What I meant to say (and forgot) is that one of my Gaelic teachers did fieldwork for years in the Gaelic-speaking parts of Scotland (west and east). She said she had never seen more hard drinking going on than in the Western Islands and mainland parts adjacent. One morning she was walking along the jetty at Lochalsh and saw two fellows sitting on the wall, drunk as lords. She went on up the street, and when she came back by about an hour later there was a knot of people on the jetty - these two fellows were so far gone they had fallen in and both drowned.
Like I tell my kids, you gotta watch those Celtic genes.
I would also guess that the Western Islands have a very pure Highland Scot (Irish) genepool.
I have read that on a clear day, Ireland is visible from the highest point on Colonsay or maybe it is Oronsay which is connected except at high tide.
You have the exact same combination as my wife, three quarters Gaelic and one fourth German. A good combination. The Celtic good looks with a little of the German sturdiness.