JH
John Hart — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Caldwell-County, Kentucky
Our Model Tree links this John Hart across the 1920, 1930 and 1940 US Censuses in Caldwell-County, Kentucky (XGBoost, ~Confirmed) — first a head (b.~1904), then head of a 6-person household.
Age 36
b. ~1904
Male
Head
Born: Kentucky
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Caldwell-County, Kentucky |
| Surname | Hart |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | Mag. Dist. #4 |
| 1935 Residence (County) | Caldwell |
| Additional Details | |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 70 |
| Income (1939) | 200 |
| Highest Grade | No 2 |
| 1935 Residence | Same place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Occupation | Laborer |
| Township / Ward | Mag Dist 4 |
| Est. Birth Year | ~1904 |
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 |
|---|---|---|---|---|
| Nettie Hart | Daughter | — | 12 | ~1928 |
| George Hart | Daughter | — | 9 | ~1931 |
| Barbara Hart | Daughter | — | 5 | ~1935 |
| John Hart | Head | — | 36 | ~1904 |
| John Hart | Son | — | 7 | ~1933 |
| Katie Hart | Spouse | — | 32 | ~1908 |
Census Appearances
1920
Caldwell, Kentucky
Other, age 17
Caldwell, Kentucky · implied b. ~1903 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hart |
| Given Name | John |
| Relationship to Head | brother-in-law |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Occupation | Farm Laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1930
Caldwell, Kentucky
Head, age 27
Caldwell, Kentucky · implied b. ~1903 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hart |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Kentucky |
| Age at First Marriage | 20 |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Veteran | No |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Caldwell-County, Kentucky
Head, age 36
Caldwell-County, Kentucky · implied b. ~1904 — 6 household members
| Surname | Hart |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | Mag. Dist. #4 |
| 1935 Residence (County) | Caldwell |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 70 |
| Income (1939) | 200 |
| