Original: Friedrich Wilhelm Heinrich Alexander Freiherr von Humboldt ( September 14 , 1769 -- May 6 , 1859 ) was a German naturalist and explorer , and the younger brother of the Prussian minister , philosopher and linguist Wilhelm von Humboldt ( 1767 â '' 1835 ) .
Simplified: Alexander von Humboldt ( Berlin , 14 September 1769 â '' Berlin , 6 May 1859 ) was a Prussian naturalist and explorer .