I'm not related but thought this might help someone.
Source:The History of Appanoose County, Iowa, Containing A History of the County, its Cities, Towns, etc., A Biographical Directory of Citizens, War Records of its Volunteers in the late Rebellion, General and Local Statistics, Portraits of Early Settlers and Prominent Men, History of the Northwest, History of Iowa, Map of Appanoose County, Constitution of the United States, Miscellaneous Matters, etc.; illustrated; Chicago:Western Historical Company, 1878.
W. H. ARGO, farmer, Sec. 4; P.O. Iconium; born in Pickaway Co., Ohio, in 1826. He is a descendant of John Argo, who came from France in an early day and fought in the Revolutionary war; lived to be 105 years old. Mr. Argo came to this county in 1855; owns 405 acres of land, valued at $8,000. He has held the office of Justice of the Peace and school offices. Married Sarah Hoover in Ohio in 1852; she was born in Ohio in 1832; had nine children, eight are living - A.J., G.F., Susan J., James H., Mary, Minnie, W. L. (deceased), Sarah Emma, and baby not named. Members of the M.E. Church; Greenbacker.