Franz Wilhelm Sieber
Sieber, Franz Wilhelm
Franz Wilhelm Sieber (1789-1844) was born in Prague and became a widely-travelled botanist, plant collector and explorer.
According to Thorwald C. Franke [1255.352] Sieber favoured Atlantis in the Americas and offered discoveries in Trinidad to support this idea.
Sadly, Sieber was an eccentric person who eventually deteriorated into complete madness, ending his days in a Prague insane asylum(a).