Æthelred I of Northumbria, King of Northumbria from 774 to 779 and again from 788 or 789 until his murder in 796
After his victory, Æthelwald married Æthelthryth at Catterick on 1 November 762.
Northumbria | Siward, Earl of Northumbria | Edwin of Northumbria | Æthelred the Unready | Oswald of Northumbria | Æthelfrith of Northumbria | Waltheof, Earl of Northumbria | Oswiu of Northumbria | Ecgfrith of Northumbria | Earl of Northumbria | Osberht of Northumbria | Northumbria University | Gospatric, Earl of Northumbria | The Northumbria Anthology | Osric of Northumbria | English of Northumbria | Coenred of Northumbria | Aldfrith of Northumbria | Æthelred of Wessex | Æthelred of Mercia | Æthelred I of Northumbria | 2010 Northumbria Police manhunt |
Ælfflæd of Mercia, daughter of Offa, wife of King Æthelred I of Northumbria