Osred was a child when his father died, and it is assumed that Eadwulf I usurped the throne.
Eadwulf's relationship, if any, to the ruling dynasty, descendants of Ida, is not known, but it is quite possible that he was indeed of royal descent as two or more other branches of the Eoppingas are found as kings of Northumbria after the extinction of the main line.
Initially Eadwulf I appears to have had the support of ealdorman Berhtfrith son of Berhtred, presumed to be the lord of the north-east frontier of Bernicia, in Lothian and along the Forth.
Eadwulf I aimed to keep the bishop in exile, but Berhtfirth appears to have supported Wilfrid's return.
Eadwulf I appears to have been exiled to either Dál Riata or Pictland as his death is reported by the Annals of Ulster in 717.