Mary Magdalene Marshall (September 7, 1783 – January 26, 1877) was an American real-estate investor and philanthropist.

She established The Marshall House hotel in Savannah, Georgia, and had erected in the city several notable buildings that are still standing today.

[1] Her father owned a large plantation three miles to the west of Savannah, and lived next door to Mordecai Sheftall on Broughton Street.

[1] Upon her father's death in 1795, it is believed Mary was raised by her mother and a governess, learning the art of "social graces, handiwork, etc.

The Marshalls were living at the northwestern corner of West Broad and William Streets.

[1] Margaret filed for divorce from Barclay in 1859, citing "intoxication, physical abuse, and adultery.

In her later years, Mary Magdalene Marshall appointed Dr. James Johnston Waring, a family friend and grandfather of the aforementioned Joseph Frederick Waring,[3][4] as codicil to her will, making him a trustee of her estate and guardian of her granddaughter.