Most of my bloodline is Welsh, my father 100% (as far as I know - may be an English mailman in there somewhere), my mother I think 50% (definite English something or other there). Hence wales, no capital, easier to type.
I've always liked the name david and had I had a son would have wanted to name him that (david is a Welsh name , too). Hence david (though morgan was a close second).
When I became a little bit interested in family history, I asked my mother to find out what she could about my deceased father's heritage. She called me somewhat later and hesitantly, not knowing how I would react, informed me that my father's grandmother had refused to marry his grandfather, though they lived together for decades, in that North Carolina enclave of Welsh immigrants. When I stopped laughing, I remarked, "Well, at least someone in the family had some imagination!" My mother was not best pleased.
Are not families interesting -- and sometimes hilarious.
In America, it's remarkable easy to change one's name; you just start using whatever you want. Probably a consequence of our frontier history and especially in the West where I live (California) one is simply accepted for what one wants to present. Most handy. You just have to make sure the Internal Revenue Service (our federal tax johnnies) knows who you are.