Battle of Nibley Green
1469 CE.
Shown on the map at 51.660°, -2.398°.
The Battle of Nibley Green was fought near North Nibley in Gloucestershire on 20 March 1470, between the troops of Thomas Talbot, 2nd Viscount Lisle and William Berkeley, 2nd Baron Berkeley. It is notable for being the last battle fought in England entirely between the private armies of feudal magnates.
Text from the Wikipedia article Battle of Nibley Green, licensed CC BY-SA 4.0.