Robert Cosby Jr. was the only son of Mary Cosby, the long-running cast member of The Real Housewives of Salt Lake City. Born into a life that became increasingly public through reality TV, he was 23 years old when he tragically died on February 23, 2026 following a suspected overdose.
Early Life and Public Storyline
Robert Jr. grew up in Salt Lake City, Utah, as the son of Mary Cosby and her husband, Robert Cosby Sr. His mother gained fame on The Real Housewives of Salt Lake City, which premiered on Bravo in 2020. Mary, known for her role as a church leader and reality TV personality, often shared parts of her personal life on the show — including her struggles as a parent.
As a young adult, Robert Jr. appeared on the reality series alongside his mother. Viewers witnessed his complex journey, which included candid discussions about substance abuse, mental health, and legal challenges. Over several seasons, he openly talked about starting drug use as a teenager and the impact it had on his life and relationships.
Struggles With Addiction and Legal Issues
Robert Jr.’s battle with addiction was a recurring theme both off and on camera. He struggled with drug dependency for years, which led to:
-
Multiple arrests related to substance use and legal issues over the past few years.
-
A two-month jail stint early in 2026, after pleading guilty to several charges, including violations of court orders.
-
A public effort toward rehabilitation, including rehab programs and attempts at sobriety, though he continued to face setbacks.
Despite these challenges, he often spoke about his love for his mother and his hopes for recovery, talking to reporters about the support Mary provided throughout his struggles.
The Circumstances of His Death
On February 23, 2026, emergency responders were called to Mary Cosby’s home in Salt Lake City for what was initially reported as a medical emergency involving Robert Jr. According to dispatch audio and police reports, he was found unconscious and not breathing, and was given Narcan — an opioid overdose-reversing medication — before responders arrived. Despite life-saving efforts, he was pronounced dead at the scene at just 23 years old.
The death is under investigation, and authorities are examining the possibility of an overdose as the cause.