Josephine Ball was born Jul 1852 in Wisconsin, the daughter of George H. Ball. Her mother's maiden name was Munson. She married Arthur Gilman Newcomb (10 Apr 1851 - 31 May 1912) in Minnesota, Mar 1873. They had four children: Mertie, Maud, Earl Aubrey, George Martin.
Sources: B.M. Newcomb and U.S. Census records.