Slightly didactic & more than slightly scatalogical note...
The "raiders" were the Vikings.
The word "Viking" means "to beat" it has the same etymological route as "Fucking" (The Sparrow Hawk,smallest of Britains indigenous Hawks was more commonly known as the Windfucker until Victorian times)
Virtually all Vikings were Danes or Norsemen but most Danes & Norsemen were never Vikings.
(The Normans also belong to this group BTW the word Norman is merely a corruption of Norseman.)
               PF
            Foulmouthed Pedant.