On 05 Aug 641 (or 642 or 644 depending on the source) Penda King Mercia Mercian and Welsh army defeated the Northumbrian army at the Battle of Maserfield. The battle is believed to have taken place at Oswestry. Northumbria was once again separated into two kingdoms.
On 15 Nov 655 Aethelwald King Deira (13) , an ally of Penda King Mercia, withdrew his forces at Cock Beck during the Battle of the Winwaed, one of many Mercian allies to do so, weakening Penda King Mercia's army.
Penda King Mercia and Cynewise Unknown were married