Adam of Bremen names "Sigafrid et Anuleo, nepotes Godafridi" when recording that they fought to succeed after the death of King Hemming as the son of King Harald, but the primary source on which this is based has not yet been identified.
However, Einhard's Annales record that "Anulo nepos Herioldi quondam regis" was one of the claimants to the throne in 812Described as brother of Kings Harald and Reginfred, Hemming must have been captured by Emperor Charlemagne as Einhard's Annales record that "Harioldus et Reginfredus reges Danorum" sent envoys to Emperor Charlemagne in 812 asking for the release of "fratrum suum Hemmingum"The Annales Fuldenses record that "Nordmanni" exacted tribute in "Walchram insulam", where "Eggihardum eiusdem loci comitem et Hemmingum Halbdani filium" were killed "837 XV Kal Iul" and "Dorestadum" was devastated [Ali] (-killed in battle Haithabu 812).
The Chronicon Roskildense records that "Haraldus rex Danorumfrater eius Hericus et uxor regis" was baptised in 826 at Mainz by "Othgario archiepiscopo"The Annales Bertiniani record that "Godefridus, Herioldi Dani filius", who had been baptised at Mainz during the reign of Emperor Louis, defected from Emperor Lothar in 852, raided Frisia, and sailed up the Scheldt and the Seine.
The Annales Fuldenses record that "Nordmanni Godafredo duce" sailed up the Seine in 850 and that Charles II "le Chauve" King of the West Franks granted him territory, without specifying where this was The Annales Bertiniani record that "Roric et Godofridus" returned to Denmark after Emperor Lothaire gave Frisia to his son Lothaire in 855, but recovered most of Frisia at the end of the same year, establishing themselves at Dorestad The Annales Fuldenses names "Nortmannorumcum ipsis regibus Sigifredo et Godofrido, principis Vurm, Hals" when recording a Viking attack in 882, in another manuscript recording the baptism of "Gotafridum" and that he was given "comitatus et benefice qua Rorich Nordmannusin Kinnin [Kennemerland]" held from the Frankish kings, illegitimate daughter of LOTHAIRE II King of Lotharingia [Carolingian] & his mistress Waldrada --- ([860/65]-[21 May/26 Oct] 907).
The information in the later generations of the Europische Stammtafeln chart is not completely supported by the information obtained from the primary sources so far consulted.
Their followers eventually settled in Friesland, where Godefrid was appointed duke in 882.
During the first half of the 9th century, Denmark appears to have been a unified kingdom under a single ruler, but this unity quickly fell apart.
A better fit for the wife of Theoderich may be Regenlind, [sister of Bovo Bishop of Chalons, daughter of ---].
The known sister of Bishop Bovo was Frederuna, wife of Charles III "le Simple" King of the Franks.
We have even less information regarding the early 10th century kings.