The Bretons and Scots, and Irish together
The Manx and the Welsh, and Cornish forever
Six nations are we, proud Celtic and free!
Even in England, about 64 per cent of people are descended from these Celts, outnumbering the descendants of Anglo- Saxons by about three to one.
Read more: http://www.scotsman.com/lifestyle/we-re-nearly-all-celts-under-the-skin-1-1141420#ixzz43A82dCan
Scotland and wales were actually the last ones I thought of (think my order was breton, manx, cornwall, ireland scotland.. long pause, wales.)
Portugal has a strong and surviving Celtic culture, too.