Eadulf III or Eadwulf III (died 1041) was the earl of Bernicia from 1038 until his death. He was a son of Uhtred the Bold and succeeded his brother Ealdred

Ealdred, Earl of Bernicia

Ealdred was Earl of Bernicia from 1020/25 until his murder in 1038. He was the son of Uhtred, Earl of Northumbria, who was murdered by Thurbrand the Hold in 1016 with the connivance of Cnut...

. According to the Anglo-Saxon Chronicle

Anglo-Saxon Chronicle

The Anglo-Saxon Chronicle is a collection of annals in Old English chronicling the history of the Anglo-Saxons. The original manuscript of the Chronicle was created late in the 9th century, probably in Wessex, during the reign of Alfred the Great...

, he was betrayed by King Harthacnut and killed. He was the last of the ancient Bernician line of earls to rule before his son Osulf usurped the Northumbria

Northumbria

Northumbria was a medieval kingdom of the Angles, in what is now Northern England and South-East Scotland, becoming subsequently an earldom in a united Anglo-Saxon kingdom of England. The name reflects the approximate southern limit to the kingdom's territory, the Humber Estuary.Northumbria was...

n earldom in 1067.

Sources

• Stenton, Sir Frank M.
  Frank Stenton
  Sir Frank Merry Stenton was a 20th century historian of Anglo-Saxon England, and president of the Royal Historical Society . He was the author of Anglo-Saxon England, a volume of the Oxford History of England, first published in 1943 and widely considered a classic history of the period...
  
   Anglo-Saxon England Third Edition. Oxford University Press, 1971.
• Fletcher, Richard
  Richard A. Fletcher
  Richard A. Fletcher was a historian who specialized in the medieval period. He was Professor of History at the University of York and one of the outstanding talents in English and Spanish medieval scholarship....
  
  . Bloodfeud: Murder and Revenge in Anglo-Saxon England. Allen Lane, 2002.