Willi Hennig

German biologist (1913–1976).

Born April 20th, 1913 in Dürrhennersdorf.

Died November 5th, 1976 at 63 years old in Ludwigsburg.

Occupations
biologist, entomologist, university teacher, writer, zoologist
Wikipedia

The hardest thing you overcome are the ones that give the most meaning. Maxime Lagacé