Mary Cosby’s 23-year-old son Robert Jr. died in Salt Lake City on Feb. 23, 2026, from a suspected overdose.

Mary Cosby’s son, Robert Jr., died at 23 in Salt Lake City on Feb. 23, 2026, after a suspected overdose; emergency responders administered Narcan but could not revive him, prompting a death investigation. The former *Real Housewives of Salt Lake City* star shared a heartfelt tribute on Feb. 28, honoring her son’s memory and expressing grief while finding comfort in faith. Cynthia Bailey, a fellow cast member, shared on her podcast that she called Cosby after the loss, describing a tearful, supportive conversation. The Bravo community, including Andy Cohen, has offered condolences, highlighting Robert Jr.’s openness about addiction and mental health struggles.