Any idea why father has different last name (marriage record says John Slater) or is that just a mistake? https://familysearch.org/ark:/61903/1:1:NQ3H-R5G
in the 1880 United States Federal Census
in the U.S., Social Security Applications and Claims Index, 1936-2007
There is a John Stone at Coldwater in 1880
"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MW9Y-CBS : 26 August 2017), John Stone in household of Charles Seigal, Coldwater, Branch, Michigan, United States; citing enumeration district ED 29, sheet 550B, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d.), roll 0573; FHL microfilm 1,254,573.
On other pages for Coldwater there is also Theodore Stone, aged about 8 and George Stone aged about 10