Mary was one of two people in the Peters family who were commonly known as "Aunt Mary". She was often referred to as "Mary-Bob" after her husband Bob Peters to distinguish her from "Mary-Howard" who was the wife of Howard Peters. "Mary-Bob" was not used as her name, just as a way to refer to her unambiguously.

After the death of her mother, Mary was raised by her father's sister Eva (Ev) Hudson and Ev's husband John Henry Holloway. Ev was commonly known as "Aunt Ev", even by people who were not her nieces and nephews.

research notes by Jerry Bryan, 12/7/2016.