Beaufort
- Margaret Beaufort, daughter of John Beaufort, 1st Duke of Somerset and Margaret Beauchamp.
- John Beaufort, 1st Duke of Somerset, son of John Beaufort, 1st Earl of Somerset and Margaret Holland.
- John Beaufort, 1st Earl of Somerset, son of John of Gaunt and Katherine Swynford.
Read more about this topic: Genealogy Of The British Royal Family