Abernathy

Welsh I would hazard a guess, as the prefix 'Aber' means 'mouth of'. Not sure what a Nathy is though.

"Also, while the Celtic peoples of those two nations endured conquest, and a degree of discrimination, by England, their subjugation was hardly as severe nor as long-standing as that suffered by Ireland."

Not as long standing? Where did you get that from? Wales has suffered incursions and invasions by the Irish, Romans, Scots (invited by Vortigern), Normans and finally the English. The idea that the Welsh 'got away' with less severe subjugation than the Irish is ridiculous - just because it happened a long time ago and Meibion Glyndŵr stopped burning down holiday cottages years ago doesn't mean that everything's hunky dory in the most oppressed kingdom in the Isles.