. . . . . . . "John Courtenay" . "Sir John Courtenay" . "John de Courtenay" . . "John Courtenay, 15th Earl of Devon" . . . . . . "John Courtenay, 15th Earl of Devon" . . . "1471-05-04" . . . . . . . . . "John Courtenay, 15th/16th Earl of Devon" . . "John Courtenay, 7th/15th Earl of Devon" . . . . . . . "John Courtenay, Earl of Devon" . . . "John, Earl of Devon" . . . . . . . "Earl of Devon" . "John" .