| | | | | | | | Robert 1000–1035 Duke of Normandy |
| | | | | | | | | | | | | | | | |
| | | | |
| | | | | | | | Adelaide of Normandy c. 1030–before 1090 Countess of Aumale | | William the Conqueror c. 1028–1087 King of England |
| | | | Earl of Huntingdon (1st creation), 1065 Earl of Northampton (1st creation), 1071 | | | | | |
| | | | Waltheof d. 1076 Earl of Northumbria, 1st Earl of Huntingdon and Earl of Northampton | | Judith of Lens 1054/1055–c. 1090, 2nd Earl of Huntingdon |
| |
| | | | | | | | | | |
| | | |
| | | | Maud c. 1074–1130 3rd Countess of Huntingdon, 2nd Countess of Northampton Queen of Scotland | | Simon I de Senlis d. 1111–1113 3rd Earl of Huntingdon, 2nd Earl of Northampton jure uxoris |
| |
| | | | | | | | | | |
| | | |
| | | | Simon II de Senlis c. 1098–1153 4th Earl of Huntingdon, 3rd Earl of Northampton |
| | | | | | | |
| | | | Simon III de Senlis c. 1138–1184 5th Earl of Huntingdon, 4th Earl of Northampton |
| | | | Earldom of Northampton (1st creation) reverted to the Crown, 1184 |
Earl of Northampton (2nd creation), 1337 |
William de Bohun c. 1312 – 1373 Earl of Hereford, Earl of Essex, 1st Earl of Northampton | | | | | | Edward III 1312–1377 King of England |
| | | | | | | | | | | | | | | | | | |
| | | | | | | | | |
Humphrey de Bohun 1342–1373 Earl of Hereford, Earl of Essex, 2nd Earl of Northampton | | John of Gaunt 1340–1399 Duke of Lancaster | | | | | | Thomas of Woodstock 1355–1397 Duke of Gloucester |
Earldom of Northampton (2nd creation) abeyant, 1373 | | | | | | | | | | | | | | |
| | | | Earl of Northampton (2nd creation restored), 1384 | | | | | | Earl of Northampton (3rd creation), 1399 |
| | | | Henry Bolingbroke c. 1367 – 1413 3rd Earl of Northampton, later King Henry IV | | | | | | Anne of Gloucester 1383–1438 Countess of Northampton |
| | | | Earldom of Northampton (2nd creation) merged in the crown, 1399 | | | | | | Earldom of Northampton (3rd creation) extinct, 1438 |
| | | | | | | | Earl of Huntingdon (7th creation), 1529 |
| | | | | | | | George Hastings 1488–1544 1st Earl of Huntingdon |
| | | | | | | | | | | | | | | | | | | | |
| | | | | | | | |
| | | | | | | | | | | | | | | | | Baron Hastings of Loughborough, 1558 |
| | | | | | | | Francis Hastings 1514–1561 2nd Earl of Huntingdon | | | | | | Edward Hastings c. 1521–1572 Baron Hastings of Loughborough |
| | | | | | | | | | | | | | | | | Barony Hastings of Loughborough extinct, 1572 |
Earl of Northampton, (4th creation), 1604 | | Baron Compton, 1572 | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | |
Henry Howard 1540–1614 Earl of Northampton | | Henry Compton 1544–1589 1st Baron Compton | | Frances Anne Hastings 1533–1574 | | Henry Hastings 1536–1595 3rd Earl of Huntingdon | | George Hastings 1540–1604 4th Earl of Huntingdon | | Edward Hastings 1541–1603 |
| |
Earldom of Northampton (4th creation) extinct, 1614 | | | | | | | | | | | | | | | | | | | | |
| | | |
| | | | Earl of Northampton (5th creation), 1618 | | | | | | | | | | | | | | |
| | | | William Compton d. 1630 1st Earl of Northampton, 2nd Baron Compton | | | | | | Francis Hastings 1560–1595 | | Henry c. 1555–1640 |
| | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | Henry Hastings 1586–1643 5th Earl of Huntingdon | | | | | |
| | | | | | | | | | | | | | | | | | | | | |
| | | | Spencer Compton 1601–1643 2nd Earl of Northampton, 3rd Baron Compton | | | | | | Ferdinando Hastings 1609–1656 6th Earl of Huntingdon | | Henry b. 1605 |
| | | | | | | | | | | | | | | | | | | | | |
| | | | James Compton 1622–1681 3rd Earl of Northampton, 4th Baron Compton | | | | | | Theophilus Hastings 1650–1701 7th Earl of Huntingdon | | Richard 1645–1714 |
| | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | |
| | | | | Baron Wilmington, 1728 Earl of Wilmington and Viscount Pevensey, 1730 | | | | | | | | | | | | | | | |
