Mary Catherine Greenawalt was born in Walnut Creek, California to Joan O'Reilly Greenawalt and Larry Greenawalt. Being one of 5 kids, she had many opportunities growing up to use her imagination and entertain. Though she was somewhat of a shy kid, she knew by the age of 6 she wanted to be a performer. In 2017, Mary produced and acted in the indie feature film, Hudson, which is taking the 2019 festival circuit by storm. She spends her time between her home in Los Angeles and in New York both acting and producing, as well as playing music.