RHOSLC's Mary Cosby Mourns Son Robert Jr. After His Death at 23

The reality star shared a heartfelt tribute to her late son, who struggled with addiction.

Published on Mar. 3, 2026

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Mary Cosby, star of The Real Housewives of Salt Lake City, is mourning the loss of her 23-year-old son Robert Jr., who passed away on February 23 in Utah. Cosby shared a touching Instagram post with a throwback photo of her and Robert Jr. as a child, accompanied by a cover of Cyndi Lauper's "Time After Time." Robert Jr.'s struggles with addiction were documented on the reality show, and no official cause of death has been released, though police responded to a possible overdose call. Cosby and her husband expressed gratitude for prayers and finding comfort in their faith during this difficult time.

Why it matters

The death of Mary Cosby's son Robert Jr. at just 23 years old is a tragic loss that highlights the ongoing challenges of addiction, especially among young people. As a prominent figure on a reality TV show, Cosby's public mourning sheds light on the personal struggles many families face with substance abuse and the importance of open conversations around mental health.

The details

Robert Jr. appeared on several episodes of 'The Real Housewives of Salt Lake City' alongside his mom Mary Cosby. In a November 2024 episode, he spoke candidly about experiencing suicidal ideation and his substance abuse, which included heroin, Xanax, acid, Molly, cocaine and OxyContin. No official cause of death has been released, but police responded to a call involving a 'full arrest/medical emergency' for a 23-year-old male in what was described as a possible overdose.

  • Robert Jr. died on Monday, February 23, 2026 in Utah.
  • Mary Cosby shared a tribute to her son on Instagram on Friday, February 27, 2026.

The players

Mary Cosby

The star of The Real Housewives of Salt Lake City and pastor at Faith Temple Pentecostal Church in Salt Lake City.

Robert Cosby Sr.

Mary Cosby's husband and Robert Jr.'s father.

Robert Jr.

Mary and Robert Cosby Sr.'s 23-year-old son, who struggled with addiction and appeared on The Real Housewives of Salt Lake City.

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What they’re saying

“I'm Going to miss you bubs❤️🙏😢”

— Mary Cosby (Instagram)

“I love this photo of you two❤️”

— Heather Gay, RHOSLC Co-Star (Instagram)

“I know every age and stage with him was your favorite. I have always told you what a beautiful example of motherhood you have been to me. Honoring his life is so important and this photo is so special.”

— Whitney Rose, RHOSLC Co-Star (Instagram)

“What a beautiful photo of mother and son. You were always there for him. The bond was felt. I'm so grateful you two had so many special adventures together. You showed Robert the world and gave him so much love🙏🏼✝️❤️ I love you Mary.”

— Angie Katsanevas, RHOSLC Co-Star (Instagram)

The takeaway

The tragic loss of Mary Cosby's son Robert Jr. at just 23 years old underscores the ongoing struggles many families face with addiction and mental health challenges. Cosby's public mourning and the support from her RHOSLC co-stars highlight the importance of open conversations around these issues and the need for greater resources and support for those affected.