| | | | | | | | | | | | Earl de Dorset (posible primera creación), 1070 |
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| | | | | | | | | | | | Saint Osmund d.1099 Obispo de Salisbury y posible Conde de Dorset | | | | | | Roger de Beaumont c.1015–1094 |
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| | | | | | | | | | | | Earl de Dorset (1a creación) descontinuó, 1099 | | | | | | | | | | | | | | |
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| | | | | | | | | | | | | | | | | | | | Earl de Leicester (1a creación), 1107 | | | | | |
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| | | | | | | | Rey Enrique I c.1068–1135 | | Rey Esteban 1092/1096–1154 | | | | | | Robert de Beaumont c.1040/1050–1118 Primer Conde de Leicester | | Henry de Beaumont d.1119 Primer Conde de Warwick |
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| | | | | | | | | | | | | | | | | | Earl de Worcester (1a creación), 1138 | | | | | | | | | | | | | | |
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| | | | | | | | Robert FitzRoy c.1090–1147 Primer Conde de Gloucester | | Matilda ()d.bef. 1141) | | Waleran de Beaumont 1104–1166 Earl de Worcester | | Robert de Beaumont 1104–1168 II Conde de Leicester | | Hugh de Beaumont b.1106 Primer conde de Bedford | |
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| | | | | | | | | | | | | | | | | Previo de Worcester (1a creación) extinto, 1166 | | | | | |
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| | | | | | | | William FitzRobert 1116–1183 2o Conde de Gloucester | | | | | | Hawise de Beaumont | | Robert de Beaumont d.1190 3a Earl de Leicester |
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| | | | | | | | | | | | | | | | | | | | | Robert de Beaumont d.1204 4a Earl de Leicester | | AmiceCountess de Rochefort |
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| | | | | | | | Rey Juan 1166–1216 | | Isabella 1173/1174–1217 Condesa de Gloucester | | | | | | | | | | Simon de Montfort c.1175–1218 5o Conde de Leicester |
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| | | | | | | | Rey Enrique III 1207–1272 | | | | | | | | | | Eleanor de Inglaterra | | Simon de Montfort c.1208–1265 6o Conde de Leicester |
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| | | | | | | | | | | | | | | | | | | | | | | | | | Previo de Leicester (1a creación) falto, 1265 |
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| | | | | | | | | | | | | Earl de Leicester (2a creación), 1267 Earl de Lancaster, 1276 |
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| | | | | | | | Rey Eduardo I 1239–1307 | | Edmund Crouchback 1245 a 1296 Primer Conde de Leicester, Primer conde de Lancaster |
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| | | | | | | | | | | | | | | | | | | | | | Previo de Leicester (1a creación) restaurado, 1324 Previo de Lancaster restaurado, 1327 |
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| | | | | | | | Rey Eduardo II 1284–1327 | | Thomas de Lancaster 1278–1322 II Conde de Leicester, 2o Conde de Lancaster | | | | | | Henry de Lancaster 1281–1345 3a Earl de Leicester, 3a Earl de Lancaster |
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| | | | | | | | | | | | | Previo de Leicester (1a creación) perdido, 1322 Previo de Lancaster perdido, 1322 | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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| | | | | | | | | | | | | | | | | Duke of Lancaster, 1351 | | | | | | | | | | | | | | | | | | | | | | | |
