Luc Dandurand was listed in the 1880 Census and he was widowed by that date.
Elizabeth Giroux was born in 1835 and lived in Mateno, Kankakee County, Illinois in 1870
Date: 28 OCT 1851
Place: Will Co., Illinois
↑ "United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MXV3-D2H : 15 September 2017), Luc Danderand, Bourbonnais, Kankakee, Illinois, United States; citing enumeration district ED 21, sheet 100C, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d.), roll 0219; FHL microfilm 1,254,219.