In 927, a significant political alliance formed when King Constantine II of Scotland, King Hywel Dda of Deheubarth, Ealdred of Bamburgh, and King Owain of the Cumbrians publicly accepted the overlordship of King Æthelstan of England. This meeting likely took place in a strategic location, possibly on neutral ground where leaders could negotiate terms safely and effectively. Æthelstan, known as a unifier of England, aimed to consolidate power in the north to quell regional tensions and instigate economic cooperation among the various kingdoms.

The acceptance of Æthelstan's rule not only solidified his influence but also promised a period of peace, which had been rare during the turbulent 9th century characterized by Viking invasions and inter-kingdom conflicts. Moreover, this agreement can be seen as a key moment in the formation of a more integrated British identity, as individual kingdoms began aligning under a more centralized authority. It laid the groundwork for future political dynamics and alliances in the region.

This era of peace and cooperation lasted for seven years, during which trade flourished, and cultural exchanges took place between the kingdoms. The benefits of this agreement extended beyond mere governance; it also allowed for the facilitation of diplomatic relations and the exchange of resources that would ultimately contribute to the stability of the region. Æthelstan's reign, bolstered by this support, would prove pivotal in the future consolidation of the English nation.