For the wife of explorer David Livingstone see Mary Livingstone (née Moffat)Mary Livingstone (born Sadie Marks or possibly Sadye Marks, June 23, 1906 (or possibly 1905) – June 30, 1983), was an American radio comedienne and actress. She was the wife and radio partner of comedy great Jack Benny. Enlisted almost entirely by accident to perform on her husband's popular program, she proved a talented comedienne.