John of Gaunt,1st Duke of Lancaster, Duke of Aquitaine
Katherine Swynford née (de) Roet
Children of John of Gaunt, (1340-1399), 1st Duke of Lancaster, Duke of Aquitaine, third son of King Edward III and Katherine Swynford née (de) Roet (1350-1403).
John and Katherine married in 1396. The four children Katherine had borne John of Gaunt had been given the surname "Beaufort" and were already adults when they were legitimised by this marriage with approval by King Richard II. The Beauforts were later barred from inheriting the throne by a clause inserted into the legitimation act by their half-brother, Henry IV.
- John Beaufort, 1st Earl of Somerset(1373-1410)
- Henry Beaufort, Cardinal (1375-1447) dsp
- Thomas Beaufort, Duke of Exeter KG (1377-1426) dsp
- Joan Beaufort, Countess of Westmorland (1379-1440)

Beaufort Arms before 1396

John Beaufort, 1st Earl of Somerset KG

Henry Beaufort, Cardinal Beaufort

Thomas Beaufort, Duke of Exeter KG
Earls of Somerset in the Peerage of England (1397–1471)
Dukes of Somerset in the Peerage of England, first Creation (1443–1471)
Dukes of Somerset in the Peerage of England, second Creation (1448–1471)
Dukes of Somerset
- John Beaufort,(1373-1410), 1st Earl of Somerset, Marquess of Dorset KG
- Henry Beaufort, (1401–1418) 2nd Earl of Somerset.
- John Beaufort, (1404–1444) 1st Duke of Somerset, 3rd Earl of Somerset.
- Edmund Beaufort, 1st (or 2nd) Duke of Somerset KG, 4th Earl of Somerset
- Henry Beaufort, (1436–1464) 2nd (or 3rd) Duke of Somerset , title forfeit
- Edmund Beaufort,(c. 1439–1471) 3rd (or 4th) Duke of Somerset KG
Earls of Worcester in the Peerage of England (1514)
Marquesses of Worcester in the Peerage of England (1642)
Dukes of Beaufort in the Peerage of England (1682)

1st Earl of Worcester KG
- Charles Somerset, (c. 1450–1526) 1st Earl of Worcester KG, Son of Henry Beaufort, 2nd (or 3rd) Duke of Somerset (1436–1464) and Joan Hill. The supporters of a panther and a dragon were derived from the Herberts and continue to this day.
- Henry Somerset, (c. 1495–1548) 2nd Earl of Worcester, 4th Baron Herbert
3rd Earl of Worcester KG
- William Somerset, (d. 1589) 3rd Earl of Worcester, 5th Baron Herbert KG
4th Earl of Worcester KG
- Edward Somerset, (1553–1628) 4th Earl of Worcester, 6th Baron Herbert KG
1st Marquess of Worcester
- Henry Somerset, (1577–1646) 1st Marquess of Worcester, 5th Earl of Worcester 7th Baron Herbert
- Edward Somerset, (1601–1667) 2nd Marquess of Worcester, 8th Baron Herbert
1st Duke of Beaufort KG
- Henry Somerset, (1629–1700) 1st Duke of Beaufort, 3rd Marquess of Worcester, 9th Baron Herbert KG
2nd Duke of Beaufort KG
- Henry Somerset, (1684–1714) 2nd Duke of Beaufort, 10th Baron Herbert KG
- Henry Somerset, (1707–1745) 3rd Duke of Beaufort, 11th Baron Herbert
- Charles Noel Somerset,(1709–1756) 4th Duke of Beaufort, 12th Baron Herbert
5th Duke of Beaufort KG
- Henry Somerset,(1744–1803) 5th Duke of Beaufort, 13th Baron Herbert, 5th Baron Botetourt KG
6th to 10th Dukes of Beaufort KG
- Henry Charles Somerset,(1766–1835) 6th Duke of Beaufort, 14th Baron Herbert, 6th Baron Botetourt KG
- Henry Somerset,(1792–1853) 7th Duke of Beaufort, 15th Baron Herbert, 7th Baron Botetourt KG
- Henry Charles Fitzroy Somerset,(1824–1899) 8th Duke of Beaufort, 16th Baron Herbert, 8th Baron Botetourt KG
- Henry Adelbert Wellington Fitzroy Somerset,(1847–1924) 9th Duke of Beaufort, 17th Baron Herbert
- Henry Hugh Arthur Somerset, (1900–1984) 10th Duke of Beaufort, 18th Baron Herbert, 10th Baron Botetourt KG
- David Robert Somerset, (1928-2017) 11th Duke of Beaufort
- Henry John FitzRoy Somerset, (b. 1952) 12th Duke of Beaufort
Viscount Somerset in the Peerage of Ireland (1626–1649)
1st Viscount Somerset
- Thomas Somerset, (1579–1649) 1st Viscount Somerset, second son of Edward Somerset, 4th Earl of Worcester.
Barons Raglan in the Peerage of the United Kingdom (1852)
Barons Raglan
- FitzRoy James Henry Somerset,(1788–1855) 1st Baron Raglan, ninth son of Henry Somerset, 5th Duke of Beaufort.
- Richard Henry FitzRoy Somerset, (1817–1884), 2nd Baron Raglan
- George FitzRoy Henry Somerset, (1857–1921) 3rd Baron Raglan
- FitzRoy Richard Somerset, (1885–1964) 4th Baron Raglan
- FitzRoy John Somerset, (b.1927) 5th Baron Raglan