John, I'm working on a Welsh line of ancestors and in various sources running into a wide variety of "alternate" spellings, which I don't have the background to sort out. Your comment on how the double "l" would be pronounced, and therefore why it's less likely than the single "l" in this case is most helpful. Do you know of good sources on line that give English equivalents of Welsh names, like William for Gwilym, as well as a pronunciation guide?
