Hi, I saw your post and wanted to offer some info on these awsome line of Setters. The proper spelling is Llewellin by the way. Go to
www.bird-dog-news.com and scroll down the page til' you see the links for kennels and then "click on" Llewellin breeders. Also visit this page for history and other breeders and lineage info.
http://tamug.tamu.edu/~sparkst/llewel.htm
Good luck to your Dad and make sure to do the homework first!