I am also looking for information on the Longenbaugh family, as my father claimed that we were related to the Sundance Kid. My Great Great Grandmother was Mattie Blanche Longenbaugh, her father was George Longenbaugh, but I don't have a middle initial so am not sure if this is the same George you mention. Am unsure of Mattie's mothers name, but believe it to be Julia Stalters. Any information would be most appreciated.