Son of Christopher Barker of Pemberton Row, Gough Square, London Silversmith. Apprenticed to William Fearn of Paternoster Row spoonmaker 5 December 1787 on payment of £5 of the Charity of Christ's Hospital London. First Mark entered in partnership with his father  as spoon-makers, 11 October 1800.  Address : 9 Cross Street , Hatton Garden. Second mark, on moving to Kirby  Street, Hatton Garden , 8 December 1804. Third Mark alone, 7 February 1805, same address. Fourth mark ( two sizes) 17 July 1811. Fifth mark ( two sizes) 1 December 1819.