My great great great grandfather was Felix Landes who married Lethia (Leathe) Armstrong. They lived in Butler County, Iowa after 1850's, but were in Carroll County, Indiana before that. Leathia Armstrong was from Knoxville, Tennessee. I think he may be descended from Frederick Landes and Mary Thomas. Do you know who would have that history or do you? There is some conflicting information. I have sought this for years.