Born in New York. A resident of Burlington, Kane County, Illinois when he enlisted in the 8th Illinois Cavalry for one year at Marengo, Illinois. Mustered in as a Private in Company B at Marengo, Illinois on 18 Oct 1864. Mustered out at Benton Barracks, Missouri on 17 Jul 1865 and discharged at Chicago, Illinois. A member of Gen. Lyon Post No. 26 of Toledo, Lincoln County, Oregon. Served the Post as Senior Vice Commander in 1888. AKA "Simeon P. Bolivar". Pension records and most military records list his name as "Simeon B. Hatch".