7 September 1835–2 February 1903 (Age 67)
Elmira, Chemung, New York, United States
Mary Harmon was born on 7 September 1835, in Elmira, Chemung, New York, United States as the daughter of Jacob Harmon and ?. She married Robert Duffy on 18 October 1872, in Wright, Iowa, United States. They were the parents of at least 1 daughter. She lived in Spring Creek Township, Black Hawk, Iowa, United States in 1900. She died on 2 February 1903, in Iowa, United States, at the age of 67, and was buried in Rowan, Wright, Iowa, United States.
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