Mary Helen Elizabeth Duffy^[1]

1916 - 2002  (86 years)

• Name	Mary Helen Elizabeth Duffy  [2]
  Birth	16 Jan 1916	Leavenworth, Chelan County, Washington, United States   [2]
  Gender	Female
  Religion	Catholic  [2]
  US SSN	563-14-9222  [3]
  Occupation	Physical Therapist, Teacher, Homemaker  [2]
  Death	26 Mar 2002	Castro Valley, Alameda County, California, United States   [3]
  Person ID	I2943	Lindell-Herndon Genealogy
  Last Modified	27 Jun 2004

  
  

  Father	Charles Augustus Duffy,   b. 18 Mar 1883, Hastings, Dakota County, Minnesota, United States d. 4 Apr 1952, Los Angeles, Los Angeles County, California, United States (Age 69 years)
  Mother	Mary Blanche Flynn,   b. 19 Jan 1879, Litchfield, Meeker County, Minnesota, United States d. 8 Nov 1973, Castro Valley, Alameda County, California, United States (Age 94 years)
  Marriage	1911	Wenatchee, Chelan County, Washington, United States   [2]
  Family ID	F2108	Group Sheet  |  Family Chart

  
  

  Family	(Living)
  Children	1. (Living)   2. (Living)   3. (Living)   4. (Living)   5. (Living)
  Family ID	F2118	Group Sheet  |  Family Chart
  Last Modified	10 Feb 2019

  
  

• Notes

  Went by “Helen”. [2] Death date and location are based on a single matching SSDI record for a “Helen E Gallagher,” born 16 Jan 1916. [3]

  
  

• Reference

  Herndon, William Robert. "Mary Helen Elizabeth Duffy", Lindell-Herndon Genealogy. [Online]. Available: https://lindell-herndon.org/getperson.php?personID=I2943&sitever=mobile&tree=LindellHerndon. [Accessed: 12-Jun-2026].