1768-1816, active 1789-1816, mathematical, optical and philosophical instrument maker, English Barnett, Thomas 1768 - 1816
1768-1852, maker of clocks, watches, and nautical instruments, London, England Massey, Edward 1768 - 1852
1768-1844, military doctor; head of Prussian Army Medical Service, German Buttner, Johann Arnold Josef 1768 - 1844
1768-1843, mathematician; astronomer; inventor of the eidograph, Scottish; British Wallace, William 1768 - 1843
1768-1854, physician to the Russian military, nobility and Tsar, British; Scottish Wylie, Sir James 1768 - 1854