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| | | | | | | | Rey Eduardo III 1312–1377 | | | | | | Henry de Grosmont c.1310–1361 Duke of Lancaster, 4a Earl de Lancaster, 4a Earl de Leicester | | | | | | Joan de Lancaster c.1312–1349 | | John (II) de Mowbray 1310–1361 3a Barón Mowbray | | Eleanor de Lancaster 1318–1372 | | María de Lancaster c.1320–1362 |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Earl de Worcester (2a creación), 1397 |
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| | | | | | | | John of Gaunt 1340–1399 Duke of Lancaster, 5o Conde de Lancaster, (6th) Earl of Leicester jure uxoris | | Blanche de Lancaster 1342–1368 | | | | | | Maud of Lancaster 1340–1362 a.k.a. Matilda, Condesa de Hainault | | William 1330–1389 Duque de Baviera y Conde de Holanda, (5o) Conde de Leicester jure uxoris | | | | | | | Richard Fitzalan 1346–1397 Earl de Arundel | | Thomas Percy 1343–1403 Earl de Worcester | |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Previo de Worcester (2a creación) extinguida, 1403 |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | Roger La Warr 1326–1370 | | Eleanor Mowbray | | | | | |
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| | | | | | | | | | | | | | Earl de Somerset (1a creación), 1397 Marquesa de Somerset y Marquesa de Dorset (1a creación), 1397 | | Earl de Dorset (2a creación), 1411 | | | | | | | | | | | | | | | | | | | | |
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| | | | | | | | Henry Bolingbroke 1367–1413 (7th) Earl of Leicester, Duke of Lancaster Rey Enrique IV | | John Beaufort c.virtud–1410 Marquesa de SomersetMarquesa de Dorset, Primer Conde de Somerset | | Thomas Beaufort c.1377–1426 Duke of Exeter, Earl de Dorset | | Joan Beaufort c.1379–1440 | | Joan La Warr | | Thomas West 1365–1405 1er Barón Oeste | | Joan de Beauchamp 1375 a 1435 |
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| | | | | | | | Previo de Leicester (2a creación) y Duque de Lancaster en la Corona, 1399 | | Marquessate of Somerset and Marquessate of Dorset (1st creation) revoked, 1399 | | Condeno de Dorset (2a creación) extinto, 1426 | | | | | | | | | | | | | | | | | | | | |
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| | | | | | | | Duke of Lancaster, 1399 | | | | | | | | | | | | | | | | | | | | | | | | | Earl de Worcester (3a creación), 1421 |
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| | | | | | | | Henry de Monmouth 1386–1422 Duke of Lancaster Rey Enrique V | | | | | | | | | | | | | | | | Reginald West 1395–1450 6o Barón De La Warr y 3o Barón Oeste | | | | | | Richard Beauchamp (1394–c.1422) Earl de Worcester |
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| | | | | | | | Duque de Lancaster en la Corona, 1413 | | | | | | | | | | | | | | | | | | | | | | | | | Previo de Worcester (2a creación) extinguida, 1422 |
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| | | | | Duke of Somerset (1a creación), 1443 | | | | | | Earl de Dorset (3a creación), 1442 Marquesa de Dorset (2a creación), 1443 Duke of Somerset (2a creación), 1448 | | | | | | | | | | | | | | | | | | | | | | | | |
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Henry Beaufort 1401–1418 II Conde de Somerset | | John Beaufort 1404-1444 3a Earl de Somerset, Primer Duque de Somerset | | | | | | Edmund Beaufort 1406–1455 Segundo Duque de Somerset, primera marquesa de Dorset, 4o Conde de Somerset, Earl de Dorset | | | | | | Richard Neville 1400–1460 Earl de Salisbury | | Richard West 1430-1476 7a Barón De La Warr y cuarto Barón Oeste | | Edward Neville d.1476 de facto 3a (de jure 1a) Baron Bergavenny | | Elizabeth Beauchamp 1415–1448 |
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| | | | Duque de Somerset (primera creación) extinguido, 1444 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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| | | | | | | | | | | | | | | | | | Títulos reclamados aquí son disputados | | | | | | | Earl de Worcester (4a creación), 1449 | | | | | |
