Molly, the Big Island phone book has two pages that go from McAdams to McWilliams, and a bunch of "Mac"'s as well. But I actually didn't know about the Scottish connection until you mentioned it. A friend of mine, John Mebane, wrote a book called "The April of Her Age", which is a historical novel about the relationship between Robert Louis Stevenson and Princess Ka'iulani. If you're interested and can't find it, let me know and I can send you details. And let me know if you write a song...I'll sing it here if I can ever find enough people to get a song circle together. Where on the island did you live?

Aloha,
Mark (in Hilo)