Mary Hergenroeder, according to her death record, was born on September 14, 1904 in Etna, Allegheny County, Pennsylvania. Her parents, both born in Etna, were Louis Hergenroeder and Cecilia Burke.

Mary died at her home of a pulmonary embolism on November 19, 1944. She was 40 years old. She is buried at St. Mary's Cemetery, Sharpsburg.