"United States Census, 1850," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MD4L-H32 : 22 December 2020), David G Porter, Washington, Maryland, United States; citing family , NARA microfilm publication (Washington, D.C.: National Archives and Records Administration, n.d.).
"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MN7M-B48 : 19 February 2021), David G Potter, Pleasant Valley, Washington, Maryland, United States; citing enumeration district ED 153, sheet 202D, NARA microfilm publication T9 (Washington, D.C.: National Archives and Records Administration, n.d.), FHL microfilm 1,254,516.
"Maryland County Marriages, 1658-1940," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:Q297-NLT6 : 17 March 2018), David G Potter and Elizabeth Olliver, 03 Mar 1838; citing Washington, Maryland, United States, clerk of the circuit court from various counties; FHL microfilm 14,643.
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