By 1796, Thomas Sansom (1756-1836) was established as a table knife manufacturer in Norfolk Street. In 1808, he registered a silver mark. His wife, Martha (1758-1822), bore him a daughter (Anne) and four sons: William (1782-1841), Thomas (1784-1815), Abraham (1786-1838), and John (1789-1859). The Sheffield Independent, ‘Notes & Queries’, 25 September 1875, provided precise details on their births. For example, William was born on 29 January 1782, ‘at a quarter before eleven o&rsq....