(Research):"United States Census, 1850," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M8DC-B42 : 12 April 2016), Ri* Riley, Loudoun county, part of, Loudoun, Virginia, United States; citing family 1352, NARA microfilm publication M432 (Washington, D.C.: National Archives and Records Administration, n.d.).