Mary Spahr (maiden name: Heilman) was born around 1791 in Pennsylvania. She married David Spahr on June 2, 1811, and they had at least three children, including John, who was born around 1816. They lived in North Middleton, Pennsylvania, and her husband worked as a blacksmith. By 1850, they owned $2,000 of real estate. A decade later, they were living in Middlesex, Pennsylvania, and they owned $3,000 of real estate and $400 of personal property. Her husband died on March 7, 1868, and she passed away on May 16, 1878.