Robert Cosby Jr. Obituary, Cause of Death – In Loving Memory of Mary Cosby’s Son Dies at 23
Robert Cosby Jr., the son of The Real Housewives of Salt Lake City star Mary Cosby and Robert Cosby Sr., died on February 23, 2026, at the age of 23.
His death has left his family and loved ones grieving, while his mother has since spoken publicly about the profound impact of his passing and the difficult process of moving forward.
Robert Jr. was Mary Cosby’s only child with her husband, Robert Sr. His struggles with addiction had previously been documented publicly through RHOSLC, making his death an especially painful loss for his family.
Robert Cosby Jr. Cause of Death
Robert Cosby Jr. died following an overdose, according to reporting about his death. A spokesperson for the Salt Lake City Police Department previously confirmed that officers responded to a call concerning an overdose that became a death investigation.
Robert Jr. was 23 years old.
His death came just 20 days after he was released from jail. According to PEOPLE, he had been released on February 3 after serving 86 days related to charges including assault and violating a protective order.
Robert Cosby Jr.’s Struggle With Addiction
Robert Jr.’s struggles with addiction and suicidal ideation had been discussed publicly during his time connected to The Real Housewives of Salt Lake City.
Mary later reflected on her son’s battle and the hope she had that he would eventually recover. In an interview published in September 2026, she said she had believed he would get better and become an example of how people can change.
His death brought renewed attention to the difficult circumstances he had faced before his passing.
Mary Cosby Speaks About Her Son
Following Robert Jr.’s death, Mary shared her grief publicly while also remembering her son with love and faith.
In the aftermath of his passing, she said the family took comfort in their faith and in the belief that Robert was finally at peace. She later shared photographs of her son on social media, writing about how much she would miss him.
Mary has continued to speak about Robert Jr. as someone whose presence remains deeply important to her.
In a September 2026 interview with Vulture, she explained that she felt Robert would want her to continue living her life and pursuing her work.
Returning to RHOSLC After Robert’s Death
Mary Cosby returned to filming The Real Housewives of Salt Lake City only a few weeks after her son’s death.
She explained that producers had given her the option to take a year away from the show, but she ultimately decided to continue. Mary said she believed Robert would want her to keep going, shine and do her best in life.
Production on Season 7 had initially been scheduled to begin during the week Robert died but was paused following his passing. Filming resumed in early March, with Mary eventually returning to work alongside her castmates.
Mary has said she hopes viewers see her strength as she navigates life after losing her son.
Remembering Robert Cosby Jr.
Robert Jr. was remembered by his mother as someone who had a profound place in her life.
During the Season 7 premiere, Mary described Robert as her best friend and spoke about the deep emotional bond they shared. She also reflected on his struggles and the pain of knowing she could not protect him from everything he faced.
Despite the circumstances surrounding his death, Mary continues to remember her son with love and faith.
She has said that she feels a sense of peace in believing that Robert is no longer struggling or in danger.
A Mother’s Grief
The loss of a child has profoundly affected Mary, who has described Robert’s death as an experience that changed her.
Rather than allowing the tragedy to end her life or career, she chose to continue moving forward while carrying her son’s memory with her.
Mary has said that Robert’s spirit will remain with her and that she believes he would have wanted her to continue.
Robert Cosby Jr. died at 23, leaving behind his parents, loved ones and many people who knew his story through RHOSLC.
His memory continues to be part of Mary Cosby’s life as she navigates grief, faith and the difficult process of moving forward after the loss of her son.