Battle of Ashendon

The place [Ashendon] appears to have been of some importance in Saxon times, as it is frequently mentioned, according to Browne Willis, in ancient chronicles. About the year 872, the Danes suffered a most severe defeat here by an army led by King Ethelred and Alfred his brother, who afterwards threw up entrenchments and earth-forts around it, and so for some years prevented a recurrence of the evil [view poem by J. M. Neale]. In the year 1016, however, Eadnoth or Adnoth, Bishop of Dorchester (Oxon), formerly a Prior or Abbot of Ramsay, was slain in a battle with the Danes. This village and all the neighbourhood was then in the diocese of Dorchester, and not for some centuries afterwards in that of Lincoln. It has lately, together with the whole of the County of Bucks, been placed under the jurisdiction of the Bishop of Oxford.

'Records of Bucks - Vol.1' (pp 134-135)