Portal:Germany/Anniversaries/September/September 17
Appearance
![Bernhard Riemann](http://upload.wikimedia.org/wikipedia/commons/thumb/8/82/Georg_Friedrich_Bernhard_Riemann.jpeg/100px-Georg_Friedrich_Bernhard_Riemann.jpeg)
- 1179 – Death of Hildegard of Bingen
- 1826 – Birth of mathematician Bernhard Riemann
- 1916 – Red Baron Manfred von Richthofen wins his first aerial combat
- 1966 – Death of tenor Fritz Wunderlich