Found in the 1878 History of Linn County, Iowa Lisbon Twp J. M. Armstrong physician and surgeon. Born in Ohio 1812 married Caroline Coe born in NJ 1866 He had six kids by a previous marriage Harriet, Frances, Thomas, Sarah, Levi and Anna And she had 5 by a previous marriage Augusta Adeline, Mary, Frank and Clarence Coe T. J. Armstrong in Mt. Vernon - working in the quarry W. B. Armstrong, dry goods born in Ohio 1825 married Phoebe Hough (born in PA 1850 Three children Frank H., William and Mary H I bought the CD of this history, but it is not indexed, and the search/find option is not available. I had to physically scan the pages. There may be other Armstrongs in Iowa, but this CD only involves Linn County. Mary