Battle of Valtierra
1110 CE.
Shown on the map at 42.195°, -1.634°.
The battle of Valtierra was fought between forces from Navarre–Aragon and Zaragoza on 24 January 1110 (1 Rajab 503 AH). The Navarrese defenders were victorious and the king of Zaragoza, al-Musta'in II, was killed. Late in 1109, al-Musta'in had the citizens of Zaragoza swear an oath of fidelity to him and recognize his son, Imad al-Dawla, as his successor. Early in January 1110, he personally led a raid into Navarre. Passing through Tudela, he attacked a nearby town, seizing its outskirts and forcing its inhabitants to take refuge in a fortified church. The name of the town as recorded in the Arabic sources is uncertain and possibly corrupted. The most likely places are Oñati or Olite. Arnedo is another possible reading, but does not match the description of the town as a square with no defences besides the church. After a brief siege, the townspeople agreed to pay tribute and give hostages. During his subsequent march homeward, al-Musta'in sent raiding parties into the countryside. Near Valtierra, he was attacked by a force of Navarrese and Aragonese knights. Valtierra was at that time in Zaragozan hands.
Text from the Wikipedia article Battle of Valtierra, licensed CC BY-SA 4.0.