They immigrated to the United States in 1837. They first went to Erie, Pennsylvania. In 1839 he was employed to survey the newly formed counties of Ogle, Lee, DeKalb and Whiteside.
↑ "Ireland, Diocesan and Prerogative Marriage License Bonds Indexes, 1623-1866", database, FamilySearch (https://familysearch.org/ark:/61903/1:1:WG7G-9V2M : 3 December 2019), Duncan Ferguson in entry for Agnes M Hopes, 1829.
↑ "United States Census, 1840," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:XHBV-ZDS : 2 March 2021), Duncam Ferguson, United States; citing p. 429, NARA microfilm publication , (Washington D.C.: National Archives and Records Administration, n.d.), roll ; FHL microfilm .
↑
"United States Census, 1850," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:M854-R4C : 19 December 2020), Duncan Furguson, Rockford, Winnebago, Illinois, United States; citing family , NARA microfilm publication (Washington, D.C.: National Archives and Records Administration, n.d.).
↑ On 14 July 1860 Scottish born Duncan Ferguson (53) Land Agent, Irish born wife Agnes M Ferguson (51) with Irish born son William G Ferguson (29) Book Keeper, NY born daughter-in-law Leah Ferguson (26), Irish born son Duncan H Ferguson (23) Clerk, Illinois born children Mary Ferguson (16), Charles Ferguson (13), Emma Ferguson (9) as well as grandchildren Lillie Ferguson (3) and Agnes Ferguson (4/12) with married daughter Lillie J Bartlett (20) and son-in-law Theodore Bartlett (25) Merchant, lived in Rockford, Winnebago, Illinois. "United States Census, 1860", database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MXHG-LMR : 18 February 2021), Duncan Fergurson, 1860.
↑ "Illinois, County Marriages, 1810-1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QK9L-5T62 : 19 February 2021), Duncan Ferguson and Mary Spellman, 10 Sep 1867; citing Winnebago, Illinois, United States, county offices, Illinois; FHL microfilm 1,914,066.
↑ "United States Census, 1880," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MX23-XW6 : 13 January 2022), Bert Spellman in household of Duncan Ferguson, Rockford, Winnebago, Illinois, United States; citing enumeration district , sheet , NARA microfilm publication T9 (Washington, D.C.: National Archives and Records Administration, n.d.), FHL microfilm .
↑ Daily Register (Rockford, IL) 15 May 1882, page 3. GenealogyBank: accessed 11 February 2022
See also:
Find A Grave: Memorial #127203949: accessed 11 February 2022), memorial page for Duncan Ferguson (15 Nov 1809–14 May 1882), citing Greenwood Cemetery, Rockford, Winnebago County, Illinois, USA ; Maintained by Dale Andrew Wishop (contributor 48032786) .
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