WI 15th Inf Co F. Residence: Manitowoc, Manitowoc County, Wisconsin. Civil War: Unmarried. Age 18. Enlisted for three years on 4 Jan 1862 at Manitowoc and mustered at Madison, Wisconsin, 11 Jan 1862. Private. Sick and left behind with the baggage train on 26 Dec 1862. Taken prisoner at Chickamauga, Georgia, 19 Sep 1863, and was heard from as a prisoner of war on 6 Nov 1863. Still absent as a POW at time the regiment mustered out. [Buslett wrote that there was a report Gunstenson had been killed at Chickamauga, not taken prisoner.] Sources: (WHS Series 1200 box 76-8; red book vol 20 p88) (Buslett p505) (Ulvestad p285) (Ager p307) (Meeker)