Thomas de Courtenay, 13th Earl of Devon English nobleman of the Wars of the Roses (1414–1458) Parents Anne Talbot Hugh de Courtenay, 4th Earl of Devon Children Elizabeth Courtenay Agnes Courtenay John Courtenay, 15th Earl of Devon Thomas Courtenay, 14th Earl of Devon Joan Courtenay Henry Courtenay Partners Margaret Beaufort, Countess of Devon