Norse-Gaels
The Norse–Gaels were a people who dominated much of the Irish Sea region, including the Isle of Man, and western Scotland for a part of the Middle Ages; they were of Gaelic and Scandinavian origin and as a whole exhibited a great deal of Gaelic and Norse cultural syncretism. Other modern terms used include Scoto-Norse, Hiberno-Norse, Irish–Norse and Foreign Gaels.
Read more about Norse-gaels.