
In Loving Memory
TM
Tressa May Held Winters Coss
February 9, 1943 — May 24, 2026
West Hills California—With heavy hearts and profound gratitude for a life well-lived, we announce the passing of Tressa May Held Winters Coss on May 24, 2026, at the age of 83. Born on February 9, 1943, in Windsor, Colorado, Tressa was a beacon of resilience and grace whose life was marked by unwavering love, dedication, and an enduring legacy of kindness.
Tressa entered this world as the cherished daughter of Robert Held and Viola Frances Walters Held. Her father, Robert, passed away when she was just a year old, and her mother later found love again with Palmer (Paul) T. Winters, who adopted Tressa at the tender age of five. This new union brought stability and love to Tressa's early years, shaping her into the compassionate and resilient woman we all came to admire.
A bright student, Tressa graduated from Westminster High School in 1961, where she was a proud member of the National Honor Society during her senior year. Her pursuit of knowledge led her to Regis College, where she majored in Business—a testament to her ambition and intellect. Tressa's career at Neo-Data in Colorado was characterized by her dedication and skill, leaving a lasting impact on her colleagues and the industry. Tressa worked for a real estate office in Arizona and United States Dept of Commerce.
Tressa had the best friends from her Westminster High School Class of 1961.
Tressa lived in Colorado and then Arizona and then California.
When Tressa moved to Arizona after Jack passed away, she met Louise Mabry at the real estate office that they both worked at and they became good friends and shared a home together for 18 years.
Tressa loved bird watching and went on several trips all over the United States and she traveled to China and Antarctica.
On June 12, 1970, Tressa married the love of her life, Jacob (Jack) Coss. Their union was a testament to partnership and devotion, weathering life's storms with grace and love. Together, they nurtured a family that would become Tressa's greatest joy and legacy. She was predeceased by her beloved husband Jack, whose memory she cherished every day.
Tressa was a devoted mother to her children, her son Randen Lee Beightol passed away Sept 19, 2023, daughter Terry Ahlbrandt and husband Mike Ahlbrandt and son Steven Coss and wife River Coss, and a loving grandmother to her 7 grandchildren. Her heart overflowed with pride and love for her 10 great-grandchildren.
Tressa's granddaughter Courtney Townley and husband Chris Townley had a very special relationship with Tressa. Courtney was always there for her Grandma Tressa. Family thanks Courtney for her wonderful care of her Grandma Tressa.
Her family extended beyond her immediate descendants. Tressa is survived by her dear sisters, Karen Mumma and husband David Mumma and Jody Amsberry, nieces Crystal Meyer and Amber Martin, nephews Craig Martin and wife Charmaine Martin and Grant Amsberry and Great Nieces Emerald and Kiley and Sophia and Great-Great nephews Trenton and Wyatt.
Tressa also had 2 other Nieces and 2 other Nephews and 5 Great Nieces and 9 Great Nephews and 4 Great-Great Nieces and 5 Great-Great Nephews, each of whom had a special place in her heart.
Tressa was predeceased by her parents, Robert Held, Viola F. Walters Held Winters, and Palmer (Paul) T. Winters, her husband Jacob (Jack) Coss, and her son Randen Lee Beightol, whose spirit she carried with her always.
Throughout her life, Tressa embodied resilience, compassion, and grace. Her warmth and kindness touched all who had the privilege of knowing her. Her legacy will continue to inspire and guide her family and friends.
No services are scheduled- Tressa's ashes will be spread where her husband Jack's were spread where those who loved her will gather to honor her remarkable journey and the indelible mark she left on our hearts. In lieu of flowers, the family kindly requests that donations be made to a charity of your choice in Tressa's name, continuing her lifelong commitment to helping others.
Tressa May Held Winters Coss was a remarkable woman whose life was a testament to love, family, and faith. She will be deeply missed and lovingly remembered by all who were touched by her presence.