↑ 1.01.11.2 "United States Census, 1880," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MDQP-SC4 : 15 January 2022), Mary J. Allen in household of Hiram Allen, Campbell, Tennessee, United States; citing enumeration district , sheet , NARA microfilm publication T9 (Washington, D.C.: National Archives and Records Administration, n.d.), FHL microfilm .
↑ 3.03.13.2 1920 United States Federal Census Publication: Name: Ancestry.com Operations Inc; Location: Provo, UT, USA; Date: 2010; Year: 1920; Census Place: Civil District 2, Henderson, Tennessee; Roll: T625_1747; Page: 10B; Enumeration District: 89; Image: 111 Quality or Certainty of Data: 3
↑ 4.04.14.2 1930 United States Federal Census Publication: Name: Ancestry.com Operations Inc; Year: 1930; Census Place: District 4, Campbell, Tennessee; Roll: 2235; Page: 5B; Enumeration District: 0014; Image: 558.0; FHL microfilm: 2341969 Quality or Certainty of Data: 3
↑ First-hand information as remembered by Sharon Whitlock, Sunday, February 9, 2014.
See also:
Find a Grave, database and images (https://www.findagrave.com/memorial/26313164/mary-jane-allen: accessed 11 November 2022), memorial page for Mary Jane Lay Allen (2 Feb 1848–2 Jul 1909), Find a Grave Memorial ID 26313164, citing Stanfield Cemetery, Stanfield, Campbell County, Tennessee, USA; Maintained by Larry & Edie Doepel (contributor 46583214) .
"United States Census, 1850," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MCDW-B5F : 23 December 2020), Mary Jane Lay in household of William Lay, Campbell, Tennessee, United States; citing family , NARA microfilm publication (Washington, D.C.: National Archives and Records Administration, n.d.).
"Tennessee State Marriage Index, 1780-2002," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:VN4Q-TRL : 4 December 2014), Heram Allen and Mary Jane Lay, 23 Jul 1868; from "Tennessee State Marriages, 1780-2002," database and images, Ancestry (http://www.ancestry.com : 2008); citing p. 8, Campbell, Tennessee, United States, Tennessee State Library and Archives, Nashville, Tennessee.