He married Sarah Clark in 1781 at St Andrew, Holborn; they were both from that parish.
Christenings of their sons Richard in 1787, Peter in 1789 and their daughter Esther in 1792 were all registered at St Luke, Old Street. Two of the records show Crispin as a goldsmith.
His burial aged 69 years, late of St Olave’s, Hart Street, was registered on 19th October 1824 at St Luke's.
The Will of Crispin Fuller, goldsmith late of St Olave, was proved for probate on 24th January 1825 (National Archives reference PROB 11/1694/351).