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 

 Henry De Courtenay
Henry was born in 1496 in Colcombe Castle, Devonshire, England.¹   He died at the age of 43 on June 8th, 1539 in Tower Hill, London, Middlesex, England.¹ 

 Edward De Courtenay
Edward was born in 1497.¹