‘RHOSLC’ star Mary Cosby’s son, Robert Cosby Jr., dies at 23 mBlip / 2 hours ago February 25, 2026 From USA TODAY. Robert Cosby Jr., the son of ‘Real Housewives of Salt Lake City’ star Mary Cosby, has died at the age of 23. Read more: https://www.usatoday.com/story/entertainment/tv/2026/02/25/mary-cosby-son-robert-dead-rhoslc-bravo/88863919007/
