"United States Census, 1850," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MCB5-PLG], Mary Gunn in household of Hezekiah Gunn, Elbridge, Onondaga, New York, United States; citing family 299, NARA microfilm publication M432 (Washington, D.C.: National Archives and Records
FamilySearch [1], Elizebeth Gunn in household of H Gunn, E.D. 2, Elbridge, Onondaga, New York, United States; citing p. 15, line #40, family #140, county clerk offices, New York; FHL microfilm 870,755.
FamilySearch [2], Isaac R Gunn, The Village Of Jordan, Onondaga, New York, United States; citing "1860 U.S. Federal Census - Population," Fold3.com; p. 88, household ID 709, NARA microfilm publication M653; FHL microfilm 803828. Uncle Isaac is head of household in 1860.
FamilySearch [4], Mary E Gunn in household of Hezekiah Gunn, Elbridge, Onondaga, New York, United States; citing p. 38, line 44, State Library, Albany; FHL microfilm 860,901.