[2][3] His sister, Frances Lawrance Venables-Vernon, married Maurice Raoul-Duval and his elder brother, George Francis Augustus Venables-Vernon, 8th Baron Vernon, died in 1915 from illness contracted while on service in Gallipoli.
[1] During World War I, he fought in the North Sea and Mediterranean, gaining the rank of Lieutenant-Commander in the Royal Navy.
[5] Upon the death of his elder brother on 10 November 1915, he succeeded as the 9th Baron Vernon, along with around 10,000 acres (4,000 ha) of land in Cheshire, Derbyshire and Staffordshire.
[6] Together, they were the parents of:[1] Lord Vernon died at Sudbury Hall on 18 March 1963 at age 73.
[5] Four years after his death, his son John gifted the family seat, Sudbury Hall, to the National Trust in 1967.