Post, Marjorie Merriweather (15 March 1887–12 September 1973), business owner, entertainer, and philanthropist, was born in Springfield, Illinois, the daughter of Charles William Post, founder of Postum Cereal Company, and Ella Letitia Merriweather. After several of Charles Post’s entrepreneurial ventures failed, his family entered him in a sanitarium in Battle Creek, Michigan, in 1891. The sanitarium’s doctor, ...