Sigfred was an eighth century Danish king who is known to have reigned from before 777 to after 798. Fragments of his reign can be traced via Frankish sources.

Widukind, also known as Wittekind and Wittikund, was a leader of the Saxons and the chief opponent of the Frankish king Charlemagne during the Saxon Wars from 777 to 785. Charlemagne ultimately prevailed, organized Saxony as a Frankish province, massacred thousands of Saxon nobles, and ordered conversions of the pagan Saxons to Christianity. In later times, Widukind became a symbol of Saxon independence and a figure of legend. He is also venerated as a blessed in the Catholic Church.