John de Courtenay
John was born in 1377 in Powderham Castle, Devon, Eng.  He died at the age of 29 in 1406 in Exeter, Devon, Eng.

 Joane Champernowne
Joane was born in 1385 in Bere Ferrers, Devon, Eng.  She died at the age of 34 in 1419.

 Sir Philip de Courtenay
Sir Philip was born in 1404 in Ashton, Devon, Eng .  He died at the age of 34 in 1438 in Powderham, Devon, Eng.

 Sir Humphrey Courtenay
Sir Humphrey was born in 1406 in Powderham Castle, Devon, Eng.