John Duncan was born in Polk county, Iowa, November 5, 1853, his parents being William and Abigail (Williams) Duncan. When he was fourteen years old his parents removed to Cass county, locating in Atlantic. He removed to his present location on section 1, Atlantic township, in 1878, and was married March 29, 1881, to Rosena Strater, daughter of William and Catharine (Humerick) Strater, a native of this county. He has one hundred and six acres of land, part in Franklin and part in Atlantic township, about eighty acres of which is under cultivation, and is engaged in stock farming.
Contributed by Lisa Varnes-Rex from "History of Cass County, Iowa. Together With Sketches of its Towns, Villages and Townships, Educational, Civil, Military and Political History: Portraits of Prominent Persons, and Biographies of Old Settlers and Representative Citizens." Springfield, Ill.: Continental Historical Company, 1884, pg. 840.