Prominent members of the family include: • (d. 1096), 1st
feudal baron of
Topcliffe, Yorkshire, • Agnes de Percy (1134–1205), married
Joscelin of Louvain (d. 1180). He was a son of
Godfrey I, Count of Louvain of the
House of Louvain, ancestor of the
Dukes of Brabant ,
House of Hesse, and so the
Mountbattens) either by his second wife,
Clementia of Burgundy, or by a mistress (see
Dukes of Brabant family tree). He was also brother-in-law to
King Henry I, whose second wife was Joscelin's half-sister
Adeliza of Louvain. •
Richard de Percy (d. 1244), 5th feudal baron of Topcliffe, signatory to
Magna Carta. Died childless. Succeeded his elder brother Henry de Percy (d. 1198), the 4th Baron Topcliffe, whose son William III de Percy (1197–1245) became Richard's heir. • William de Percy, (1197–1245), 6th feudal baron of Topcliffe • Henry de Percy, 7th feudal baron of Topcliffe (1228–1272) •
Henry de Percy, 1st Baron Percy of Alnwick (1273–1314), 7th feudal baron of Topcliffe and 1st baron by writ. •
Henry de Percy, 2nd Baron Percy of Alnwick (1299–1352) • Henry de Percy, 3rd Baron Percy of Alnwick (see below) •
Thomas Percy (d. 1369), Bishop of Norwich •
Henry de Percy, 3rd Baron Percy of Alnwick (1320–1368) •
Henry Percy, 1st Earl of Northumberland (1341–1408) (forfeit 1405), helped Henry IV seize the throne, later rebelled against him •
Henry Percy (1364/1366–1403), also called Harry Hotspur, helped Henry IV seize the throne but later rebelled against him, killed at the
Battle of Shrewsbury • Henry Percy, 2nd Earl of Northumberland (see below) •
Lady Elizabeth Percy (c. 1390 – 1437) •
Henry Percy, 2nd Earl of Northumberland (1394–1455), supporter of King Henry VI, killed at the beginning of the Wars of the Roses • Henry Percy, 3rd Earl of Northumberland (see below) •
Thomas Percy, 1st Baron Egremont (1422–1460) •
Katherine Percy, Countess of Kent (1423 – c. 1475) •
Ralph Percy (d. 1464), knight, Lancastrian supporter in the Wars of the Roses •
William Percy (1428–1462), Bishop of Carlisle •
Henry Percy, 3rd Earl of Northumberland (1421–1461) (forfeit 1461), Lancastrian leader in the Wars of the Roses, killed at the
Battle of Towton • Henry Percy, 4th Earl of Northumberland (see below) •
Margaret Percy (b. c. 1447) •
Henry Percy, 4th Earl of Northumberland (1449–1489) (restored 1470), aligned with Yorkists, present but inactive at the Battle of Bosworth Field • Henry Algernon Percy, 5th Earl of Northumberland (see below) •
Eleanor Percy, Duchess of Buckingham (1474–1530), daughter of the 4th Earl •
Alan Percy (c. 1480 – 1560), son of the 4th Earl, English churchman and academic •
Anne FitzAlan, Countess of Arundel (1485–1552), daughter of the 4th Earl •
Thomas Percy (1560–1605), great-grandson of the 4th Earl, participated in the Gunpowder Plot •
Henry Algernon Percy, 5th Earl of Northumberland (1478–1527) •
Henry Percy, 6th Earl of Northumberland (1502–1537), betrothed to Anne Boleyn •
Thomas Percy (c. 1504 – 1537), participated the
Pilgrimage of Grace revolt •
Blessed Thomas Percy, 7th Earl of Northumberland (1528–1572) (forfeit 1571; restored 1572), led the
Rising of the North • Henry Percy, 8th Earl of Northumberland (see below) •
Henry Percy, 8th Earl of Northumberland (1532–1585) • Henry Percy, 9th Earl of Northumberland (see below) •
George Percy (1580–1632), explorer, author, early governor of Virginia •
Henry Percy, 9th Earl of Northumberland (1564–1632), known as "The Wizard Earl" for his intellectual pursuits, imprisoned after the Gunpowder Plot •
Dorothy Sidney, Countess of Leicester (c. 1598 – 1659) •
Lucy Hay, Countess of Carlisle (1599–1660) • Algernon Percy, 10th Earl of Northumberland (see below) •
Henry Percy, Baron Percy of Alnwick (d. 1659), royalist in the English Civil War •
Algernon Percy, 10th Earl of Northumberland (1602–1668), Lord High Admiral of England, later a Parliamentarian in the English Civil War •
Joceline Percy, 11th Earl of Northumberland (1644–1670), no male heirs, becomes the last male of direct Percy lineage to inherit the Earldom. •
Elizabeth Seymour, Duchess of Somerset (1667–1722), only daughter and heiress of the 11th Earl •
Algernon Seymour, 7th Duke of Somerset, 1st Earl of Northumberland (1684–1750), son of Elizabeth Seymour •
Elizabeth Percy (née Seymour), Duchess of Northumberland, 2nd Baroness Percy (1716–1776), daughter and heiress of the 7th Duke of Somerset, married Sir Hugh Smithson (who adopted the name Percy) •
Hugh Percy, 1st Duke of Northumberland (1714–1786),
né Smithson •
Hugh Percy, 2nd Duke of Northumberland (1742–1817), British army officer during the American Revolutionary War •
Hugh Percy, 3rd Duke of Northumberland (1785–1847) •
Algernon Percy, 4th Duke of Northumberland (1792–1865) •
Algernon Percy, 1st Earl of Beverley (1750–1830), second son of the 1st Duke • George Percy, 2nd Earl of Beverley, 5th Duke of Northumberland (see below) •
Algernon Percy (1779–1833), diplomat •
Hugh Percy (1784–1856), bishop •
Josceline Percy (1784–1856), Royal Navy officer •
William Henry Percy (1788–1855), Royal Navy officer •
George Percy, 2nd Earl of Beverley, 5th Duke of Northumberland (1778–1867), politician • Algernon George Percy, 6th Duke of Northumberland (see below) •
Lord Josceline Percy (1811–1881), politician •
Lord Henry Percy (1817–1877), lieutenant-general in the British Army •
Algernon George Percy, 6th Duke of Northumberland (1810–1899), politician • Henry George Percy, 7th Duke of Northumberland (see below) •
Lord Algernon Percy (1851–1933), politician •
Henry George Percy, 7th Duke of Northumberland (1846–1918), politician •
Henry Percy, Earl Percy (1871–1909), politician • Alan Ian Percy, 8th Duke of Northumberland (see below) •
Eustace Percy, 1st Baron Percy of Newcastle (1887–1958), politician •
Alan Ian Percy, 8th Duke of Northumberland (1880–1930) •
Henry George Alan Percy, 9th Duke of Northumberland (1912–1940), killed in World War II • Hugh Algernon Percy, 10th Duke of Northumberland (see below) •
Elizabeth Douglas-Hamilton, Duchess of Hamilton and Brandon (1916–2008) •
Hugh Algernon Percy, 10th Duke of Northumberland (1914–1988) •
Henry Alan Walter Richard Percy, 11th Duke of Northumberland (1953–1995) •
Ralph George Algernon Percy, 12th Duke of Northumberland (b. 1956) •
Lady Katie Percy (b. 1982) •
George Dominic Percy, Earl Percy (b. 1984) •
Lady Melissa Jane Percy (b. 1987) •
Lord Max Percy (b. 1990), husband of
Princess Nora zu Oettingen-Spielberg ==Family tree==