John Marshall was baptized 28 November 1756 in the parish church of St Mary Aldermary, London, the son of Richard Marshall (fl 1752-1779) and his wife Ellenor [REF].
John married Eleanor Blashfield 4 December 1788; they had two children, Eleanor Elizabeth born 8 March 1790 and John born 28 May 1792 [REF].