RHOSLC's Mary Cosby Mourns Son Robert Jr., 23, After Death
February 28, 2026·about 3 hours ago·via Page Six

RHOSLC star Mary Cosby pays tribute to her son Robert Cosby Jr., who dies at 23 on February 23 in Utah. Police respond to a possible overdose call at her home around 6 p.m., which turns into a death investigation; a medical examiner probes the cause. Mary and Robert Sr. share on Instagram: "Our beloved son Robert Jr. has been called home to the Lord. Though our hearts ache, we take comfort in God’s promise and in knowing he is finally at peace.
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