[S4366] Illinois Secretary of State, "Illinois Statewide Marriage Index, 1763-1900," database, Illinois State Archives (http://www.cyberdriveillinois.com/departments/archives/archives.html : accessed 22 June 2014), entry for Robert W. Hill-Abigail Walker, Douglas County, 28 March 1878; citing Douglas County, Marriage Book 1:15, license no. [not stated]. .