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| | | | Margaret Beaufort 1443–1509 | | Elizabeth Woodville c.1437–1492 | | Henry Beaufort 1436–1464 5o Conde de Dorset, 2a Marquesa de Dorset, 3o Duque de Somerset | | Edmund Beaufort c.1438–1471 6o Conde de Dorset, 3a Marquesa de Dorset, 4o Duque de Somerset | | Cecily Neville c.1425–1450 | | John Tiptoft 1427–1470 Primer Conde de Worcester | | | | | |
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| | | | | | | | | | | | | | Earldom of Dorset, Marquessate of Dorset (2nd creation), and Dukedom of Somerset (2nd creation) achieved, 1461, but possibly restored (disputed), 1463 | | Earldom of Dorset, Marquessate of Dorset (2a creación), and Dukedom of Somerset (2a creación) extinct, 1471 | | | | | | Previo de Worcester (4a creación) alcanzada, 1470 | | | | | |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Thomas West c.1457–1525 8o Barón De La Warr y 5o Barón Oeste |
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| | | | | | | | | | | | | | Marquesa de Dorset (3a creación), 1475 | | Earl de Worcester (5a creación), 1514 | | | | | | Earl de Worcester (4a creación) restaurado, 1471 | | | | | |
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Margery Wentworth c.1478–1550 | | Rey Enrique VII 1457–1509 | | Elizabeth of York 1466–1503 | | Thomas Grey 1451–1501 1a Marquesa de Dorset | | Charles Somerset c.1460–1526 Primer Conde de Worcester | | Elizabeth Somerset c.1476–1507 3a Baronesa Herbert Suo jure | | Edward Tiptoft c.1469–1485 2o Conde de Worcester | | Eleanor West b.1481 | | Edward Guildford c.1474–1534 |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Previo de Worcester (4a creación) extinto, 1485 | | | | | | | |
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Viscount Beauchamp "de Hache" (1a creación), 1536 Earl de Hertford (2a creación), 1537 Duke of Somerset (4a creación), 1547 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Duke of Somerset (3a creación), 1499 |
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Edward Seymour c.1500–1552 Primer Duque de Somerset, Primer Conde de Hertford, 1er Viscount Beauchamp | | Jane Seymour c.1508–1537 | | Rey Enrique VIII 1491–1547 | | Thomas Grey 1477–1530 2a Marquesa de Dorset | | Henry Somerset c.1495–1548 2o Conde de Worcester, 4o Barón Herbert | | John Dudley 1504–1553 Duke of Northumberland | | Jane Guildford c.1508/1509–1555 | | Mary Tudor 1496–1533 Reina de Francia Duquesa de Suffolk | | Prince Edmund 1499-1500 Primer Duque de Somerset |
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Dukedom of Somerset (4a creación), Earldom of Hertford (2a creación), y Viscountcy Beauchamp (1a creación) falsificación, 1552 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Dukedom of Somerset (3a creación) extinguido, 1500 |
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| | | | | | | | | | Duke of Richmond and Somerset, 1525 | | | | | | | | | | | | | | | | | | | | | | | | |
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| | | | | King Edward VI 1537–1553 | | Henry Fitzroy 1519–1536 Primer Duque de Richmond y Somerset | | | | | | | | | | | | | | | | Henry Grey 1517–1554 Duke of Suffolk 3a Marquesa de Dorset | | Lady Frances Brandon 1517–1559 Duquesa de Suffolk |
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| | | | | | | | | | Dukedom of Richmond and Somerset extinct, 1536 | | | | | | | | | | | | | | | | Marquesato de Dorset (3a creación) alcanzado y honores perdidos, 1554 | | | |
