King Oswald and his Northumbrian army besiege…
638 CE
King Oswald and his Northumbrian army besiege and conquer Edinburgh.
His half-brother, Oswiu of Bernicia, marries princess Rhiainfelt, heiress of North Rheged ("Old North").
Northumbria embraces North Rheged in a peaceful takeover and Oswiu becomes a sub-king.
Oswald devotes his energies to securing the borders of his united Northumbrian kingdom and extending his authority southward.