Note 43 — Chapter II · The Kingdom of Scotland—843–900.
Reading edition
The Fingall are sometimes supposed to have been Norwegians and the Dugall Danes, a fanciful distinction apparently, as Thorstein Olaveson was king of the Dugall (An. Ult. 874), and his father Olave was undoubtedly a Norwegian. The Hy Ivar, chiefs of the Dugall, were undoubtedly a Danish race, for the Northmen who slew Elli at York in 867 were Dugall, and known as Scaldings or Skioldungr of the royal race of Denmark. An. Ult. 866. Twysden, p. 70.