Both John and Edward owed land in Porter County, near the border with Lake County.
In 1870 were still living in Indiana (census data). However, by at least 1873, the Bell family was living in Kansas. (In 1873, John A. Bell wed Amanda Jones.) By 1875 Mildred Bell is living separately from John R. Bell3.
John R. Bell is listed several pages later in there census.
In the 1880s they both owned land about four miles apart.
In the 1885 Kansas Census she states that she is widowed. Shortly after this they packed up and headed west to Comanche County and then Stevens County. John R. Bell is buried in Stevens County, Kansas where the gravestone states that he died in 1889. Mildred Bell remarried and purchased land near her son John A. Bell in Stevens County. She died in 1898.
1. "Indiana Marriages, 1811-2007," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:VNTX-P1Y : accessed 28 July 2015), John R Bell and Mildred Mahany, 05 Apr 1850; citing , Lake, Indiana, county clerk offices, Indiana; FHL microfilm 2,413,488.
2. "Indiana Marriages, 1811-2007," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:KDH3-KTQ : accessed 28 July 2015), Edward Mahony and Mildred Jane Hughes, 09 Dec 1844; citing , Porter, Indiana, county clerk offices, Indiana; FHL microfilm 1,686,155.
3. Kansas State Historical Society; Topeka, Kansas; 1875 Kansas Territory Census; Roll: ks1875_10; Line: 55 Ancestry.com. Kansas State Census Collection, 1855-1925 [database on-line]. Provo, UT, USA: Ancestry.com Operations, Inc., 2009.