Since I could qualify on parentage/grandparentage rules to play for three of the Home Nations competing it is hard to know what to make of it all.
But in my defence I would say I have never supported the Scots and only followed Wales when JPR and co were playing. Most ancestors traced to date are English back at least to 1540 when there is a suspicion of French as yet unproved.
My eldest, poor boy, qualified through me to pay for Scotland, Wales and England and through his mother Ireland as well. Fortunately he never had to make the choice having been injured out of the game at 15.