The Basques discovered America first, however they were such a distrustful nation they declined to tell anyone so they could keep its riches for themselves..
Wales was Wales before England was was, It was the early christian monks who endeavouring to try to record it had to find an alphabet and of course as Latin speakers they assigned latin text to transcribe it. it is quite possible in doing so they have distorted pronunciation of the language to a more latin vowel set. It was not that long ago that the texts commenced about the time of William the Bastard. Gerald Cambriensis's tour of Wales was part of the process by which the narrative of Welsh History, Culture and legends was created. The Mabinogion was passed down through generations of skilled story tellers never on paper, The importance of the spoken language has made eisteddfod and the art of verse and singing in person so important in Welsh Culture as opposed to having loads of book festivals.
as Iolo says the beauty of the language is it mutates so that when letters with hard sounding words come together the mutation softens the process for the spoken language but can look a tong twisting adventure when written for an english speaker. eg in Wales Yn Cymru becomes Yng Nghymru a nasal mutation that sounds a whole lot nicer than pronouncing the dictionary spelling