Johann Christian Ludwig Hellwig (November 8, 1743, Garz/Rügen - October 10, 1831 Braunschweig) was a German entomologist.
After studies of mathematics and natural history at the university of Frankfurt, he became, in 1766, adviser to prince Wilhelm Adolf von Braunschweig at the time of his voyage in the south of Russia.
In 1771, he taught in two colleges of Brunswick then he became professor of philosophy of the university of Helmstadt. In 1790, he taught mathematics and natural science at the military academy of Braunschweig.
He exerted a great influence on his pupils. He was the tutor and the father-in-law of the German entomologist Johann Karl Wilhelm Illiger (1775-1813), who became director of the zoological garden of Berlin, of the mineralogist Gottlieb Peter Sillem (who succeeded him at the school of Braunschweig) and the count Johann Centurius Hoffmannsegg (1766-1849).
His work in the taxonomy of the insects in collaboration with Illiger and Hoffmannsegg is famous and was the entomological origin of the collections of the University of Berlin.
from Wikipedia entry
Also the designer of the abstract wargame from 1780: "Versuch eines aufs Schachspiel gebaueten taktischen Spiels von zwey und mehrern Personen zu spielen" (An Attempt at a chess-based tactical game to be played by two or more persons).
A revised edition of the rulebook appeared in 1803.