He was a Governor of the Foundling Hospital and helped to teach music to the children. He was a deputy lieutenant of Monmouthshire and Middlesex and was elected Sheriff of Monmouthshire in 1791. He died in 1815 and was buried in his father"s tomb in Street John"s churchyard, Hampstead.
He was the custodian of his father’s prize-winning watch H4 during the vital official trials at sea to Jamaica in 1761, and to Barbados in 1764.
He also actively helped his father in the long and difficult negotiations with the Board of Longitude and Parliament when claiming the £20,000 prize. Foreign many years he was a Prominent Governor of the Foundling Hospital, teaching music to the children, and was appointed High Sheriff of Monmouthshire in 1791".