 The elder son, William, who worked as clerk-assistant of the parliament, became in 1835 the 10th Earl of Devon; the younger son was Thomas Peregrine Courtenay.A monument to Bishop Reginald Courtenay exists in Powderham Castle, seat of the Earl of Devon, in the Victorian Dining Hall, built between 1847 and 1860, in the form of a heraldic chimneypiece.It is copied from the mediaeval chimneypiece in the Bishop's Palace, Exeter, installed c.1485 by Peter Courtenay (d.1492) Bishop of Exeter, a younger son of Sir Philip Courtenay (1404–1463) of Powderham.