Marianne married John VIVIAN of Claverton Manor, Esq., son of Matthew VIVIAN of Camborne & Penelewey in Kea and Jane BENNETT, on 25 Oct 1792 in Westbury on Trim, Gloucestershire, England. (John VIVIAN of Claverton Manor, Esq. was born in 1756 in Kea, Cornwall, christened on 19 Apr 1756 in Kea, Cornwall, died on 3 Jan 1828 and was buried on 10 Jan 1828 in Middle Temple Vault, Temple Church.)