Battle of Volta Mantovana
1080 CE.
Shown on the map at 45.322°, 10.659°.
The Battle of Volta Mantovana was fought on the 15th of October 1080 between troops raised by the schismatic bishops of Lombardy loyal to the emperor Henry IV and to anti-pope Guibert of Ravenna against forces commanded by Matilda of Tuscany. Margravine Matilda was defeated and the pro-Imperial forces gained the upper hand.
Text from the Wikipedia article Battle of Volta Mantovana (1080), licensed CC BY-SA 4.0.