The Battle of Tettenhall

In 910, a joint Mercian and Wessex army marched north and the Danes and Vikings suffered a major defeat at Tettenhall near Wolverhampton. Ethelred died the following year after a long illness, possibly resulting from war wounds, and his wife Ethelfleda, who had led Mercia during his illness, formally took over the Mercian leadership. The Mercia/Wessex alliance developed a new offensive strategy, one aimed at permanently regaining Mercian territory