When you read early (pre 1960's) books they say a lot about "dark
celts" - small, swarthy, black haired and dark eyed people, not only
in Ireland but also in Wales and Scotland. The explanation i've seen
given several times is that they are probably the genetic remnants of
pre pre-Celtic britons, same race of pre-indoeuropeans as the
Don't know if this is what is referred to as "black irish" but I
guess that's what the question's about!