A twelfth-century painting of St Oswald, killed at Maserfield, in Durham Cathedral
Date
5 August 641 or 642
Location
Oswestry
Result
Mercian-Brittonic victory
Belligerents
Kingdom of Mercia Kingdom of Gwynedd Kingdom of Powys
Kingdom of Northumbria
Commanders and leaders
King Penda King Eowa † Prince Cynddylan
King Oswald †
Strength
2,000 Mercian forces 1,200 Powysian forces
1,000
Casualties and losses
100 Mercians killed 600 Powysian fighters killed
Heavy, 800 killed
v
t
e
Anglo-Saxon invasions and the founding of England
Timeline
Groans of the Britons
Guoloph
Aylesford
Treason of the Long Knives
Wippedesfleot
Mercredesburne
Badon
Beranburh
Alclud Ford
Argoed Llwyfain
Deorham
1st Wodensburh
Raith
Catraeth
Degsastan
Chester
Cirencester
Cefn Digoll
Caer-Uisc
Hatfield Chase
Heavenfield
Maserfield
Winwaed
Peonnum
Two Rivers
Trent
Nechtansmere
2nd Wodensburh
Hehil
Pencon
Hereford
Otford
Bensington
Ellandun
Hingston Down
Scotland
Brunanburh
The Battle of Maserfield, a corruption of the Welsh Maes Elferth (Elferth's field, also Welsh: Cad Maes Cogwy) was fought on 5 August 641 or 642 (642 according to Ward[1]) between the Anglo-Saxon kings Oswald of Northumbria and Penda of Mercia allied with Welsh Kingdom of Gwynedd, ending in Oswald's defeat, death, and dismemberment. The location was also known as Cogwy in Welsh, with Welshmen from Pengwern participating in the battle (according to the probably ninth-century Canu Heledd), probably as allies of the Mercians. Bede reports the commonly accepted date given above; the Welsh Annales Cambriae is generally considered incorrect in giving the year of the battle as 644. The site of the battle is traditionally identified with Oswestry.
^Ward, Richard (2020). "The Battle of Maserfeld 5th August AD 642" (PDF). sthelens.gov.uk. Retrieved 5 August 2021.
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