William Marshall Barnes was baptised on 22 February 1801, the son of Thomas (a silver plater) and his wife, Martha.  In 1825, he married Louisa née Fox in Rotherham.   William was a pen knife cutler, who by 1836 was renting a plot of land for building development in Trafalgar Street.  In 1839, he was listed as a pen knife manufacturer at 92 Trafalgar Street.  He died in 1840 (burial untraced) .  In 1841, Louisa (a 30 year-old ‘cutler’) was living alone with her six year-old daughter, Ann, in the same street.  In the Census (1851), Louisa was enumerated in Trafalgar Street as a pen knife manufacturer employing 15 men and four boys.  By 1859, she had moved to Exchange Works, Edgerton Street, where Davy & Sons operated.   Ann died in 1864 and by 1871 Louisa was living in Edgerton Street with her son Thomas (1826-1892), who was a pen blade forger.  Louisa died in Edgerton Street on 8 April 1875, aged 67, and was buried in the General Cemetery.