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| | | | | Earl de Hertford (3a creación) revertido, 1559 | | | | | | | | | | | | | | | | | | | | | Earl de Leicester (3a creación), 1564 | | | | | | | | | | | | | | | | | Barón Buckhurst de Buckhurst en el condado de Sussex (1a creación), 1567 Earl de Dorset (4a creación), 1604 |
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Edward Seymour c.1528–1593 | | Edward Seymour 1539–1621 Primer Conde de Hertford | | | | | | Katherine Grey 1540 a 1568 | | William Somerset c.1526–1589 3a Earl de Worcester, 5o Barón Herbert | | John Dudley c.1527–1554 Earl of Warwick | | Robert Dudley 1532-1588 Primer Conde de Leicester | | Mary Dudley d.1586 m. Henry Sidney | | Lord Guildford Dudley c.1535–1554 | | Lady Jane Grey 1537–1554 Controvertida Reina de Inglaterra | | Thomas Sackville 1536–1608 Primer Conde de Dorset, 1er Barón Buckhurst |
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| | | | | Earldom of Hertford (3a creación) falsificación, 1552 | | | | | | | | | | | | | | | | | | | | Previo de Leicester (3a creación) extinto, 1588 | | | | | | | | | | | | | | | | | | |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Earl de Leicester (4a creación), 1618 | | | | | | | | | |
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Edward Seymour c.1563–1613 1er Baronet | | | | | | Edward Seymour 1561–1612 Viscount Beauchamp | | | | | | Edward Somerset 1553–1628 4a Earl de Worcester, 6o Barón Herbert | | | | | | Philip Sidney 1554–1586 | | Mary Sidney 1561-1621 | | Robert Sidney 1563–1626 Primer Conde de Leicester | | | | | | Robert Sackville 1561–1609 Segundo conde de Dorset, segundo barón Buckhurst |
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| | | | | Marquesa de Hertford (1a creación), 1641 Duke of Somerset (4a creación restaurada), 1660 | | Barón Seymour de Trowbridge, 1641 | | Viscount Rochester, 1611 Earl de Somerset (3a creación), 1613 | | Marquesa de Worcester, 1642 | | Viscount Somerset of Cashel, 1626 | | | | | | | | | | | | | | | | | | | | | | | |
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Edward Seymour c.1580–1659 2o Baronet | | William Seymour 1588-1660 Segundo conde de Hertford, 1a Marquesa de Hertford, 3o Duque de Somerset | | Francis Seymour c.1590–1664 Primer Señor Seymour de Trowbridge | | Robert Carr c.1587–1645 Earl de Somerset | | Henry Somerset 1577–1646 1a Marquesa de Worcester, 5o Conde de Worcester, 7o Barón Herbert | | Thomas Somerset 1579–1651 Viscount Somerset | | | | | | | | | | Robert Sidney 1595–1677 II Conde de Leicester | | Richard Sackville 1589-1624 3o Conde de Dorset, 3o Barón Buckhurst | | Edward Sackville 1591–1652 4o conde de Dorset, 4o Barón Buckhurst |
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| | | | | | | | | | | | | | | | Earldom of Somerset (3a creación) y Viscountcy Rochester extinto, 1645 | | | | | | | Viscountcy Somerset extinto, 1651 | | | | | | | | | | | | | | | | | | | | | | | | |
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Edward Seymour 1610–1688 3o Baronet | | Henry Seymour c.1626–1654 Lord Beauchamp | | | Charles Seymour c.1621–1665 Segundo Señor Seymour de Trowbridge | | | | | | Edward Somerset 1601–1667 2a Marquesa de Worcester, 6o Conde de Worcester, 8o Barón Herbert | | | | | | Philip Sidney 1619-1698 3a Earl de Leicester | | Algernon Sidney 1623–1683 | | Lady Lucy Sidney 1630–1685 | | Henry Sidney 1641–1704 Earl de Romney | | Richard Sackville 1522–1677 5o conde de Dorset, 5o Barón Buckhurst |
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| | | | | | | | | | | | | | | | | | | | | | | | | | Duke of Beaufort, 1682 | | | | | | | | | | | | | | | | | | | | | Barón Cranfield, de Cranfield en el condado de Middlesex, 1674 Earl de Middlesex (2a creación), 1675 |
