William Earl of Devon De Courtenay
William Earl of Devon was born in 1474 in Powderham Castle, Devon.¹   He died at the age of 11 in September 1485 in Powderham, Devonshire, England.² 

 Catherine Plantagenet Of York
Catherine was born on August 14th, 1479 in Eltham Palace,Kent,England.³   She died at the age of 48 on November 15th, 1527 in Tiverton Castle,Devon,England.³ 

 Margaret De Courtenay
Margaret was born about 1499.^3 4