The Danes were a North Germanic tribe residing in what more or less comprises modern day Denmark. They are mentioned in the 6th century in Jordanes' Getica, by Procopius, and by Gregory of Tours. The Danes spoke the Old Norse language which was called dǫnsk tunga and was shared by the Danes, the Icelandic, Norwegian and Swedish peoples.
During the Viking Age, the Danes were based on the Jutland Peninsula, the island of Zealand, and the southern part of present-day Sweden including Scania. In the early 11th century, King Canute the Great (died 1035) ruled Denmark, England and Norway as a single realm for almost 20 years.
Beginning about AD 800, the Danes began raiding the islands of Great Britain and Ireland, and were gradually followed by a succession of Danish settlers. The Danes began settling England in 865, when brothers Halfdan Ragnarsson and Ivar the Boneless wintered in East Anglia. Halfdan and Ivar moved north and captured Northumbria in 867 as well as York. The Danes invaded Ireland in 853 and were followed by Danish settlers who gradually assimilated with the local population and adopted Christianity.
- Anderson, Carl Edlund. "The Danish Tongue and Scandinavian Identity" (PDF). p. 1. Retrieved 4 November 2013. "Icelandic writers (who provide the bulk of our surviving documentation)commonly employed the term dǫnsk tunga (literally “Danish tongue”) to identify the language not just of those who were ruled by the Dana konungr, but of all Germanic-speaking Scandinavians."
- Jordanes. Mierow (1908), ed. Getica III (23).
- Flores Historiarum: Rogeri de Wendover, Chronica sive flores historiarum, p. 298-9. ed. H. Coxe, Rolls Series, 84 (4 vols, 1841-42)