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Edward Seymour 1633–1708 4o Baronet | | William Seymour 1650–1671 3o Duque de Somerset, 2a Marquesa de Hertford, 3a Earl de Hertford | | John Seymour c.1646–1675 4o Duque de Somerset, 3a Marquesa de Hertford, 4a Earl de Hertford | | Francis Seymour 1658–1678 5o Duque de Somerset, 3er Señor Seymour de Trowbridge | | Charles Seymour 1662–1748 6o Duque de Somerset | | Henry Somerset 1629–1700 Primer Duque de Beaufort, 3a Marquesa de Worcester, 7th Earl of Worcester, 9o Barón Herbert | | Robert Sidney 1649–1702 4a Earl de Leicester | | | | | | | | | | Thomas Pelham 1653–1712 | | Charles Sackville 1522–1677 6o conde de Dorset, 1o conde de Middlesex, 6o Barón Buckhurst, 1o Barón Cranfield |
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| | | | | | | | | | Marquessate of Hertford (1a creación) extinto, 1675 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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| | | | | Barón Conway de Ragley en el condado de Warwick, 1703 Barón Conway of Killultagh en el condado de Antrim, 1712 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Duke of Dorset, 1720 |
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Edward Seymour 1663–1740 5o Baronet | | Francis Seymour-Conway 1679–1732 1er Barón Conway | | | | | | Edward Coke d.1707 | | Algernon Seymour 1684–1750 7o Duque de Somerset, Earl of Northumberland | | Charles Somerset 1660–1698 Marquesa de Worcester | | Philip Sidney 1676–1705 5o Conde de Leicester | | John Sidney 1680–1737 6o Conde de Leicester | | Jocelyn Sidney 1682–1743 7o Conde de Leicester | | Elizabeth Pelham 1681–1711 | | Lionel Sackville 1688-1765 Primer Duque de Dorset, 7o Conde de Dorset, 2o Conde de Middlesex, 7o Barón Buckhurst, 2o Barón Cranfield |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Previo de Leicester (4a creación) extinto, 1743 | | | | | | | | | | | | | | | | | | | |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | Barón Lovel, de Minster Lovel en el condado de Oxford, 1728 Earl de Leicester (5a creación) y Cola Viscount de Holkham en el condado de Norfolk, 1744 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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Edward Seymour 1695–1757 6o Baronet 8o Duque de Somerset | | | | | | | | | | | | | | | | | | | | Anne Coke | | Thomas Coke 1697–1759 Earl de Leicester, Cola Viscount | | Henry Somerset 1684–1714 Segundo Duque de Beaufort, 4a Marquesa de Worcester, 8o Conde de Worcester, 10o Barón Herbert | | | | | | Charles Townshend 1700–1764 3rd Viscount Townshend | | | | | | | | | | | | | | | |
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| | | | | | | | | | | | | | | | | | Earl de Hertford (4a creación) y Viscount Beauchamp (2a creación), 1850 Marquesa de Hertford (2a creación), 1793 | | | | | | | Previo de Leicester (5a creación) extinto, 1759 | | | | | | | | | | | | | | | | | | | | | | | | | | | Viscount Sackville y Baron Bolebrooke en el condado de Sussex, 1782 |
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Edward Seymour 1717–1792 9o Duque de Somerset | | Webb Seymour 1718–1793 10o Duque de Somerset | | | | | | Francis Seymour 1726–1799 | | Francis Seymour-Conway 1718–1794 1a Marquesa de Hertford, Earl de Hertford, y Viscount Beauchamp, 2o Barón Conway | | Coque Wenman (Roberts) c.1717–1776 | | | | | | Henry Somerset-Scudamore 1707-1745 3a Duke of Beaufort, Quinta Marquesa de Worcester, IX Earl de Worcester, 11o Barón Herbert | | Charles Noel Somerset 1709-1756 4a Duke of Beaufort, 6o Marquesa de Worcester, 10o Conde de Worcester, 12o Barón Herbert | | George Townshend 1724–1807 1a Marquess Townshend | | Charles Sackville 1711–1769 Segundo Duque de Dorset, 8o Conde de Dorset, 3o Conde de Middlesex, 8o Barón Buckhurst, 3o Barón Cranfield | | John Sackville 1713–1765 | | George Germain 1716-1785 1er Viscount Sackville, 1er Baron Bolebrooke |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | Earl de Leicester (7a creación), 1837 | | | | | | Baron Botetourt abeyance terminada, 1803 | | Earl de Leicester (6a creación), 1784 | | | | | | | | | | | | | | |
