Thomas Courtenay 5th Earl of Devon  24,25
- Born: 1414
- Marriage: Margaret Beaufort Countess Devon  after 1421
- Died: 3 Feb 1457, Abingdon Abbey, Oxford at age 43
The Complete Peerage vol.IV,p.327.
Noted events in his life were:
• Acceded, 1422.
Thomas married Margaret Beaufort Countess Devon  [MRIN: 8460], daughter of John of Somerset de Beaufort 1st Earl of Somerset  [99R3-YGJ] and Margaret Holland Duchess of Clarence  [L6Q2-QY1], after 1421. (Margaret Beaufort Countess Devon  was born about 1409 in Westminster, Middlesex, England, died in Nov 1449 and was buried in Colyton Shurch, Devon.)