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John Decker — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Grayson-County, Kentucky
Our Model Tree links this John Decker across the 1920, 1930 and 1940 US Censuses in Grayson-County, Kentucky (XGBoost, ~Confirmed) — first a head (b.~1871), then head of a 6-person household.
Age 69
b. ~1871
Male
Head
Born: Kentucky
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Grayson-County, Kentucky |
| Surname | Decker |
| Given Name | John G. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 69 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Grayson |
| Additional Details | |
| Occupation | Old age Pensioner |
| Class of Worker | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Kentucky |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Occupation | Old Age Pensioner |
| Township / Ward | Magist D No 1 |
| Est. Birth Year | ~1871 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Decker | Head | — | 69 | ~1871 |
| Raymond Decker | Son | — | 22 | ~1918 |
| Clarence Decker | Son | — | 32 | ~1908 |
| Altha Decker | Daughter | — | 21 | ~1919 |
| Harmon Decker | Son | — | 24 | ~1916 |
| Alice Decker | Spouse | — | 64 | ~1876 |
Census Appearances
1920
Grayson, Kentucky
Head, age 44
Grayson, Kentucky · implied b. ~1876 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Decker |
| Given Name | John Riley |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Occupation | Farmer |
| Industry | General farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | M |
| Birth State | Kentucky |
| Birth Country | United States |
| Year of Naturalization | O |
| Birthplace (normalized) | kentucky |
1930
Grayson, Kentucky
Head, age 54
Grayson, Kentucky · implied b. ~1876 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Decker |
| Given Name | John R |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Kentucky |
| Age at First Marriage | 20 |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | O |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Grayson-County, Kentucky
Head, age 69
Grayson-County, Kentucky · implied b. ~1871 — 6 household members
| Surname | Decker |
| Given Name | John G. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 69 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Grayson |
| Occupation | Old age Pensioner |
| Class of Worker | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Kentucky |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links John Decker across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Decker
Head · 1940 · age 69 · b. ~1871 · Kentucky
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Grayson-County, Kentucky
Open full size
1940 US Federal Census — Grayson-County, Kentucky
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01310-00099)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary Q. Higdon | 13 | Daughter | — | Kentucky |
| 42 | Mary O. Buckles | 69 | Head | — | Kentucky |
| 43 | Mary T. Mudd | 35 | Daughter | — | Kentucky |
| 44 | Edward Blanton | 21 | Head | Farmer | Kentucky |
| 45 | Lillian Blanton | 19 | Wife | — | Kentucky |
| 46 | Oliver Grant | 42 | Head | Farmer | Kentucky |
| 47 | Winnie Grant | 40 | Wife | — | Kentucky |
| 48 | Glen Grant | 18 | Son | — | Kentucky |
| 49 | Bernard Grant | 14 | Son | — | Kentucky |
| 50 | Edwina Grant | 12 | Daughter | — | Kentucky |
| 51 | Wanetta Grant | 11 | Daughter | — | Kentucky |
| 52 | Catherine Grant | 9 | Daughter | — | Kentucky |
| 53 | Russell Grant | 6 | Son | — | Kentucky |
| 54 | Carlous Grant | 3 | Son | — | Kentucky |
| 55 | Lois Grant | 1 | Daughter | — | Kentucky |
| 56 | George Grant | 59 | Head | Farmer | Kentucky |
| 57 | Ena Grant | 43 | Wife | — | Kentucky |
| 58 | Omial Grant | 21 | Son | Laborer | Kentucky |
| 59 | Lenora Grant | 20 | Daughter | — | Kentucky |
| 60 | Ada Grant | 12 | Daughter | — | Kentucky |
| 61 | Lon Grant | 10 | Daughter | — | Kentucky |
| 62 | Laymon Grant | 14 | Son | — | Kentucky |
| 63 | Vangeline Grant | 11 | Daughter | — | Kentucky |
| 64 | Lorraine Grant | 8 | Son | — | Kentucky |
| 65 | John G. Decker THIS PERSON | 69 | Head | Old Age Pensioner | Kentucky |
| 66 | Alice Decker | 64 | Wife | — | Kentucky |
| 67 | Clarence Decker | 32 | Son | Farmer | Kentucky |
| 68 | Harmon Decker | 24 | Son | Farmer | Kentucky |
| 69 | Raymond Decker | 22 | Son | Farm | Kentucky |
| 70 | Altha Decker | 21 | Daughter | — | Kentucky |
| 71 | Claudius Haydon | 24 | Head | Farmer | Kentucky |
| 72 | Norma Haydon | 24 | Wife | — | Kentucky |
| 73 | L. T. Haydon | 2 | Son | — | Kentucky |
| 74 | James Pierce | 57 | Head | Farmer | Kentucky |
| 75 | Maggie Pierce | 52 | Wife | — | Kentucky |
| 76 | Joseph Pierce | 26 | Son | Laborer | Kentucky |
| 77 | Leonard Pierce | 16 | Son | — | Kentucky |
| 78 | Louise Pierce | 14 | Daughter | — | Kentucky |
| 79 | Wilbur Pierce | 12 | Son | — | Kentucky |
| 80 | Edward Pierce | 9 | Son | — | Kentucky |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)