Battle of Portomaggiore
1395 CE.
Shown on the map at 44.700°, 11.800°.
The Battle of Portomaggiore took place near Portomaggiore in the province of Ferrara, Italy on 16 April 1395. It was fought between the Este troops of the Ferrara Regency Council fighting in the name of the young Niccolò III d'Este, Marquis of Ferrara and the rebel forces of his uncle, Azzo X d'Este, pretender to the Lordship of Ferrara.
Text from the Wikipedia article Battle of Portomaggiore, licensed CC BY-SA 4.0.