Mary C. Ganninger was born September 9, 1936 in St. Louis, MO. She was the daughter of Charles Francis and Matilda Mary (nee Emily) Ganninger. She died on December 25, 2025 at Crystal Oaks Nursing Facility in Festus, MO at the age of 89 years. She is survived by three sisters, Elizabeth Hudson, St. Louis, MO; Helen Fears, O’Fallon, MO and Nancy Ott, Farmington, MO; two brothers, Patrick Ganninger, Festus, MO and Paul Ganninger, St. Louis, MO; and several nieces and nephews. She is preceded in death by her parents and one sister, Agnes Warden. Mary was a retired accountant. She was a member of St. Rose of Lima Church, De Soto, MO; Daughters of Isabella Circle #659 and she helped with the De Soto Railroad Employees Memorial.