Carl Gustaf Mannerheim (naturalist)

Count Carl Gustaf Mannerheim (10 August 1797 – 9 October 1854) was a Finnish nobleman, amateur entomologist and governor of the Viipuri province in the Grand Duchy of Finland. He collected beetles from across the Arctic region from Alaska to Russia through northern Scandinavia making use of a network of aristocratic amateurs and Finnish settlers resulting in a personal collection of nearly 100000 specimens of beetles representing 20,000 species made over a period of 40 years. Provided by Wikipedia