl of Northumberland, 1st Baron Percy		Henry Percy
(1532–1585)
8th Earl of Northumberland, 2nd Baron Percy		Guildford Dudley
(c. 1535–1554)		Jane Grey
(c. 1537–1554)		Lady Katherine Grey
(1540–1568)
m. Edward Seymour
Earl of Hertford		Mary, Queen of Scots
(1542–1587)
Henry Percy
(1564–1632)
9th Earl of Northumberland, 3rd Baron Percy		Edward Seymour
(1561–1612)
Viscount Beauchamp		King James VI and I
(1566–1625)
Algernon Percy
(1602–1668)
10th Earl of Northumberland, 4th Baron Percy		Francis Seymour
(c. 1590–1664)
Baron Seymour of Trowbridge		King Charles I
(1600–1649)
Josceline Percy
(1644–1670)
11th Earl of Northumberland, 5th Baron Percy		Charles Seymour
(c. 1621–1665)
Baron Seymour of Trowbridge		King Charles II
(1630–1685)
Earldom of Northumberland and Barony Percy extinct, 1670
Earl of Northumberland (4th creation), Viscount Falmouth (1st creation), and Baron of Pontefract, 1674
Duke of Northumberland (2nd creation), 1683
Elizabeth Seymour
(1667–1722)		Charles Seymour
(1662–1748)
Duke of Somerset		George FitzRoy
(1665–1716)
Duke of Northumberland, Earl of Northumberland, Viscount Falmouth, Baron of Pontefract
Earldom of Northumberland and Dukedom of Northumberland extinct, 1716
Baron Percy (4th creation) created erroneously, 1722
Earl of Northumberland (5th creation) and Baron Warkworth, 1749
Algernon Seymour
(1684–1750)
Duke of Somerset, 1st Earl of Northumberland and 1st Baron Warkworth, 1st Baron Percy
Duke of Northumberland (3rd creation), 1766
Lord Lovaine, Baron of Alnwick in the County of Northumberland
Hugh Percy formerly Hugh Smithson
(1714–1786)
1st Duke of Northumberland, 2nd Earl of Northumberland, 2nd Baron Warkworth, 1st Baron Lovaine, 4th Baronet Smithson		Elizabeth Seymour
(1716–1776)
2nd Baroness Percy suo jure
Earl of Beverley, 1790
Hugh Percy
(1742–1817)
2nd Duke of Northumberland, 3rd Baron Warkworth, 3rd Baron Percy		Algernon Percy
(1750–1830)
1st Earl of Beverley, 2nd Baron Lovaine
Baron Prudhoe, of Prudhoe Castle in the County of Northumberland, 1814
Hugh Percy
(1785–1847)
3rd Duke of Northumberland, 4th Baron Warkworth, 4th Baron Percy		Emily Frances Percy
(1789–1844)		Algernon Percy
(1792–1865)
4th Duke of Northumberland, 5th Baron Warkworth, 1st Baron Prudhoe, 5th Baron Percy		George Percy
(1778–1867)
5th Duke of Northumberland, 2nd Earl of Beverley, 6th Baron Warkworth, 3rd Baron Lovaine
Barony Prudhoe extinct, 1865
George Augustus Frederick John Murray
(1814–1864)
6th Duke of Atholl, 11th Baron Strange		Algernon George Percy
(1810–1899)
6th Duke of Northumberland, 7th Baron Warkworth, 4th Baron Lovaine
John James Hugh Henry Stewart-Murray
(1840–1917)
7th Duke of Atholl, 12th Baron Strange, 6th Baron Percy		Henry George Percy
(1846–1918)
7th Duke of Northumberland, 8th Baron Warkworth, 5th Baron Lovaine
John George Stewart-Murray
(1871–1942)
8th Duke of Atholl, 13th Baron Strange, 7th Baron Percy		James Thomas Stewart-Murray
(1879–1957)
9th Duke of Atholl, 14th Baron Strange, 8th Baron Percy		Alan Ian Percy
(1880–1930)
8th Duke of Northumberland, 9th Baron Warkworth, 6th Baron Lovaine
Henry George Alan Percy
(1912–1940)
9th Duke of Northumberland, 10th Baron Warkworth, 7th Baron Lovaine		Hugh Algernon Percy
(1914–1988)
10th Duke of Northumberland, 11th Baron Warkworth, 8th Baron Lovaine, 9th Baron Percy
Henry Alan Walter Richard Percy
(1953–1995)
11th Duke of Northumberland, 12th Baron Warkworth, 9th Baron Lovaine, 10th Baron Percy		Ralph George Algernon Percy
(b. 1956)
12th Duke of Northumberland, 13th Baron Warkworth, 10th Baron Lovaine, 11th Baron Percy
George Percy
(b. 1984)
styled Earl Percy
Heir apparent to the Dukedom of Northumberland
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