Queen Ælfflæd of Northumbria

Queen Ælfflæd of Northumbria was born to King Offa of Mercia and Cynethryth Queen Mercia.

On 29th September 792 Æthelred I of Northumbria [aged 30] and Queen Ælfflæd of Northumbria were married. She by marriage Queen Northumbria. She the daughter of King Offa of Mercia and Cynethryth Queen Mercia. He the son of Æthelwald Moll King of Northumbria.

Anglo-Saxon Chronicle. and Osred, who had been king of the Northumbrians, returning home after his exile, was apprehended and slain, on the eighteenth day before the calends of October. His body is deposited at Tinemouth. [her husband] Ethelred [aged 32] this year, on the third day before the calends of October, took unto himself a new wife, whose name was Elfleda.

On 18th April 796 [her husband] Æthelred I of Northumbria [aged 34] died.