Yeah, I was a bit concerned about my phrasing.
Jolyon,
Peregrine, and
Inigo, I think, would have definite connotations of pretentiousness or trying too hard in the U.K, I think, if that makes sense, but they would be a least somewhat peripherally recognizable, whereas in the U.S. they're just completely unknown? I know that none of those are in widespread use by any means. I think it's a bit difficult for me to explain what I mean. I do agree that they would rise eyebrows. My phrasing was poor.
Demi definitely got way more use in the U.K. than in the U.S. The highest she's ever charted in the U.S. was the low 600's, but in the U.K. she was in the top 100 at one point.