Looking for the Devilbiss Family of Guthrie County

I hope someone can help me. I'm research this family for my daughter's boyfriend, he didn't meet his dad until he was 18 years old. This what I know so far. The family came from Maryland to Illinois to Iowa, sometime before 1880 (that is where I first found them in Iowa). Luther Devilbiss married Ara Burrall and had the following children. John Henry, Samuel Clint/Clinton, Joseph T. Jeninna Elizabeth, Charles Adam, Ella Mary. John Henry married first Mollie Rogers and second Sarah Godown (this the line that my daughter's boyfriend is from).