DALRIADA, the name of two ancient Gaelic kingdoms, one in Ireland and the other in Scotland. The name means the home of the descendants of Riada. Irish Dalriada was the district which now forms the northern part of county Antrim, and from which about A.D. 500 some emigrants crossed over to Scotland, and founded in Argyllshire the Scottish kingdom of Dalriada. For a time Scottish Dalriada appears to have been dependent upon Irish Dalriada, but about 575 King Aidan secured its independence. One of Aidan's successors, Kenneth, became king of the Picts about 843, and gradually the name Dalriada both in Ireland and Scotland fell into disuse.
See W. F. Skene, Celtic Scotland (Edinburgh, 1876-1880).
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)