Emil Hans Willi Hennig was a German biologist who is considered the founder of phylogenetic systematics, also known as "cladistics". With his works on evolution and systematics he revolutionised the view of the natural order of beings. As a taxonomist, he specialised in dipterans (ordinary flies and mosquitoes). Wikipedia
The definitive Wikipedia entry for Willi Hennig. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Willi_Hennig
Willi Hennig was born April 20, 1913, in the village of Drrhennersdorf, southern Upper Lusatia (east of Dresden), Germany, and he died November 5, 1976, Ludwigsburg, Germany. www.cladistics.org/about/hennig.html
