William Seymour 3rd Duke of Somerset (1660-1671) 1654–1671 | | |
| | Henry Seymour Marquis of Hertford, Baron Beauchamp of Hache 1626–1654 Mary Capell Duchess of Beaufort 1630–1715 | | |
| | Sir William Seymour 1588–1660 Frances Devereux Duchess of Somerset 1599–1674 | | |
| | Edward Seymour Viscount Beauchamp 1561–1612 | | |
| | | | | | Edward Seymour 1st Duke of Somerset, Lord Protector of England 1500–1552 | | | | Margaret Wentworth …–1550 | | | | | Henry Wentworth of Nettlestead & Suffolk, Sir …–… | | | | Philip Wentworth Sir …–1464 | | |
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| | | Henry Grey Duke of Suffolk 1517–1554 Frances Brandon 1517–1559 | | | | | Charles Brandon 1st Duke of Suffolk 1484–1545 | | | | King of England Henry VII … 1457–1509 Elizabeth Plantagenet of York 1466–1503 | | | | Edmund Tudor Earl of Richmond 1430–1456 | | |
| | | King of England Edward IV … 1442–1483 Elizabeth Woodville 1437–1492 | | |
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