 Archaeologist Ewan Campbell says there is no archaeological evidence for a migration or invasion, and suggests strong sea links helped maintain a pre-existing Gaelic culture on both sides of the North Channel.Dál Riata grew in size and influence, and Gaelic language and culture was eventually adopted by the neighbouring Picts (a group of peoples who may have spoken a Brittonic language) who lived throughout Scotland.Manx, the language of the Isle of Man, is closely akin to the Gaelic spoken in the Hebrides and the Irish spoken in northeast and eastern Ireland and the now-extinct Galwegian Gaelic of Galloway (in southwest Scotland), with some influence from Old Norse through the Viking invasions and from the previous British inhabitants.