John COURTENAY

 Joan CHAMPERNOWNE
Joan was born in 1382.  She died at the age of 37 in 1419.

 Philip COURTENAY
Philip was born in 1403 in Powderham Castle, Devon.  He died at the age of 60 on December 16th, 1463.  He was buried in Powderham, Devon.

 Humphrey COURTENAY
Humphrey was born about 1405.