The NorseâGaels (Old Irish: Gall-GoĂdil; Irish: Gall-Ghaeil; Scottish Gaelic: Gall-GĂ idheal; Manx: Goal-Gael, 'foreigner-Gaels') were a people of mixed Gaelic and Norse ancestry and culture. They emerged in the Viking Age, when Vikings who settled in Ireland and in Scotland became Gaelicised and intermarried with Gaels. The NorseâGaels dominated much of the Irish Sea and Scottish Sea regions from the 9th to 12th centuries. They founded the Kingdom of the Isles (which included the Hebrides and the Isle of Man), the Kingdom of Dublin, the Lordship of Galloway (which is named after them), and briefly ruled the Kingdom of York (939â944 AD). The most powerful NorseâGaelic dynasty were the UĂ Ămair or Ivar dynasty.
Over time, the NorseâGaels became ever more Gaelicised and disappeared as a distinct group. However, they left a lasting influence, especially in the Isle of Man and Outer Hebrides, where most placenames are of NorseâGaelic origin. Several Scottish clans have NorseâGaelic roots, such as Clan MacDonald, Clan MacDougall and Clan MacLeod. The elite mercenary warriors known as the gallowglass (gallĂłglaigh) emerged from these NorseâGaelic clans and became an important part of Irish warfare. The Viking longship also influenced the Gaelic birlinn and longa fada, which were used extensively until the 17th century. NorseâGaelic surnames survive today and include MacIvor, MacAskill, and [Mac]Cotter.