Background
He was probably a son of Halfdan, a leading Dane who became a vassal of Charlemagne in 807.
He was probably a son of Halfdan, a leading Dane who became a vassal of Charlemagne in 807.
He was probably related to the Danish royal family, as "Hemming" was one of their favoured names. This Hemming was probably the same person as Hemming Halfdansson. lieutenant is probable that Hemming was received by the Franks and granted Walcheren, a fortress in Frisia, as a benefice.
lieutenant may have been held earlier by his father, it was certainly granted in 841 to the Danes Harald and Rorik.
Probably both Eccihard and Hemming were responsible for the defence of Frisia from the Vikings, as a capitulary of 821 refers to "the counts who are responsible for coastal defence". If so, Hemming appears to have been the superior, since Thegan of Trier in his Gesta Hludowici imperatoris, an account of the reign of Louis the Pious, names him first when recording the dead, followed by "another leader, Eccihard, and many of the emperor"s nobles".
On the other hand, Hemming may have been a courtier sent by the emperor to aid the local leader, Eccihard.
He, along with its Frankish count, Eccihard, died defending it from a Viking attack in 837.