My friend had been in the Navy and I think he was stationed in Iceland for a while. He fell in love with the girls who he described as the most beautiful in the world.
A very large percentage are blondes. Now that I think about it, he had blonde hair himself. I think the reason he ended up with a Chinese Beauty instead was that even he at age 65 was no longer able to just get about any girl he wanted. The fact that he drove a Rolls Royce probably didn’t hurt.
The yDNA (male), R1b Viking men stopped off in Ireland and took the best looking women to Iceland with them as either wives or slaves. (They're still there to this day)
Those R1b guys are my people.
Something else you didn't know about Ireland....All the Polar bears in the whole word can trace their mtDNA (female) to a Brown Bear female in Ireland 18,000 years ago.