She's Memphis Minnie. I found an arcticle from Greenville Ms dated - September 6, 1940. In this article, Minnie states that she is the same MINNIE WALLACE that lived in Greenville some 12 years earlier. At 500 Ohea Street that she rented from a mistah ehrlich. That would make a date of roughly 1928. I checked the 1930 census and found her at that location, as she said. It shows her as being born in 1911. According to current WIKI info: Birth name Lizzie Douglas