Cover photo for Teresa Cassell's Obituary
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1965 Teresa 2025

Teresa Cassell

May 18, 1965 — June 8, 2025

Windsor

Teresa Marie Cassell, age 60, of Windsor, Colorado, died on June 8, 2025. Born in Manhattan, Kansas on May 18, 1965, she was the first of five siblings and naturally grew into the role of organizer, planner and caregiver, traits she carried throughout her life.

At a young age, Teresa and her family moved to Colorado where she proudly called home the remainder of her life.

Teresa married Joel E Cassell in 1988 and together they had two children, Andrew (“Andy”) and Nicholas ("Nick") Cassell. She was a devoted mother to her son’s, and a loving presence to her many nieces and nephews. She had a remarkable ability to be present for others, always showing up when someone needed help, support, or simply a kind word. Her life was defined by deep care for her family, friends, and community.

A woman of strong faith, Teresa worked for several years at Our Lady of the Valley Catholic Church, where her Catholic beliefs were not only practiced but lived. She was known for her sense of fun, creativity, and quick mind especially when it came to watching Jeopardy or engaging in trivia. She also was the proud owner of a cleaning business and took great pride in her work, dedicating many years to serving her community with care and commitment.

Teresa was preceded in death by her father, Duane A Suppes: her mother, Annabel L Suppes: and her beloved son, Nicholas Cassell. She is survived by: - her son: Andrew Cassell - her siblings: Christopher Suppes (Tamara), Cathy Weiss (Donald), Cheryl Legg (Kyle), and Melissa Kitowski (Michael) and many nieces and nephews, each of whom held a special place in her heart. She loved them deeply and took great joy in being part of their lives.

Her life was one of warmth, generosity, and unwavering devotion. Teresa will be remembered for the strength of her presence, the joy she brought to others, and the love she gave freely.

A visitation will be held at Marks Funeral Home in Windsor CO on July 10, 2025. A rosary will be said at 6:00pm and visitation from 6:30pm to 8:00pm.

Funeral Services will take place on Friday July 11,2025, at Our Lady of the Valley Catholic Church, 1250 7th St, Windsor Co, 80550, at 11:00am. A burial service will follow immediately after the Mass. A reception will be held in the parish hall following the burial. Family and friends are warmly invited to attend all services and join in honoring and celebrating Teresa’s life

To order memorial trees or send flowers to the family in memory of Teresa Cassell, please visit our flower store.

Service Schedule

Upcoming Services

Rosary/Visiting

Thursday, July 10, 2025

6:00 - 8:00 pm (Mountain time)

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Funeral Service

Friday, July 11, 2025

Starts at 11:00 am (Mountain time)

Our Lady of the Valley Catholic Church

1250 7th St, Windsor, CO 80550

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Past Services

Burial

Wednesday, June 11, 2025

12:00 - 12:30 pm (Mountain time)

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