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| | | | | | | | | | | | | Francis Compton Seymour d.1822 | | Francis Ingram-Seymour-Conway 1743–1822 2a Marquesa de Hertford, Earl de Hertford, y Viscount Beauchamp, 3a Barón Conway | | Hugh Seymour 1759–1801 | | Thomas William Coke 1754–1842 Primer Conde de Leicester, Primera Cola Viscount | | | | | | Henry Somerset 1744–1803 5o Duque de Beaufort, VII Marquesa de Worcester, 11o Conde de Worcester, 13o Barón Herbert, 5o Barón Botetourt | | George Townshend 1753–1811 2o Marquess Townshend, Primer Conde de Leicester | | | | | | John Freddie Sackville 1745–1799 3o Duque de Dorset, 9o Conde de Dorset, 4o Conde de Middlesex, 9o Barón Buckhurst, 4o Barón Cranfield | | | | | |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Barón Raglan, 1852 | | | | | | | | | | | | | | | | | | | |
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| | | | Edward Adolphus St Maur 1775–1855 11o Duque de Somerset | | | | | | | | | | | Francis Charles Seymour-Conway 1777–1842 3a Marquesa de Hertford, Earl de Hertford, y Viscount Beauchamp, 4a Barón Conway | | George Seymour 1787–1870 | | | | | | | Henry Charles Somerset 1766–1835 6o Duque de Beaufort, Octava Marquesa de Worcester, 12a Earl de Worcester, 14o Barón Herbert, 6o Barón Botetourt | | FitzRoy James Henry Somerset 1788-1855 1er Barón Raglan | | George Townshend 1778–1855 3a Marquess Townshend, II Conde de Leicester | | | | | | George John Frederick Sackville 1793-1815 4th Duke of Dorset, 10th Earl of Dorset, 5th Earl of Middlesex, 10th Baron Buckhurst, 5th Baron Cranfield | | John Freddie Sackville 1767–1843 5th Duke of Dorset, 11th Earl of Dorset, 6th Earl of Middlesex, 2nd Viscount Sackville, 11th Baron Buckhurst, 6th Baron Cranfield, 2nd Baron Bolebrooke |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Previo de Leicester (6a creación) extinto, 1855 | | | | | | | | | | Dukedom of Dorset, Earldoms of Dorset (4th creation) and Middlesex (2nd creation), Viscountcy of Sackville, Baronies of Buckhurst (1st creation), Cranfield, y Bolebrooke extinct, 1843 |
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| | | | | | | | | | | | | Francis Edward Seymour 1788-1866 | | Richard Seymour-Conway 1800–1870 4a Marquesa de HHertford, Earl de Hertford, y Viscount Beauchamp, 5o Barón Conway | | Francis George Hugh Seymour 1812–1884 Quinta Marquesa de Hertford, Earl de Hertford, y Viscount Beauchamp, 6o Barón Conway | | | | | | | Henry Somerset 1792-1853 7o Duque de Beaufort, IX Marquesa de Worcester, 13o Conde de Worcester, 15o Barón Herbert, 8o Barón Botetourt | | | | | |
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Earl St. Maur, 1863 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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Edward Adolphus St Maur 1804-1885 12o Duque de Somerset | | Archibald Henry Algernon St Maur 1810–1891 13 duque de Somerset | | Algernon Percy Banks St Maur 1813–1894 14o Duque de Somerset | | Francis Payne Seymour 1815–1870 | | | | | | | | | | | Thomas William Coke 1822-1909 II Conde de Leicester, 2a Cola Viscount | | Henry Charles FitzRoy Somerset 1824–1899 8o Duque de Beaufort, 10o Marquesa de Worcester, 14a Earl de Worcester, 16o Barón Herbert, 8o Barón Botetourt | | | | | | Richard Henry FitzRoy Somerset 1817-1884 2o Barón Raglan |
