Jan Simon Gerardus Gramberg
Jan Simon Gerardus Gramberg was a Dutch author, military physician, plantation owner and adventurer, who lived and worked in the Dutch Gold Coast and the Dutch East Indies, and who wrote several works about these places.
Gramberg was born in Maastricht to Johan Gramberg and Adriana Grond. After graduating with a medical degree in Utrecht, Gramberg was installed as a medical officer on the Dutch Gold Coast by royal decree datedNovember 1855. In Africa, he proved himself to be quite an adventurous man, travelling along the coast and the interior and eventually founding a cotton plantation on the Bossumprah river, on the road to British Komenda. About his period in Africa, which lasted from 1856 and 1859, he wrote a bestselling book titled Schetsen van Afrikas Westkust.
Source: Wikipedia