Most Sheffield Bowie knife-makers remain frustratingly anonymous and none committed their thoughts to paper. None that is, but one: William Carson Corsan (1824-1876). He was born on 11 November 1824, the son of a nonconformist Scot, William Corsan (d. 9 February 1869, aged 69), and his wife, Margaret. William Sen. was a successful Sheffield draper. William Jun. had intellectual inclinations and in 1850 lectured the Sheffield Phrenological Society on ‘Phrenology in Relation to the Sou....