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Fredrick Douay Theurer
Viewing: October 9, 2019 (Wednesday) from 2:00 PM to 4:00 PM & 6:00 PM to 8:00 PM
Service: October 10, 2019 (Thursday) at 11:00 AM
Location: St. Francis of Assisi Catholic Church

Frederick Douay Theurer

Fred passed away peacefully on Saturday October 5, 2019 surrounded by his wife and family.  Fred was born to Edward Arthur and Helen Theurer on April 9, 1937 in Washington, DC. He was the Youngest of three sons.

He grew up in Washington, DC and attended Archbishop John Carroll High School.  He earned his Bachelors of Science in Civil Engineering from the University of Maryland, College Park in 1959. He went on to earn his Masters of Science and Doctorate in Civil Engineering from Colorado State University in 1975. Taking just two years to do so.  He spent his professional career with the United States Department of Agriculture, National Resource Conservation Service.  He loved his work and never really considered it a job but rather a calling.  He was considered amongst the foremost experts in the world in his field of hydraulic engineering and in the later part of his career, he represented the United States government abroad

As much as Fred was devoted to his work, his wife Marge was, bar far and away, the love of his life.  The sun rose and set on her through the sixty years of their marriage.  They shared their love in abundance with their six children and their spouses: Maureen Joseph and her husband Richard, Kenneth Theurer and his wife Laurie, Christine Morse and her husband Tom, Patrick Theurer and his wife Karen, Matthew Theurer and his wife Maria. He was predeceased by his beloved second daughter, Theresa, who passed away in 1996.

Over his lifetime, they lived in California, Pennsylvania, Colorado and Maryland.  The Theurer family spent most of their summers traversing the country, with trailer, tent, and family dog (Snoofy) in tow, following Fred to the remotest rural locations in the United States as he shared his love and knowledge of conservation with countless agricultural communities.  Togetherness can never be overrated.  Although it can be over-experienced.

He was known as O’Pa to his seventeen grandchildren and 2π great grandchildren.  He was famous for his propensity to give “squeezey” (very, very tight) hugs.  Despite the occasional groans, every one of them not-so-secretly loved his affection.

Friends may call at DeVol Funeral Home, 10 East Deer Park Drive, Gaithersburg, MD on Wednesday from 2:00pm to 4:00pm and 6:00pm to 8:00pm.  Mass of Christian burial will be offered at St. Francis of Assisi Catholic Church 6701 Muncaster Mill Road, Derwood, MD 20855 on Thursday October 10, 2019 at 11:00 am.  Interment will be held at Gate of Heaven Cemetery.  In lieu of flowers, contributions may be made to Cure PSP (

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DeVol Funeral Home