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Earldom St. Maur extinto, 1885 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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Edward Adolphus Ferdinand St. Maur 1835–1869 | | | | | | Algernon St Maur 1846-1923 15o Duque de Somerset | | Edward Hamilton Seymour 1860-1931 16o Duque de Somerset | | Hugh de Grey Seymour 1843–1912 6th Marquess of Hertford, Earl of Hertford, y Viscount Beauchamp, 7th Baron Conway | | | | | | Thomas William Coke 1848-1941 3a Earl de Leicester, 3er Viscount Coke | | Henry Adelbert Wellington FitzRoy Somerset 1847-1924 9o Duque de Beaufort, 11o Marquesa de Worcester, 15o Conde de Worcester, 17o Barón Herbert, 9o Barón Botetourt | | Henry Richard Charles Somerset 1849-1932 | | George FitzRoy Henry Somerset 1857-1921 3a Barón Raglan |
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| | | | | | | | Evelyn Francis Edward Seymour 1882-1954 17 duque de Somerset | | George Francis Alexander Seymour 1871-1940 VII Marquesa de Hertford, Earl de Hertford, y Viscount Beauchamp, 8o Barón Conway | | Henry Charles Seymour 1878-1939 | | Thomas William Coke 1880-1949 4a Earl de Leicester, 4a Coca Cola Viscount | | Arthur George Coke 1882-1915 | | | | | | | Henry Charles Somers Augustus Somerset 1874-1945 | | FitzRoy Richard Somerset 1885-1964 4a Barón Raglan |
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| | | | | | | | Percy Hamilton Seymour 1910-1984 18 duque de Somerset | | | | | | | | | | | Thomas William Edward Coke 1908-1976 5o Conde de Leicester, 5a Cola Viscount | | Anthony Louis Lovel Coke 1909-1994 6o Conde de Leicester, 6th Viscount Coke | | Henry Hugh Arthur FitzRoy Somerset 1900-1984 10o Duque de Beaufort, 12a Marquesa de Worcester, 16o Conde de Worcester18o Barón Herbert, 10o Barón Botetourt | | Henry Robert Somers FitzRoy de Vere Somerset 1898-1965 | | | | |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Barony Botetourt abeyant, 1984 | | | | | | | | | | | | | | | |
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| | | | | | | | | | | | | | | | | Hugh Edward Conway Seymour 1930–1997 VIII Marquesa de Hertford, Earl de Hertford, y Viscount Beauchamp, 9o Barón Conway | | | | | | Edward Douglas Coca 1936–2015 7o Conde de Leicester, 7th Viscount Coke | | | | | | David Robert Somerset 1928–2017 11o Duque de Beaufort, 13 Marquesa de Worcester, 17o Conde de Worcester | | FitzRoy John Somerset 1927–2010 5o Barón Raglan | | Geoffrey Somerset b.1932 6o Barón Raglan |
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| | | | | | | | John Michael Edward Seymour b.1952 19 Duque de Somerset | | | | | | Henry (Harry) Jocelyn Seymour b.1958 IX Marquesa de Hertford, Earl de Hertford, y Viscount Beauchamp, 10o Barón Conway | | | | | | Thomas Edward Coke b.1965 8o Conde de Leicester, 8a Cola Viscount | | | | | | Henry John FitzRoy Somerset b.1952 12o Duque de Beaufort, 14o Marquesa de Worcester, 18o Conde de Worcester | | | | | | Arthur Geoffrey Somerset 1960 a 2012 | |
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| | | | | | | | Sebastian Edward Seymour b.1982 Señor Seymour | | | | | | William Francis Seymour b.1993 de estilo Earl de Yarmouth | | | | | | Edward Horatio Coca b.2003 Viscount Coke | | | | | | Henry Robert FitzRoy Somerset b.1989 Marquesa de Worcester | | | | | | Inigo Arthur Fitzroy Somerset b.2004 | |
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| | | | | | | | Heredero aparente Dukedom of Somerset | | | | | | Heredero aparente Marquesaje de Hertford | | | | | | Heredero aparente Previo de Leicester | | | | | | Heredero aparente Duque de Beaufort | | | | | | Heredero aparente al Barón Raglan |
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