| Sources |
- [S1777] Ancestry.com, 1850 United States Federal Census, (Name: Ancestry.com Operations, Inc.; Location: Provo, UT, USA; Date: 2009;), The National Archives in Washington, DC; Record Group: Records of the Bureau of the Census; Record Group Number: 29; Series Number: M432; Residence Date: 1850; Home in 1850: Martinsville, Clark, Illinois; Roll: 100; Page: 263b.
Record for John Montgomery
https://search.ancestry.com/cgi-bin/sse.dll?db=8054&h=15658277&indiv=try
- [S4015] Ancestry.com, 1860 United States Federal Census, (Name: Ancestry.com Operations, Inc.; Location: Lehi, UT, USA; Date: 2009;), The National Archives in Washington D.C.; Record Group: Records of the Bureau of the Census; Record Group Number: 29; Series Number: M653; Residence Date: 1860; Home in 1860: Cumberland, Clark, Illinois; Roll: M653_162; Page: 91; Family History Library Film: 803162.
Record for John Montgomery
https://search.ancestry.com/cgi-bin/sse.dll?db=7667&h=37811835&indiv=try
- [S3274] Ancestry.com, Illinois, County Marriages, 1800-1940, (Name: Ancestry.com Operations, Inc.; Location: Lehi, UT, USA; Date: 2016;), Various Illinois County Courthouses; Various Illinois County Courthouses; Marriage Records; Collection Title: Marriage Records.
Record for John Montgomery
https://search.ancestry.com/cgi-bin/sse.dll?db=61370&h=716494&indiv=try
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