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Robert Cosby Jr., Son of RHOSLC Star, Dies at 23

Published 25 February 2026

Robert Cosby Jr., the 23-year-old son of "The Real Housewives of Salt Lake City" star Mary Cosby, died Monday evening in Salt Lake City, Utah, following a medical emergency that authorities initially treated as a possible overdose.

Salt Lake City police responded to the call around 6:14 p.m. at a residence, where dispatchers reported the young man was unconscious and not breathing. Emergency responders administered Naroxone, the opioid overdose reversal medication known as Narcan, but efforts to revive him were unsuccessful. Firefighters and paramedics arrived at the scene, and medical personnel pronounced him dead on site. The incident shifted from an overdose response to a death investigation, though an official cause has not been released.

Robert's death came just weeks after his release from Salt Lake County Metro Jail in early February. He had served two months of a 99-day sentence, receiving credit for time already served, following a guilty plea in November to eight charges. Those included felony property damage, violations of a pretrial protective order, assault on a peace officer, criminal trespass, and misdemeanor assault, all stemming from incidents involving his...

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