Trying to Find the Generation Before My Great Grandfather Beverly Carradine

Some say there were two Italian brothers who came over via Spain and Ireland. Beverly Carradine was a Holiness minister in Missouri, Louisiana, and in other states during the mid 1800's. He married Laura Reed and later my Greatgrandmother, Modesta Burke DeBolle. I know something about Modesta's father, Glendy Burke, but nothing about her and the De Bolle family.