One of these might be right, but the overlap past 1916 is questionable.
Cora Brown
Wife
United States Census, 1920
birth: 1891 Illinois
residence: 1920 Ottawa Ward 5, La Salle, Illinois, United States
spouse: Charles Brown
children: Evelyn Brown, Joseph Brown, Ralph Hart, Edna Hart
Cora Brown
Wife
United States Census, 1930
birth: 1890 Illinois
residence: 1930 Edina, Knox, Missouri, United States
spouse: Charles A Brown
children: Charles Brown, Betty Brown
Bella Brown
Illinois Deaths and Stillbirths, 1916-1947
death: 16 October 1920 Chicago, Cook, Illinois
father: Alexander Grey
spouse: Charles Brown