Wendy Dolores Koos

August 29, 1937January 15, 2021

Wendy Dolores Koos, 83, of Farmington Hills, passed away peacefully January 15, 2021. The daughter of the late Valentine and Bessie Beaser, she was born August 29, 1937 in Highland Park, MI.

Wendy graduated from Walled Lake Central High School in 1955 and received a Bachelor of Science in Nursing from Wayne State University. She spent the majority of her 50-year nursing career in the psychiatric field, as a psychiatric nurse, dual diagnosis counselor, and psychiatric nursing instructor.

She is survived by her husband of 44 years, Errol Koos of Farmington Hills; her children Scott Armstrong of Ann Arbor, Errol Koos Jr. (Julie) of Macomb, and Heidi Breeden (Wade) of Seattle; and her brother Bob Beaser (MaryAnn) of Ann Arbor. She was preceded in death by her two sons, Todd and Christian. She is also survived by her beloved grandchildren James, Jack, Nina, and Alex.

Wendy was known to all as perhaps the kindest and most loving soul possible. With a delightful sense of humor and taste for adventure, she embraced the joys of life even while bravely guiding her family through its challenges. Her love of experiencing new places lent itself to traveling throughout Europe, and living in her beloved San Francisco, Chicago, Seattle, and Toronto as well as her native Michigan.

The loss of our dear Wendy – deeply loved wife, mother, sister, grandma – is immeasurable. But we know her faith in God guided her in all she did, and we are blessed to know that she is now with Him and her sons.

A memorial service will be planned for spring/summer 2021. She will rest at Great Lakes National Cemetery in Holly.

In lieu of flowers, the family requests that donations be made to the St. Louis Center, 16195 Old U.S. 12, Chelsea, MI 48118.

Please leave the family a message of condolence or share a treasured memory by selecting "Add a Memory" Please register to be notified of any upcoming services later this spring.


  • Errol Edgar Koos, Husband
  • Scott Armstrong, Son
  • Heidi (Wade) Breeden, Daughter
  • Errol James (Julie) Koos, Son
  • The Late Todd Armstrong, Son (deceased)
  • The late Christian Koos, Son (deceased)
  • Bob (Mary Ann) Beaser, Brother
  • James Koos, Grandson
  • Jack Koos, Grandson
  • Nina Koos, Granddaughter
  • Alex Tollefson, Grandson


No public services are scheduled at this time. Receive a notification when services are updated.


Wendy Dolores Koos

have a memory or condolence to add?

Carley & George Korchinsky

January 28, 2021

We were deeply saddened to hear of the passing of our dear friend Wendy. We will always remember the warm, precious and sometimes wild and crazy times we shared with her and Errol. Wendy was filled with compassion, love and grace who always had time for others. She was truly a treasured friend who will stay in our hearts forever.

Pam Drouillard

January 26, 2021

Dear Errol and family, so sorry to hear of Wendy’s passing. I have fond memories of family gatherings at Aunt Bessie and Uncle Val’s home on the lake, although my older brother and sister shared many more special times with all the cousins. I always admired Wendy and thought she was so pretty and sharp and successful in her career, but always so sweet and caring. I’ve attached a photo from my parents (John & Carolyn Berry) wedding in 1942 when Wendy was their flower girl and Uncle Val a groomsman...hugs to the family

Mary Lehman Kenny

January 18, 2021

Although I have not seen Wendy in a number of years, she was my roll model growing up. I have so many fond memories of family parties at her parents home in Westridge. She was a beautiful lady inside and out. My prayers are with all of the family. My deepest sympathy. Mary Kenny

Angela Uhl

January 18, 2021

My heartfelt condolences for the loss of your beautiful wife and mother. My prayers are with your family during this time of grief and remembrance.
- Angela Uhl

Sharon Williams

January 18, 2021

Dear Errol and family:
I'm so sorry and sad to hear of Wendys passing. God bless you all and comfort you with His love.

Rest in peace, Wendy. I will miss you.

Mary Ridenour

January 18, 2021

Dear Errol,
It is with a “heavy heart” I learned of Wendy’s passing into Glory this am.
I have fond memories of Wendy’s loving heart and her heartfelt wisdom she shared during the years you lived in Westacres.
I share your grief Errol .
God Bless you, Mary Beth Ridenour

Rick Russell

January 17, 2021

Some of my most vivid memories of childhood centered on the Armstrong household playing at Scott’s under the nurturing care of Mrs. Armstrong (as she was known to me). Magnetic hockey in his living room, sleepovers, endless days and nights canvassing Westacres with Scott, Mike Aughenbaugh, Jamie Burke and the rest of the gang. Thank you Mrs. Armstrong Koos for being one of my favorite Moms. You touched my life and those of so many of others. Rest In Peace.

With deepest gratitude,

Rick Russell

John Laing

January 16, 2021

Liz and I are so sorry to hear of Wendy’s passing. She was such a wonderful person and made the world a much better place. We have such great memories of our travels with Errol and Wendy and our time together.
May she Rest In Peace and our thoughts and prayers are with Errol and the family.

John & Liz.

Keith and Janice ROBINSON

January 16, 2021

Dear Errol: We are so sad to hear of Wendy's passing and we will miss her immensely. Miraculously, Janice and I were talking about the two of you yesterday as we were going through some old photo albums reminding ourselves of good times and enduring friendships. Janice loved talking with Wendy and said that her most special gift was her ability to really hear and feel what you were saying. After a conversation with her you felt really loved and cared for. She was a lovely person with so much grace, charm and dignity. We will continue to think of her often and with great joy. Love and best wishes always to the Koos clan, Keith and Janice

Larry Wamsley

January 16, 2021

So sorry for your loss. Positive thoughts for those left behind with assurance that she has gone to a better place for her richly deserved rewards!


Larry and Mj