Richard de Redvers (d. 1107) | |
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Earl of Devon (1st creation), probably in early 1141 |
Baldwin de Redvers (c. 1095–1155) Created 1141 1st Earl of Devon | |
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Richard de Redvers (d. 1162) 2nd Earl of Devon | | | | | | William de Redvers (aka de Vernon) (d. 1217) 5th Earl of Devon | | | | | | Renaud de Courtenay (d. 1194) |
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Baldwin de Redvers (d. 1188) 3rd Earl of Devon | | Richard de Redvers (fl. c. 1066 d. 1234) 4th Earl of Devon | | Baldwin de Redvers (d. 1216) | | Mary de Vernon | | Robert de Courtenay (d. 1242) |
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| | | | | | | | Baldwin de Redvers (1217–1245) 6th Earl of Devon | | John de Courtenay (d. 1274) | |
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| | | | Baldwin de Redvers (1236–1262) 7th Earl of Devon | | Isabel de Redvers (1237–1293) suo jure 8th Countess of Devon | | Hugh Courtenay (1249–1292) | |
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| | | | | | | | | | | | Baron Courtenay, 1299 Earl of Devon (2nd creation or continuation of 1st creation), 1335 |
| | | | | | | | | | | | Hugh de Courtenay (1276–1340) 1st Baron Courtenay 1st/9th Earl of Devon | |
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| | | | | | | | | | | | Hugh de Courtenay (1303–1377) 2nd Baron Courtenay 2nd/10th Earl of Devon | |
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Hugh Courtenay (1327–1348) | | Edward Courtenay of Godlington (c. 1331–1368/1371) | | William Courtenay (c. 1342–1396) Archbishop of Canterbury | | | | | | Philip Courtenay (c. 1355–1406) |
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Hugh Courtenay (c. 1345–1374) 3rd Baron Courtenay | | Edward de Courtenay (1357–1419) 4th Baron Courtenay 3rd/11th Earl of Devon | | | | | | Hugh Courtenay | | John Courtenay (d. before 1415) |
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Edward de Courtenay (c. 1385–1418) Styled Lord Courtenay | | Hugh de Courtenay (1389–1422) 5th Baron Courtenay 4th/12th Earl of Devon | | | | | | Hugh Courtenay (d. 1471) | | Philip Courtenay (1404–1463) |
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| | | | Thomas de Courtenay (1414–1458) 6th Baron Courtenay 5th/13th Earl of Devon | | | | | | Edward Courtenay (d. 1509) Created 1485 1st Earl of Devon Forfeit at his death by his son's attainder 1504 | | William Courtenay (d. 1485) |
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| | | | Thomas Courtenay (1432–1461) 7th Baron Courtenay 6th/14th Earl of Devon | | John Courtenay (1435–1471) Attaider of 1461 reversed Title restored 1470 7th/15th Earl of Devon Title in Abeyance 1471–1485 Attainder of 1461 re-invoked 1485, title forfeit | | William Courtenay (d. 1511) Attainted 1504 Restored and Created 1511 1st Earl of Devon | | William Courtenay (d. 1512) |
| | | | Earldom of Devon and Barony of Courtenay forfeit, 1461 | | Earldom of Devon forfeit, 1485 | | | | | | | | | | |
| | | | | | | | | | | | Marquess of Exeter, 1525 | | | | | |
| | | | | | | | | | | | Henry Courtenay (1498–1538) 2nd Earl of Devon Created 1525 1st Marquess of Exeter Attainted 1538 Titles forfeit | | William Courtenay (1477–1535) |
| | | | | | | | | | | | Marquessate of Exeter and Earldom of Devon forfeit, 1538 | | | | | |
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| | | | | | | | | | | | Earl of Devon, (2nd creation) 1553 | | | | | |
| | | | | | | | | | | | Edward Courtenay (1527–1556) Created 1553 1st Earl of Devon Title granted with remainder to heirs male whatsoever Title Dormant until 1831 | | George Courtenay |
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| | | | | | | | | | | | | | | | William Courtenay (1529–1557) de jure 2nd Earl of Devon |
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| | | | | | | | | | | | | | | | William Courtenay (1543–1630) de jure 3rd Earl of Devon |
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| | | | | | | | | | | | William Courtenay (d. 1605) | | Francis Courtenay de jure 4th Earl of Devon (c. 1576–1638) |
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| | | | | | | | | | | | | | | | William Courtenay (1628–1702) Created 1644 1st Baronet of Powderham Castle de jure 5th Earl of Devon |
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| | | | | | | | | | | | | | | | Francis Courtenay (1650–1699) |
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| | | | | | | | | | | | | | | | William Courtenay (1675/6-1735) 2nd Baronet of Powderham Castle de jure 6th Earl of Devon |
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| | | | | | | | William Courtenay (1709–1762) 3rd Baronet of Powderham Castle Created 1762 1st Viscount Courtenay de jure 7th Earl of Devon | | | | | | Henry Reginald Courtenay (1714–1763) |
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| | | | | | | | William Courtenay (1742–1788) 2nd Viscount Courtenay de jure 8th Earl of Devon | | William Courtenay (1738–1783) | | Henry Reginald Courtenay (1741–1803) Bishop of Exeter |
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| | | | | | | | William Courtenay (1768–1835) 3rd Viscount Courtenay Claim established 1831 to Earldom 9th Earl of Devon Viscountcy Extinct | | | | | | William Courtenay (1777–1859) 10th Earl of Devon |
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| | | | | | | | William Reginald Courtenay (1807–1888) 11th Earl of Devon | | Henry Hugh Courtenay (1811–1904) 13th Earl of Devon | | Thomas Peregrine Courtenay (1782–1841) |
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| | | | | | | | Edward Baldwin Courtenay (1836–1891) 12th Earl of Devon | | Henry Reginald Courtenay (1850–1897) Styled Lord Courtenay |
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| | | | Charles Pepys Courtenay (1870–1927) 14th Earl of Devon | | Henry Hugh Courtenay (1872–1935) 15th Earl of Devon | | Frederick Leslie Courtenay (1875–1935) 16th Earl of Devon |
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| | | | | | | | | | | | Charles Christopher Courtenay (1916–1998) 17th Earl of Devon |
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| | | | | | | | | | | | Hugh Rupert Courtenay (1942–2015) 18th Earl of Devon |
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| | | | | | | | | | | | Charles Peregrine Courtenay (b. 1975) 19th Earl of Devon |
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| | | | | | | | | | | | Jack Haydon Langer Courtenay (b. 2009) Styled Lord Courtenay Heir Apparent |