"New York State Census, 1855," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:K6QY-54Y : 13 March 2018), Lizzie Tweed in household of William M Tweed, E.D. 1, Ward 7, New York City, New York, New York, United States; citing p. , line #2, family #210, county clerk offices, New York; FHL microfilm 1,018,654.
"United States Census, 1860", database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MCQ1-5PP : 12 December 2017), Lizzie Tweed in entry for Julia A Bogardus, 1860. 'Student.' Also listed Josephine Tweed (1852) and Margaret A Tweed (1849).
"New York, New York City Marriage Records, 1829-1940," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:24ZT-Q2D : 10 February 2018), John Henry Maginnis and Lizzie C. Tweed, 03 Feb 1869; citing Marriage, Manhattan, New York, New York, United States, New York City Municipal Archives, New York; FHL microfilm 1,544,219.
Find a Grave, database and images (https://www.findagrave.com : accessed 05 February 2021), memorial page for Elizabeth Cornelison “Lizzie” Tweed Maginnis (19 Mar 1851–14 Jul 1921), Find A Grave: Memorial #120497058, citing Metairie Cemetery, New Orleans, Orleans Parish, Louisiana, USA ; Maintained by JOSEPH ROSE (contributor 47634309) .