Hello Dennis, Hope the following makes your day as you seem to have spent several years trying to find past your gt gndfather !
After a bit of searching I found your Adams family in the 1880 census as follows.. -=-=-========================== Name: James Adams Home in 1880: Salt Creek, Mason, Illinois Age: 63 Estimated birth year: abt 1817 Birthplace: Kentucky Relation to Head of Household: Self (Head) Spouse's name: Maria
=-=- Name: Maria Adams Home in 1880: Salt Creek, Mason, Illinois Age: 63 Estimated birth year: abt 1817 Birthplace: New Jersey acc to censusbut it's N.Y. Relation to Head of Household: Wife Spouse's name: James Father's birthplace: Connecticut Mother's birthplace: Connecticut
=-=-=-also listed in the same household= Name Age J. Adams 37 Annie Adams 35 +listed below are grandchildren of James & Maria. J. A. Adams13 J. H. Adams 12 M. E. Adams 10 T. J. Adams 8 W. T. Adams 6 A. J. Adams 4
-=-=-==- Here is your Adams in 1870=
Household Members: Name Age James Adams 52 Maria Adams 53 Joseph Harrison 24 Maria A Harrison 18 William White 16 =-=- Your gt gndparents John and ANNA were living next door. Name misspelt as Addams=
Name: John H Addams Birth Year: abt 1842 Age in 1870: 28 Birthplace: Illinois Home in 1870: Quiver, Mason, Illinois Race: White Gender: Male Value of real estate: View image Post Office: Topeka Household Members: Name Age John H Addams 28 Anna Addams 24 James A Addams 3 John H Addams 2 Mary E Addams 1/12 Susana McIntyre 19
-=-=-=-=-= Here is John in 1860=
Household= Name: John Adams Age in 1860: 16 Birth Year: abt 1844 Birthplace: Illinois Home in 1860: Township 22 Range 7, Mason, Illinois Gender: Male Post Office: Spring Lake
Household Members: Name Age James Adams 42 Ky. Maria Adams 43 NY John Adams 16Illinois Maria A Adams 10Illinois =--=-==-
And here is John in the 1850 census=
Name: John Adams Age: 7 Estimated birth year: abt 1843 Birth Place: Illinois Gender: Male Home in 1850 (City,County,State): Council Hill, Jo Daviess, Illinois Family Number: 113 Household Members: Name Age James Adams 32 b.Ky. Maria Adams 33 . N.Y. John Adams 7 . Illinois. Maria A Adams 1 . Illinois. -==-
Hope this helps.
P.S. Saved the census copies and can send as attach email if you would like to see original census forms.