Edwin would eventually ally himself with Rædwald of East Anglia in 616, defeating and killing Æthelfrith and becoming one of Northumbria's most successful kings.
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What is known from history is that in 588 King Ælla of Deira died, and Æthelfrith of Bernicia took the opportunity to invade and conquer Deira, driving Ælla 's 3-year old infant son, the future Edwin of Northumbria, into exile.
The 12th-century writer Geoffrey of Monmouth said that Edwin was born whilst his mother was taking refuge in north Wales with Cadfan ap Iago.
Iago | Saint Cadfan | Iago Sparrow | St Cadfan's Church, Tywyn | St Cadfan's Church | Iago (Aladdin) | Cadfan ap Iago | Cadfan |