"New York State Census, 1875," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:VNVJ-CR1 : 18 February 2021), Monroe Ireland in household of Elizabeth Ireland, Fishkill, Dutchess, New York, United States; citing p. 21, line 8, State Library, Albany; FHL microfilm 565,246.
"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MZZL-WMG : 19 February 2021), Monroe Ireland in household of Fowler Ireland, Matteawan, Dutchess, New York, United States.
"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MSXM-GWC : accessed 20 October 2021), Monrow Ireland, Fishkill Township Matteawan, Dutchess, New York, United States.
"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M59C-3Z1 : accessed 20 October 2021), Monroe Ireland, Cornwall, Orange, New York, United States.