Deborah Marie Siefert
Deborah Marie Siefert
Obituary
Guest Book
Deborah Siefert Obituary
Deborah Marie Siefert
March 5, 1951 – July 19, 2025
With heavy hearts, we announce the passing of Deborah Marie Siefert, who left us on July 19, 2025, at the age of 74. A devoted daughter, loving sister, proud mother and grandmother, friend and independent soul, Deborah touched the lives of many with her kindness, strength, and selfless spirit.
Born on March 5, 1951, Deborah lived a life filled with purpose, laughter, and love. She proudly served her community for 25 years at the Muskego Post Office, where she was known for her reliability, warm smile, and dedication.
Deborah was the proud mother to two children, Mark and Denise (Alan), and a deeply devoted grandmother to Sara, Sam, and Ethan. She found immeasurable joy in her role as “Grandma,” always offering encouragement, support, and unconditional love. Her family was the heart of her world.
She was also a cherished daughter and loving sister, always there when needed, offering quiet wisdom, unwavering support, and a steady presence. She was preceded in death by her father, Clifford Heise, and is survived by her mother, Eleanor Heise, her children, Mark and Denise (Alan), and her siblings, John (Kathleen), Arlene (the late Gregory), and Scott (Cheryl). She was a beloved aunt to her loving nieces and nephews, who brought her great joy.
Debbie had a natural talent for building things and a passion for doing things on her own terms. She was creative, resourceful, and never afraid to tackle a new project. Her independence was matched by her generosity – always ready to lend a hand or a kind word to anyone in need.
She found joy in the simple pleasure of life – singing, bowling, hunting, and fishing. Her laugh was contagious, her stories unforgettable, and her presence a comfort to all who knew her.
Deborah will be remembered not only for what she did, but for who she was: kind, caring, and selfless – a true example of strength and love.
Her legacy lives on in her children, grandchildren, family, and all the lives she touched.
She will be deeply missed and forever loved.
View All Photos
To plant trees in memory, please visit the Sympathy Store.
W173 S7629 Westwood Drive, Muskego, WI 53150
People and places connected with Deborah
Recent Obituaries
Recent Obituaries
Recent Obituaries
Memories and Condolences
for Deborah Siefert
Make a Donation
in Deborah Siefert's name
How to support Deborah's loved ones
Should I Send Sympathy Flowers?
What kind of arrangement is appropriate, where should you send it, and when should you send an alternative?
Read more
What Should I Write in a Sympathy Card?
We'll help you find the right words to comfort your family member or loved one during this difficult time.
Read more
Resources to help you cope with loss
How to Cope With Grief
Information and advice to help you cope with the death of someone important to you.
Read more
Estate Settlement Guide
If you’re in charge of handling the affairs for a recently deceased loved one, this guide offers a helpful checklist.
Read more
Obituaries, grief & privacy: Legacy’s news editor on NPR podcast
Legacy's Linnea Crowther discusses how families talk about causes of death in the obituaries they write.
Read moreWays to honor Deborah Siefert's life and legacy
Obituary Examples
You may find these well-written obituary examples helpful as you write about your own family.
Read more
Obituary Templates – Customizable Examples and Samples
These free blank templates make writing an obituary faster and easier.
Read more
How Do I Write a Eulogy?
Some basic help and starters when you have to write a tribute to someone you love.
Read more
Sponsored