"England and Wales Census, 1901," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:X9LX-N69 : 21 May 2019), Ethel M Connor in household of William Connor, Walton on the Hill, Liverpool, Lancashire, England, United Kingdom; from "1901 England, Scotland and Wales census," database and images, findmypast (http://www.findmypast.com : n.d.); citing Walton subdistrict, PRO RG 13, The National Archives, Kew, Surrey.
"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M22C-28H : accessed 23 July 2021), Ethel M Connor in household of William C Connor, Boston Ward 24, Suffolk, Massachusetts, United States; citing enumeration district (ED) ED 1637, sheet 20A, family 436, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 625; FHL microfilm 1,374,638.
"Massachusetts Marriages, 1841-1915," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:Q28J-J9S5 : 22 July 2021), Adolph H Rothenbucher and Ethel M Connor, 25 Jul 1917; citing Dorchester, Boston, Suffolk, Massachusetts, United States, State Archives, Boston; FHL microfilm 828,853.