claim: The king of Northumbria, who possibly became king while still a child, attempted to have Eardwulf of Northumbria assassinated was AEthelred I.
supporting_facts.key: Eardwulf of Northumbria
supporting_facts.key: Eardwulf of Northumbria
supporting_facts.key: Æthelred I of Northumbria
supporting_facts.key: Æthelred I of Northumbria