1780-1872, polymath; science writer; mathematics expositor, British Somerville, Mary Fairfax 1780 - 1872
active early 1800s, die-engraver; manufacturer of buttons; manufacturer of medals; manufacturer of tokens; medallist, British Halliday, Thomas 1780 - 1855
1780-1847, lecturer, minister, social reformer, author, Scottish, British Chalmers, Thomas 1780 - 1847