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Gertrude Therese Mangan

May 20, 1928 ~ May 27, 2022 (age 94)


Gertrude Therese Mangan, 94, of Aberdeen, SD, passed away Friday, May 27, 2022, at Avera St. Luke’s Hospital.

Mass of Christian Burial will be 10:30 a.m., Friday, June 3, 2022, at Sacred Heart Catholic Church, Aberdeen, officiating will be her son, Monsignor Charles Mangan, Bishop Donald DeGrood, and several priests of the Sioux Falls Diocese.

Visitation will be 5-7 p.m., Thursday, at the mortuary with a 7 p.m. liturgical wake and rosary.  Visitation continues one hour before Mass at the church.

Burial will be at Sacred Heart Cemetery following the Mass. A time of fellowship and luncheon will follow the burial at the church parish hall.

Schriver’s Memorial Mortuary and Crematory, 414 5th Avenue NW, Aberdeen, is in charge of arrangements.  Family and friends may sign the online guestbook and also view the service at

Gertrude Therese Martin was born May 20, 1928, to Charles and Margaret Elizabeth (O’Connor) Martin approximately 1-1/2 miles north of Crocker, SD. She graduated from Notre Dame High School in Mitchell, SD, in 1946, and then attended Presentation College in Aberdeen, where she received a teacher’s certificate. Gertrude also earned a Bachelor’s Degree in Education in 1953 and a Master’s Degree in Education in 1956 from Northern State Teachers College in Aberdeen. She studied adult education and also studied at The Catholic University of America in Washington, DC. Gertrude earned an Associate's Degree in Nursing from Presentation College in 1975. She then went on to engage in computer training in 1983.

Gertrude married Joseph A. Mangan in St. Michael's Catholic Church in Clark, South Dakota on August 8, 1959.

Gertrude taught elementary school in Clark, SD from 1946-1955 and in Madison, MN from 1959-1962.  She worked for the Bureau of Indian Affairs at the Cheyenne River Agency in Eagle Butte, SD in 1955.  Gertrude went on to teach secondary high school from 1955-1956 at Presentation Heights in Aberdeen.  She taught at Presentation Junior College in Aberdeen from 1956-1959.  She taught education, physical education, and psychology at Presentation Junior College from 1964-1975.  She worked in geriatric nursing as a registered nurse from 1975-1978 at Mother Joseph Manor in Aberdeen.  She was the Adult Day Care Project Coordinator at Mother Joseph Manor from 1978-1979.  She served as the Director of Nursing Services from 1979-1982 and the Administrator of Mother Joseph Manor from 1983-1993.  She also served as a preceptor for administrators in training for long-term health care for the State of South Dakota from 1988-1993.  Following her retirement from Mother Joseph Manor, Gertrude returned to Presentation College where she taught in the business department and allied health department from 1993-1999. 

She was a member of Sacred Heart Catholic Church, Catholic Daughters of the Americas, Kappa Delta Pi, Phi Theta Kappa, National Council of Aging, National Association for Female Executives, and Outstanding Area of Professional Women.  She served on multiple committees, councils, and advisory boards including Sacred Heart School Education Committee, Sacred Heart Catholic Church Parish Council, South Dakota Health Care Advisory Committee, St. Luke’s Home Health Care Advisory Committee, Medicare Discussion Task Force, City of Aberdeen Planning Commission, Aberdeen Area Senior Center Board, and the South Dakota Board of Optometry.  She received multiple recognitions including Presentation College Distinguished Alumni, Who’s Who in the Upper Midwest, and Who’s Who in American Education.  She earned the status of Fellow of the American College of Health Care Administrators.  She served as the Secretary and President of the South Dakota Association of Health Care Administrators, a “Red Jacket” Ambassador for the Aberdeen Chamber of Commerce, and Vocations Chairperson of Serra International.  She also served as an Extraordinary Minister of Holy Communion at Sacred Heart Catholic Church and St. Luke’s Hospital.

Her love for her family, their interests, and welfare were uppermost in her mind. She was a devout practicing Catholic. Gertrude will be remembered for her unwavering faith, the love she had for her family, and her love of reading.

Gertrude is survived by three sons and two daughters: Anthony J. (Shiela) Mangan, Pierre, SD, Msgr. Charles M. Mangan, Emmitsburg, MD, Mary Joan (Jeff) Dundas, Bakersfield, CA, William T. (Teresa) Mangan, Omaha, NE, and Margaret T. (Paul) McCarthy, Phoenix, AZ; her grandchildren: Heather, Chris, Jason Mangan; Aidan, Daniel, Katharine Dundas; Elizabeth, Liam, Molly, Clare, Joseph, Ava Mangan; Andrew, Sara, Nicole Mangan, and John Paul McCarthy. Gertrude is also survived by seven great-grandchildren and daughter-in-law Dona Mangan of Aberdeen. 

Gertrude was preceded in death by her parents; her husband Joe; her son Francis J. Mangan; three brothers; two sisters; five preborn grandchildren; and one preborn great-grandchild.

To send flowers to the family, please visit our floral store.


June 2, 2022

5:00 PM to 7:00 PM
Schriver's Memorial Mortuary & Crematory
414 5th Ave NW
Aberdeen, SD 57401

June 2, 2022

7:00 PM
Schriver's Memorial Mortuary & Crematory
414 5th Ave NW
Aberdeen, SD 57401

Mass of Christian Burial
June 3, 2022

10:30 AM
Sacred Heart Catholic Church Aberdeen

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