Einhard's Annales record that news of the death of "Hemmingus Danorum rex" arrived in 812, that "Sigifridus nepos Godofredi regis et Anulo nepos Herioldi quondam regis" both claimed the succession, and that the faction supporting "Anulonis" was victorious, with "fratres eius Herioldum et Reginfredum" being installed as kings.The Annales Fuldenses record the death in 812 of "Hemmingo Danorum rege", the succession dispute between "Sigifredo nepos Godofredi regis et Anulo nepos Herioldi", the battle in which both were killed but which Anulo's supporters won, and the accession by "Herioldum et Reginfredum fratres eius regis". The early 9th century Danish kings led the Viking expeditions which raided north-west Germany.
Described 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).However, Einhard's Annales record that "Anulo nepos Herioldi quondam regis" was one of the claimants to the throne in 812 which, assuming that "nepos" should here be translated as grandson, indicates that this may be correct.The Annales Fuldenses record that "Sigifridi regis Danorum" sent "Halbdanicum sociis suis" as missi to a council held by Charles I King of the Franks at "Lippia".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. The Annales Fuldenses record that "Sigifridi regis Danorum" sent "Halbdanicum sociis suis" as missi to a council held by Charles I King of the Franks at "Lippia" as the son of King Halfdan, but the primary source on which this is based has not yet been identified. King of Vestfold, Hedeland, Vaermland, Westmare and Hedemarken.
It has therefore largely been ignored in the reconstruction of the later generations of the family. Einhard's Annales record that "Harioldus et Reginfredus reges Danorum" who, in the previous year had been expelled from Denmark by "filiis Godofredi", attacked again in 814 but "Reginfridus et unus de filiis Godofredi qui maior natu erat" were killed.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.Adam of Bremen names "Reginfridum et Haraldum" as successors to Anulo without specifying their relationship to each other, recording that the sons of Godefrid devastasted the kingdom, forcing Harald to seek help from Emperor Louis I.They made peace with Charles I King of the Franks, but were driven from Denmark by the sons of King Godefrid.Danish resistance was led by Svend Estridsen, the son of King Knuds sister, who reasserted control of Denmark by 1047.