George Compton 1664–1727 4th Earl of Northampton, 5th Baron Compton | | Spencer Compton c. 1674 – 1743 Earl of Wilmington, Viscount Pevensey, Baron Wilmington | | George Hastings 1677–1705 8th Earl of Huntingdon | | | | | | | Henry 1701–1786 |
| | | | | Earldom of Wilmington, Vicountcy Pevensey, and Barony Wilmington extinct, 1743 | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | |
James Compton 1687–1754 5th Earl of Northampton, 6th Baron Compton | | George Compton 1692–1758 6th Earl of Northampton | | Charles Compton | | Theophilus Hastings c. 1696–1746 9th Earl of Huntingdon | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | |
Charlotte Townshend d. 1770 Viscountess Townshend, Baroness Ferrers of Chartley, 7th Baroness Compton | | | | | | Charles Compton 1737–1763 7th Earl of Northampton | | Francis Hastings 1729–1789 10th Earl of Huntingdon | | Theophilus Hastings 1728–1804 11th Earl of Huntingdon de jure | | George 1735–1802 |
| | | | | | | | | | | | | | | | | | Earldom of Huntingdon dormant/abeyant, 1804 | | | | | |
George Townshend 1753–1811 Marquess Townshend, Earl of Leicester, Viscount Townshend, Baron Townshend, Baron Ferrers of Chartley, 8th Baron Compton | | | | | | Spencer Compton 1760–1828 8th Earl of Northampton | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | Marquess of Northampton (2nd creation), Earl Compton and Baron Wilmington, 1812 | | | | | | | | | | Earldom of Huntingdon claim restored, 1819 |
George Townshend (1778–1885) Marquess Townshend, Earl of Leicester, Viscount Townshend, Baron Townshend, Baron Ferrers of Chartley, 9th Baron Compton | | | | | | Charles Compton 1760–1828 1st Marquess of Northampton, Earl Compton, and Baron Wilmington, 9th Earl of Northampton | | | | | | | | | | Hans "Francis" Hastings 1779–1828 12th Earl of Huntingdon |
Barony Compton abeyant, 1855 | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | |
| | | | | | | | Spencer Joshua Alwyne Compton 1790–1851 2nd Marquess of Northampton, Earl Compton, and Baron Wilmington, 10th Earl of Northampton | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | |
| | | | Charles Douglas-Compton 1816–1877 3rd Marquess of Northampton, Earl Compton, and Baron Wilmington, 11th Earl of Northampton | | William Compton 1818–1897 4th Marquess of Northampton, Earl Compton, and Baron Wilmington, 12th Earl of Northampton | | | | | | Francis Theophilus Henry Hastings 1808–1875 13th Earl of Huntingdon | | George 1814–1876 |
| | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | Francis Power Plantagenet Hastings 1841–1885 14th Earl of Huntingdon | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | |
| | | | | | | | William George Spencer Scott Compton 1851–1913 5th Marquess of Northampton, Earl Compton, and Baron Wilmington, 13th Earl of Northampton | | Warner Francis John Plantagenet Hastings 1868–1939 15th Earl of Huntingdon | | Aubrey 1878–1929 | | Hans 1865–1933 |
| | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | William Bingham Compton 1885–1978 6th Marquess of Northampton, Earl Compton, and Baron Wilmington, 14th Earl of Northampton | | Francis John Clarence Westenra Plantagenet Hastings 1901–1990 16th Earl of Huntingdon | | Peter Hastings-Bass 1920–1964 | | George 1905–1981 |
| | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | |
| | | | | | | | Spencer Douglas David Compton b. 1946 7th Marquess of Northampton, Earl Compton, and Baron Wilmington, 15th Earl of Northampton | | William Edward Robin Hood Hastings-Bass b. 1948 17th Earl of Huntingdon | | John Hastings-Bass b. 1954 | | George 1938–2005 |
| | | | | | | | | | | | | | | | | Heir presumptive to the Earldom of Huntingdon | | | | | |
| | | | | | | | Daniel Bingham Compton b. 1973 styled Earl Compton | | | | | | | | | | Adam b. 1977 |
| | | | | | | | Heir apparent to the Marquessate of Northampton | | | | | | | | | | Second Heir presumptive to the Earldom of Huntingdon |