Tragic death shocks RHOSLC family as Mary Cosby’s son dies at 23 shortly after jail release

Robert Cosby Jr., 23, the son of Real Housewives of Salt Lake City star Mary Cosby, has died. Police responded to an unresponsive man at a residence; investigators initially described it as a possible overdose and later opened a death investigation. He was released from Salt Lake County jail about three weeks earlier after a two‑month sentence. Mary Cosby and her husband posted messages of grief, and coverage noted his prior legal troubles, including arrests and a DUI, with tributes pouring in from RHOSLC colleagues.