found: His The trials at large of Joseph Merceron, Esq. for fraud ... 1819.
found: The boss of Bethnal Green, 2016:p. 10 (... on Sunday 29th January 1764 Joseph Merceron was born on Brick Lane), p. [4] of cover (Joseph Merceron (1764-1839), gangster and corrupt magistrate, who accumulated enormous wealth while presiding over the creation of the poorest slums in Georgian London)
found: Oxford Dictionary of National Biography online, accessed 2017-06-14:(Merceron, Joseph (c.1764-1839), parochial politician, was reputedly born, and certainly grew up, in Brick Lane, Bethnal Green, London ... He died in Bethnal Green on 14 July 1839)