Mary HeffronHeffron family?Unconfirmed inferred (no source)FamilySpouseJohn P Heffron (1856 to 1923)ChildrenFrancis Leo Heffron (1903 to 1961), John P. Heffron (1901 to 1970), Mary Margaret Heffron (born Judge) (1905 to 1995), Michael Joseph Heffron (1895 to 1969), William A. Hefferon (born 1897), Cecilia Heffron (born 1900), Gussie Heffron (born 1906)View Mary Heffron's family tree · See this person in the family network · Find how you are related