Battle of Cefn Digoll

{{Short description|Battle fought in 630 at Long Mountain near Welshpool in modern-day Wales}}

{{Use dmy dates|date=March 2020}}

{{Infobox military conflict

| image =

| caption =

| conflict = Battle of Cefn Digoll

| partof =

| date = {{circa}} 630

| place = Long Mountain near Welshpool, Wales

| coordinates = {{coord|52|39|N|3|04|W|display=title|region:GB_type:mountain_source:GNS-enwiki}}

| result = Gwynedd-Mercian victory

| territory = Northumbrian domination of Gwynedd ended

| combatant1 = Kingdom of Gwynedd
Kingdom of Mercia

| combatant2 = Kingdom of Northumbria

| commander1 = Cadwallon ap Cadfan
Penda of Mercia

| commander2 = Edwin of Northumbria

| strength1 = Unknown

| strength2 = Unknown

| casualties1 = Unknown

| casualties2 = Unknown|

}}

{{Campaignbox Anglo-Saxon invasions}}

The Battle of Cefn Digoll, also known as the Battle of the Long Mynd was fought in 630 at Long Mountain near Welshpool in modern-day Wales. The battle was fought between the Northumbrian army of King Edwin of Northumbria and an anti-Northumbrian alliance between King Cadwallon of Gwynedd and Penda of Mercia.{{cite book|year= 2002 |publisher= Routledge |location= London, New York |first= D. P. |last= Kirby |title= The Earliest English Kings |url= https://books.google.com/books?id=wCQqKQIrSYUC |isbn= 9780415242110}}{{rp|71}} The battle ended the Northumbrian domination of Gwynedd, and preceded a Welsh campaign into Northumbria, which led to Edwin's death at the Battle of Hatfield Chase.