Mary Anne Smith also known as Mary Smith and Marion Smith was born in Galway, Ireland in 1899 to Thomas Smith and Bedelia Rabbitt. By 1914 she was living in Chicago. She became a stenographer. In 1922 she married John Joseph Brennan (1888-1962) following his return from military duty in France. They lived in Cook County during their married lives together. She outlived her husband by 13 years and is buried beside him in Holy Sepulchre Cemetery, Chicago.