Is Mary Cosby Related to Bill Cosby? The Truth Behind the Rumors

Mary Cosby is one of the stars of the Bravo reality show ‘Real Housewives of Salt Lake City’, which premiered in November 2020. She is known for her lavish lifestyle, her controversial marriage to her step-grandfather, and her role as the leader of a Pentecostal church. But is she also related to the infamous Bill Cosby, the disgraced comedian and actor who was convicted of sexual assault in 2018?

No Evidence of Any Relation

The rumors that Mary Cosby is related to Bill Cosby have been circulating online since she joined the cast of ‘RHOSLC’. However, there is no evidence to support this claim. Fans have pointed out that Mary’s husband Robert Cosby is not Bill’s brother, and that their last names are very common among African Americans.

According to Wikipedia, Bill Cosby was born William Henry Cosby Jr. in Philadelphia, Pennsylvania, in 1937. He is the son of Anna Pearl and William Henry Cosby Sr., who served in the U.S. Navy. He has three brothers: James, Russell, and Robert, who died in 2017. None of them have any connection to Mary or Robert Cosby.

According to, Mary Cosby was born Mary Martha Harris in Salt Lake City, Utah, in 1975. She is the daughter of Rosalind Cazares and an unnamed father. She has two siblings: a brother named Omar and a sister named Erica. Her mother was the leader of Faith Temple Pentecostal Church, which was founded by her grandmother Rosemary \”Mama\” Cosby.

A Controversial Marriage

Mary Cosby married her step-grandfather Robert Cosby Sr. in 1998, when she was 23 and he was 46. Robert was previously married to Mary’s grandmother Mama, who died in 1997. According to Mary, Mama left a will that instructed her to marry Robert and take over the church and the family fortune.

However, this claim has been disputed by other members of the family, who accused Mary and Robert of forging the will and taking over Mama’s assets without her consent. They also claimed that Mary and Robert were having an affair while Mama was still alive.

Mary and Robert have one son together, Robert Jr., who was born in 1999. They also have several stepchildren from their previous marriages.

A Leader of a Church

Mary Cosby is the First Lady and Evangelist of Faith Temple Pentecostal Church, which has three locations in Salt Lake City, Indiana, and Florida. She inherited the church from her grandmother Mama, who was a prominent figure in the Pentecostal community.

However, some former members of the church have accused Mary of running a cult and exploiting her followers for money and power. They claimed that Mary demanded 10% of their income as tithes, controlled their personal lives, and made them work for free at her businesses.

Mary has denied these allegations and defended her church as a place of love and faith. She has also said that she is not a cult leader, but a \”Godmother\” who helps people with their problems.

A Reality TV Star

Mary Cosby joined the cast of ‘Real Housewives of Salt Lake City’ in 2020, along with five other women: Lisa Barlow, Heather Gay, Meredith Marks, Whitney Rose, and Jen Shah. The show follows their lives as they navigate their friendships, families, careers, and religions in Utah.

Mary has been involved in several conflicts with her co-stars, especially Jen Shah, who accused her of being racist and judgmental. Mary has also faced criticism from viewers for her extravagant spending habits, her plastic surgeries, and her controversial opinions on race and religion.

Mary has said that she joined the show to share her story and inspire others with her faith. She has also said that she hopes to clear up some of the misconceptions about her marriage and her church.


In conclusion, there is no evidence that Mary Cosby is related to Bill Cosby. They share a common last name but have different backgrounds and families. Mary is a reality TV star, a church leader, and a controversial figure in her own right..

Doms Desk

Leave a Comment