[S1679] Illinois Secretary of State, "Illinois Statewide Marriage Index, 1763-1900," database, Illinois State Archives (http://www.cyberdriveillinois.com/departments/archives/archives.html : accessed 28 October 2011), entry for William P. Sinclair-Fetna Walker, Macoupin County (1862); citing Macoupin County Marriage Book 5: 3, license no. 4035.