West India merchant
J.H. Deffell and John Deffell & Son traded in parallel. The firms' original partners were John Deffell and John Henry Deffell, and from c. 1812 'in particular concerns' Richard Shawe a London solicitor and brother-in-law of John Henry Deffell.
Will of Richard Shawe of Dulwich Hill Surrey proved 27/11/1816, PROB 11/1586/212