Nyora kupfuurira kweiyi ndima - Muna November 1842, McClernand akaroora Sarah Dunlap weJacksonville, Illinois, shamwari yepedyo yaMary Todd Lincoln. Sarah akanga ari mwanasikana waJames Dunlap, uyo akashanda somukuru mukuru muUnited Army munguva yeHondo yeVanhu, pakupedzisira akagadzwa kuva mukuru mukuru mukuru. Mwanakomana waJohn naSarah, Edward John McClernand, akanga akakurumbira somukuru mukuru wemauto eU.S. muHondo dzeIndia uye gare gare muPhilippines
. Pashure porufu rwaSarah, McClernand akaroora hanzvadzi yake, Minerva Dunlap.