In S.M. Stirling's new book, Dies the Fire, one of the main characters (Juniper) is a redheaded Celtic/folk musician from the northwest, with a deaf daughter. If this doesn't already sound familiar, it might help to know that many of the lyrics Juniper sings throughout the book are lyrics from songs by Heather Alexander or her band Uffington Horse. (There is an acknowledgment to Heather in the foreword, as well.)
It's also an excellent book on its own merits, aside from having someone very clearly inspired by my favorite folk musician as a main character... but I'm a Stirling fan anyway.