Craig, I have checked my records and Michael Delo and Susan Stiffler were my great-grandparents. They had 6 children, the oldest, Henry was my grandfather.I have several pages of information compiled in the 1930's by Frank Delo, a cousin to Henry. It begins with the arrival of Pierre Delon in PA in 1736 from France.It also has some information of the name in France prior to that.The name has had various spellings over the years which makes it a little difficult to trace.The "n" in Delon was silent in France and subsequently dropped in America. I don't know when my branch of the family added the e and capitalized the L. I would be glad to copy and send the information I have to you.It includes all of the children and grandchildren of Michael and Sarah.I am just beginning to compile my family tree and intend to update the Delo information I have in the near future. There are now at least three additional generations.I have no information on the Stiffler family history.Anything you have would be appreciated.