Theodric orÐeodric possibly ruled from 572 to 579. He was the fifth known ruler of theAnglo-Saxon kingdom ofBernicia.

Theodric was the son ofIda of Bernicia, founder of the kingdom of Bernicia, and a brother of his predecessor,Æthelric. Little is known of Theodric's life and reign althoughUrien, the king ofRheged, was said to have subjected Theodric and his sons to a three-day siege on the island ofLindisfarne. Theodric has been identified with an Anglian ruler nicknamedFflamddwyn in Welsh, who, according to medieval Welsh poetry such asGweith Argoed Llwyfain (TheBattle of Argoed Llwyfain orBattle of Leeming Lane) from theBook of Taliesin, was killed in battle by Urien's son,Owain mab Urien, after he demanded hostages and Owain refused to give in.^[1]

The dates for Theodric's rule are conjecture; the earliest authorities differ widely on the order and the regnal years of the kings between the death of Ida and the beginning ofÆthelfrith's rule in 592/593.

• Theodric 1 atProsopography of Anglo-Saxon England

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