Peter E. Peiffer was born in 1843 in Crawford County, Pennsylvania, the son of Pennsylvania natives Simon Peiffer (b. 1810) and Catherine Master (b. 1818)
In 1850 Peter was living with his family in Venango, Crawford County, Pennsylvania. By 1860 Peter was attending school and living with his family in Crockery, Ottawa County, Michigan.
Peter stood 5’7” with hazel eyes, brown hair and a light complexion and was an 18-year-old farmer living in Crockery, Ottawa County when he enlisted in Company I on May 13, 1861. He reenlisted as a Corporal on December 24, 1863, at Brandy Station, Virginia, crediting Sparta, Kent County, was presumably absent on veteran’s furlough, possibly at his family home in Allegan County, in January of 1864 and he rejoined the Regiment on or about the first of February.
Peter was living in Nunica, Ottawa County, when he married Springwater, New York native Maria M. Pond (b. 1845) on January 30, 1864, in Muskegon, Muskegon County.
Peter was transferred as a Corporal to Company I, 5th Michigan Infantry upon consolidation of the 3rd and 5th Michigan Regiments on June 10, 1864, and was a Sergeant when he was wounded in the arm and forearm while on picket duty on September 16 near Petersburg, Virginia.
He died from his wounds and typhoid fever, in a field hospital on September 22, and was buried either at the Fair Grounds hospital, near Petersburg, Virginia, or one mile east of Avery’s house near a grove, outside of Petersburg. He was reinterred in Poplar Grove National Cemetery: original division D, section C, grave no. 21 or 1205 (headstone).
In April of 1865 his widow was living in Sardinia, Erie County, New York, when she applied for and received a pension (no. 70681).