Births on April 15

Hermann Grassmann

Born on April 15, 1809

Hermann Grassmann, German linguist and mathematician (d. 1877)

Hermann Günther Grassmann (German: Graßmann, pronounced [ˈhɛʁman ˈɡʏntɐ ˈɡʁasman]; 15 April 1809 – 26 September 1877) was a German polymath, known in his day as a linguist and now also as a mathematician. He was also a physicist, general scholar, and publisher. His mathematical work was little noted until he was in his sixties.

References

Hermann Grassmann

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Events on 1809

16 Jan

Battle of Corunna
Peninsular War: The British defeat the French at the Battle of La Coruña.
10 Apr

War of the Fifth Coalition
Napoleonic Wars: The War of the Fifth Coalition begins when forces of the Austrian Empire invade Bavaria.
20 Apr

Battle of Abensberg
Two Austrian army corps in Bavaria are defeated by a First French Empire army led by Napoleon at the Battle of Abensberg on the second day of a four-day campaign that ended in a French victory.
17 May

Papal States
Emperor Napoleon I orders the annexation of the Papal States to the French Empire.
5 Jul

Battle of Wagram
The largest battle of the Napoleonic Wars, the Battle of Wagram is fought between the French and Austrian Empires.

Births on April 15

Hermann Grassmann

Born on April 15, 1809

References

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Events on 1809

Battle of Corunna

War of the Fifth Coalition

Battle of Abensberg

Papal States

Battle of Wagram