Robert Cosby Jr., son of The Real Housewives of Salt Lake City star Mary Cosby passes away at 23

In recent years, Mary had openly discussed her son’s struggles with addiction.

• Mary Cosby's son Robert Jr. dies at 23 from apparent overdose
• Police responded to a medical emergency at Mary Cosby's Utah home
• Family expressed grief and faith after his death

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Robert Cosby Jr., the 23-year-old son of The Real Housewives of Salt Lake City personality Mary Cosby, has died at the age of 23.

According to the Salt Lake City Police Department, as reported by Hello!, Robert Jr. was discovered unresponsive on Monday, February 23, in what authorities believe to be an apparent overdose. He was the only child of Mary and her husband, Robert Cosby Sr..

In a heartfelt statement shared with HELLO!, the grieving parents said, "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. We are grateful for your prayers and trust in the Lord to carry us through this time of sorrow.”

Audio from Salt Lake City police dispatch revealed that officers were sent to Mary’s Utah residence shortly before 6 p.m. local time on February 23 after receiving a call about “a 23-year-old male” who was reportedly “not conscious” and “not breathing.” Authorities believe the individual was Robert Jr.

As reported by PEOPLE, first responders administered one dose of Narcan — an over-the-counter nasal spray used to counteract life-threatening opioid overdoses — as the situation was described as a “full arrest/medical emergency.”

Three police units responded to the call. Upon arrival, what initially began as an overdose investigation was later classified by the Salt Lake City Police Department as a death investigation.

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In recent years, Mary had openly discussed her son’s struggles with addiction. In November 2025, Robert Jr.’s estranged wife, Alexiana Smokoff, filed for divorce after three years of marriage. The 23-year-old was subsequently arrested for violating a protective order obtained by Alexiana’s family and was released from the Salt Lake City County Metro Jail in February after serving a two-month sentence.

Mary Cosby first appeared on The Real Housewives of Salt Lake City during seasons 1 and 2, later returning as a friend of the cast in season 4 before reclaiming her position as a full-time housewife in seasons 5 and 6.