John Beaufort, 1st Earl of Somerset

Earl of Somerset (1373–1410)

Parents

• Katherine Swynford
• John of Gaunt

Children

• John Beaufort, 1st Duke of Somerset
• Edmund Beaufort, 2nd Duke of Somerset
• Margaret Beaufort, Countess of Devon
• Thomas Beaufort, Count of Perche
• Henry Beaufort, 2nd Earl of Somerset
• Joan Beaufort

Siblings

• Henry Beaufort
• Thomas Beaufort, Duke of Exeter
• Henry IV of England
• Thomas Swynford
• Elizabeth of Lancaster, Duchess of Exeter
• Joan Beaufort, Countess of Westmorland
• Philippa of Lancaster
• Catherine of Lancaster
• Blanche Swynford
• Blanche Plantagenet
• John Plantagenet
• John Plantagenet
• John of Lancaster
• Edward Planatagenet

Partners

• Margaret Beaufort, Countess of Somerset