"United States Census, 1850," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:M4HK-LTY : 22 December 2020), Mary E Alison in household of Sineca Alison, Little Britain Township, Lancaster, Pennsylvania, United States; citing family , NARA microfilm publication (Washington, D.C.: National Archives and Records Administration, n.d.).