Mary Neuthard was born in Baden, Germany, of a rather aristocratic family, on March 24, 1870. She was a sister of Sisters M. Edeltrudis and Eustella. She entered the convent on September 29, 1893, was invested in November 1893, and professed on November 21, 1894. She made perpetual vows on November 4, 1902.

Refined, and gifted in art needle work, she had charge of the stitching room making Church vestments for many years. She was postulant mistress for a time and had a beautiful voice.  As chanter she devoted herself to the singing to the point of exhaustion during Holy Week and other long services.

Sister was stationed at Mundelein with the original thirty-three pioneers and helped to establish the stitching room there, which for some years was a means of income for the community. The major task of this department was the making of the surplices for several hundred seminarians at St. Mary of the Lake Seminary each year. In declining health Sister spent some years in the Clyde infirmary and died on June 24, 1933 at the age of sixty-three.