History of Mary Cosby in Timeline

By Popular Timelines Editorial Team · Updated: February 25, 2026

Mary Cosby is an American television personality, renowned for her role as an original cast member on Bravo's 'The Real Housewives of Salt Lake City.' Her involvement in the reality series has brought her into the public eye, making her a recognizable figure in the realm of reality television and entertainment.

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Full Timeline

1968: Faith Temple Pentecostal Church Founded

In 1968, Mary Cosby's grandmother, Rosemary "Mama" Cosby, founded the Faith Temple Pentecostal Church.

October 17, 1972: Mary Cosby Born

On October 17, 1972, Mary Martha Cosby (née Jefferson, formerly Harris) was born. She later became known as an American television personality.

January 1997: Rosemary Cosby's Death

In January 1997, Mary Cosby's grandmother, Rosemary Cosby, passed away.

September 1998: Marriage to Robert C. Cosby

In September 1998, Mary Cosby married Bishop Robert C. Cosby, her step-grandfather, following her divorce from Dana Harris in the same month.

September 2020: Cast Member of The Real Housewives of Salt Lake City

In September 2020, Mary Cosby was announced as a cast member of Bravo's "The Real Housewives of Salt Lake City".

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April 2021: Charges Filed Against Mary Cosby

In April 2021, Mary Cosby was charged with unlawfully providing shelter to a runaway and contributing to the delinquency of a minor.

August 2021: Cosby Pleads Not Guilty

In August 2021, Mary Cosby pled not guilty to the charges of unlawfully providing shelter to a runaway and contributing to the delinquency of a minor.

September 2022: Charges Dropped Against Cosby

In September 2022, the charges against Mary Cosby for unlawfully providing shelter to a runaway and contributing to the delinquency of a minor were dropped.