Born: December 17, 1835.
Died: June 19, 1919.
Buried: Rosehill Cemetery and Mausoleum, Chicago, Illinois.
Mary was the daughter of Charles Ingraham Cooley and Lucy Beckwith Ely, and wife of Giles Buckingham Willcox (married April 11, 1854).
She served as foreign secretary of the Women’s Missionary League for 30 years.
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