A Deville DNA project would be great. I got my father's DNA tested through a One-Name-Survey (Lawrence webring -- he wasn't a Deville but some of his ancestors are). The address for One-Name-Survey is http://www.one-name.org/http://www.one-name.org/and that main page tells you about the Guild. I ran a search for the name Deville and there is a result. You could contact that person and see what you can find out. Please let me know if you get ANYBODY at all to take the test, so I can test against it too. It's time to scale our genealogical brick walls (smile) with DNA testing.