House of Conway
Incorporating the families of Seymour, Percy and Wyndham
Sir John Seymour (1474–1536)
Children of Sir John Seymour and Margery Wentworth:
- Edward Seymour, 1st Duke of Somerset KG (c.1506-1552).
- Thomas Seymour, 1st Baron Seymour of Sudeley KG (c.1508-1549), married Catherine Parr ( c.1512 – 1548), Dowager Queen of England.
- Jane Seymour, Queen of England (c.1509-1537). Coat of Augmentation granted to her by Henry VIII and subsequently borne by all the Seymours of this line.
- Elizabeth Seymour, Marchioness of Winchester (c.1513-1563).
- Sir Henry Seymour (c.1514 - after 1568).
Viscount Beauchamp, ("of Hache") (1536–1552)
Barons Beauchamp ("of Hache") (1559–1750)
Earls of Hertford (1537,forfeit)
Dukes of Somerset (1547, forfeit 1552 to 1660)
Earls of Hertford (1559-1750)
Barons Beauchamp ("of Hache") (1559–1750)
Marquesses of Hertford (1641-1675)
- Edward Seymour, 1st Viscount Beauchamp, 1st Duke of Somerset, 1st Earl of Hertford KG (1506–1552), forfeit 1552
- Edward Seymour, 1st Earl of Hertford, 1st Baron Beauchamp (1539–1621)
- Edward Seymour, Lord Beauchamp of Hache (1561–1612),married Lady Katherine Grey ( - 1568), the younger sister of Lady Jane Grey.
- William Seymour, 2nd Earl of Hertford, 2nd Duke of Somerset, 1st Marquess of Hertford KG (1587–1660) (restored to the Dukedom of Somerset in 1660)
- William Seymour, 3rd Duke of Somerset, 2nd Marquess of Hertford (1651–1671)
- John Seymour, 4th Duke of Somerset, 3rd Marquess of Hertford (d. 1675)
Dukes of Somerset (1547, forfeit 1552 to 1660, from 1675-1750)
Earls of Hertford (1559-1750, from 1675-1750)
Barons Beauchamp ("of Hache") (1559–1750, from 1675-1750)
Barons Seymour of Trowbridge (1641-1750)
Earl of Northumberland (1749-1750)
Earl of Egremont (1749-1750)
Baron Percy (1722-1750), created by error
- Francis Seymour, 1st Baron Seymour of Trowbridge (c.1590–1664), younger son of Edward Seymour, Lord Beauchamp of Hache (1561–1612)
- Charles Seymour, 2nd Baron Seymour of Trowbridge (c.1621–1665)
- Francis Seymour, 5th Duke of Somerset, 3rd Baron Seymour of Trowbridge (1658–1678)
- Charles Seymour, 6th Duke of Somerset KG (1662–1748), married Lady Elizabeth Percy (1667– 1722), only daughter and heir of Joceline Percy, 11th Earl of Northumberland.
- Algernon Seymour, 7th Duke of Somerset, 1st Baron Percy, 1st Earl of Northumberland, Baron Warkworth, 1st Earl of Egremont, Baron Cockermouth (1684–1750)
- George Seymour, Viscount Beauchamp (1725–1744), only son of the 7th Duke, died without issue.
William Seymour, 2nd Earl of Hertford, 2nd Duke of Somerset, 1st Marquess of Hertford KG (1587–1660)
Seymour of Berry Pomeroy, Baronets (1611)
Dukes of Somerset (1547, forfeit 1552 to 1660, from 1750)
Earl St. Maur (1863-1891)
- Sir Edward Seymour, 1st Baronet (c. 1563–1613), eldest grandson of (by his first marriage).
- Sir Edward Seymour, 2nd Baronet (c. 1580–1659)
- Sir Edward Seymour, 3rd Baronet (1610–1688)
- Sir Edward Seymour, 4th Baronet (1633–1708)
- Sir Edward Seymour, 5th Baronet (1663–1740)
- Sir Edward Seymour, 6th Baronet, 8th Duke of Somerset (1695–1757)
- Edward Seymour, 9th Duke of Somerset (1717–1792)
- Webb Seymour, 10th Duke of Somerset (1718–1793)
- Edward St Maur, 11th Duke of Somerset KG (1775–1855)
- Edward Seymour, 12th Duke of Somerset, 1st Earl St Maur KG (1804–1885)
- Ferdinand Seymour, Earl St Maur (1835–1869), eldest son of the 12th Duke, died without issue
- Archibald Seymour, 13th Duke of Somerset (1810–1891)
- Algernon St Maur, 14th Duke of Somerset (1813–1894)
- Algernon Seymour, 15th Duke of Somerset (1846–1923)
- Duke of Somerset (1860–1931), descendant of the 8th Duke
- Evelyn Seymour, 17th Duke of Somerset (1882–1954)
- Percy Seymour, 18th Duke of Somerset (1910–1984)
- John Seymour, 19th Duke of Somerset (b. 1952)
Barons Conway (1703)
Barons Conway of Killultagh, in the Peerage of Ireland (1712)
Earl of Hertford (1750)
Marquesses of Hertford (1793)
- Francis Seymour-Conway, 1st Baron Conway (1679–1732), third son of Sir Edward Seymour of Berry Pomeroy, 4th Baronet. Francis succeeded to the estates of his mother’s relative Edward Conway, 1st Earl of Conway, and assumed the same year by Royal license the additional surname of Conway.
- Francis Seymour-Conway, 1st Marquess of Hertford, Earl of Yarmouth, 1st Earl of Hertford and Viscount Beauchamp, 2nd Baron Conway KG (1718–1794)
- Francis Ingram-Seymour-Conway, 2nd Marquess of Hertford KG (1743–1822)
- Francis Charles Seymour-Conway, 3rd Marquess of Hertford KG (1777–1842)
- Richard Seymour-Conway, 4th Marquess of Hertford KG (1800–1870)
- Francis Hugh George Seymour, 5th Marquess of Hertford (1812–1884)
- Hugh de Grey Seymour, 6th Marquess of Hertford (1843–1912)
- George Francis Alexander Seymour, 7th Marquess of Hertford (1871–1940)
- Hugh Edward Conway Seymour, 8th Marquess of Hertford (1930–1997)
- Henry Jocelyn Seymour, 9th Marquess of Hertford (b. 1958)
Barons Alcester (1882-1895)
- Frederick Beauchamp Paget Seymour, 1st Baron Alcester (1821–1895), great-grandson of Francis Seymour-Conway, 1st Marquess of Hertford.
Seymour of Langley, Baronets (1681-1714)
- Sir Henry Seymour, 1st Baronet (1674–1714), son of the second son of Sir Edward Seymour of Berry Pomeroy , 2nd Baronet.
Barons Conway (1624-1683)
Viscounts Conway (1627-1683)
Viscounts Killultagh, in the Peerage of Ireland (1627-1683)
Earl of Conway (1679-1683)
- Edward Conway, 1st Baron Conway, 1st Viscount Conway, 1st Viscount Killultagh (1564–1631)
- Edward Conway, 2nd Viscount Conway, 2nd Viscount Killultagh (1594–1655)
- Edward Conway, 1st Earl of Conway, 3rd Viscount Conway, 3rd Viscount Killultagh (1623–1683)