William Paston, of Horton

John V Courtenay (1687–1732) (3rd and eldest surviving son), married Margaret Giffard (died 1743), daughter and sole heiress of John Giffard (1667/8-1704) of Brightley in the parish of Chittlehampton and lord of the manor of Chittlehampton. The marriage was without progeny, and thus John V was the last male of the Courtenays of Molland.

His heir was his sister Mary Courtenay (1687-1747), the first wife of William Paston (1701–1769) of Horton Court in Gloucestershire, who married secondly in 1751 Mary Chichester, his widow's sister's sister-in-law.