Today in the Middle Ages: May 20, 635

On May 20, 635, an invading Northumbrian army was soundly trounced by the Picts under the command of King Bridei.

The Northumbrians had been extending their power north for decades under their ambitious king, Ecgfrith. King Bridei proved himself superior in strategy, drawing the Northumbrians in with a pretended retreat. The Northumbrians never recouped their former power in the north, and Bridei's victory encouraged the development of Scotland's national identity.