A member of a Gaelic people inhabiting the ancient kingdom of Dalriada.
The Kingdom of Dalriada was originally located in the far north-east of Ireland and expanded into parts of what is now western Scotland (especially Argyll) from at least the 5th century a.d. During the 9th century, alliances between Dalriada and the Pictish kingdoms led to the formation of the kingdom of Alba, the forerunner of the medieval kingdom of Scotland.
Of or relating to the Dalriadans or their kingdom.
Late 17th century; earliest use found in Edward Stillingfleet (1635–1699), bishop of Worcester and theologian. From Dalriada (Early Irish Dál Riata/ˌdaːlˈriadə/; Irish Dál Riada, Scottish Gaelic Dàl Riada), the name of an early medieval kingdom encompassing part of the northern coast of Ireland and (later) large parts of the western coast of present-day Scotland + -an.