Battle of Almodóvar del Río
1091 CE.
Shown on the map at 37.800°, -5.017°.
The battle of Almodóvar del Río was a military engagement between the Almoravids and the Castilian forces who attempted to relieve Seville. The Castilians were defeated and routed.
Text from the Wikipedia article Battle of Almodóvar del Río, licensed CC BY-SA 4.0.