Not that I am aware of, but then the Laigin are more of a confederation of families than really one people. > Is there any belief that M-222 may have come to Ireland with the Laigin? > > Early Irish historical traditions credited the founding of the Laigin to the legendary High King Labraid Loingsech . His grandfather, Lóegaire Lorc , had been overthrown by his own brother, Cobthach Cóel Breg , and Labraid forced into exile. After a period of military service on the continent, Labraid returned to Ireland at the head of an army, known as Laigin after the broad blue-grey iron spearheads ( láigne ) they carried. The Lebor Gabála Érenn dates Labraid's accession to 300 BC. [ 3 ] [ 4 ] [ 5 ] Modern historians suggest, on the basis of these traditions and related placenames, that the Laigin were a group of invaders from Gaul or Britain, who arrived no later than the 6th century BC, and were later incorporated into the medieval genealogical scheme which made all the ruling groups of early Ireland descend from Míl Espáine . Placenames also suggest they once had a presence in north Munster and in Connacht. [ 6 ] > > See O'Rahilly's historical model for a summary of the Laigin at the height of their power in Ireland. They may have conquered approximately half the island.