What is Battle of Hatfield Chase?
{{Infobox Military Conflict |conflict = Battle of Hatfield Chase |partof = |image = Saint King Edwin of Northumbria.jpg |caption = {{center|Depiction of Edwin at St Mary, Sledmere, Yorkshire.}} |date = 12 October 633 AD |place = [[Hatfield Chase]], [[Yorkshire]] |casus = |territory = |result = Gwynedd-Mercian victory |combatant1 = [[File:Flag of Gwynedd.svg|70px]][[File:Saint Alban's cross.svg|70px]]<br>[[Gwynedd]], [[Mercia]] |combatant2 = [[File:Flag of Northumbria.svg|70px]]<br>[[Northumbria]] |commander1 = [[Cadwallon ap Cadfan]]<br>[[Penda of Mercia|Penda]] |commander2 = [[Edwin of Northumbria|Edwin]]{{KIA}}<br>Osfrith{{KIA}}<br>Eadfrith {{POW}} |strength1 = |strength2 = |casualties1 = |casualties2 = }} [[File:Britain peoples circa 600.svg|thumb|300px|Britain in ~600[[AD]]]] The '''Battle of Hatfield Chase''' was fought on 12 October 633 at [[Hatfield Chase]] near [[Doncaster]] in present-day [[Yorkshire]]. The [[pagan]] King [[Penda of Mercia]] and the [[Christian]] king of Gynedd, [[Cadwallon ap Cadfan]] joined forces to attack [[Northumbria]]. King [[Edwin of Northumbria|Edwin]] met them in the southern part of his [[kingdom]]. In the battle Edwin was killed and his army was defeated. Cadwallon destroyed as much of Northumbria as he could. This led to the end of Northumbrian dominance over southern England for a short time. == Background == Edwin of Northumbria (ruled 616–633) was recognized as [[:wikt:overlord|overlord]] over all of [[Britain]].<ref name=Stenton80>Frank Stenton, Anglo-Saxon England (Oxford University Press, 1971), p. 80</ref> In his wars he conquered the kingdom of [[Elmet]] (western [[Yorkshire]]). He then drove out its king, Cerdic. This gave him access all the way to the [[Irish Sea]].<ref name=Blair192>Peter Hunter Blair, ''Roman Britain and Early England 55 B.C.–A.D 871'' (New York; London: W. W. Norton & Company, 1963), p. 192</ref> Elmet was one of the last kingdoms of the [[Britons (Celtic people)|Britons]].<ref name=Blair192/> Edwin next moved against [[Wales]]: he invade