Background
She was born on March 24, 1901, in Buffalo, New York, the daughter of painter Hamilton Irving Marlatt (1867–1929) and Lillie Belle (Knoche) Marlatt.
She was born on March 24, 1901, in Buffalo, New York, the daughter of painter Hamilton Irving Marlatt (1867–1929) and Lillie Belle (Knoche) Marlatt.
She attended the public schools in Mount Vernon. She graduated Bachelor of Arts from Barnard College in 1921.
In sociology from Columbia University in 1922. And Bachelor of Laws from New York University School of Law in 1925. She was admitted to the bar in 1926, and practiced law in Mount Vernon.
In 1949, she was appointed to the Board of Supervisors of Westchester County, to fill the vacancy caused by the resignation of Charles L. Hughes.
Frances Marlatt was a member of the New York State Assembly (Westchester Company, 3rd Doctorate) from 1954 to 1960, sitting in the 169th, 170th, 171st and 172nd New York State Legislatures.