1781-1868, natural philosopher and academic administrator, Scottish; British Brewster, Sir David 1781 - 1868
1781-1873, instrument maker; artist; optical inventor, English; British Varley, Cornelius 1781 - 1873
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
active 1808-1847, compass maker; optician & mathematical, philosophical instrument maker, London, England, British Bate, Robert Brettell 1782 - 1847
active, 1810-1837, optician, mathematical & philosophical instrument maker, Dublin, Ireland Mason, Thomas 1781 - 1837
1780-1847, lecturer, minister, social reformer, author, Scottish, British Chalmers, Thomas 1780 - 1847
1781-1826, physician; inventor of the monaural stethoscope, French Laennec, René Théophile Hyacinthe 1781 - 1826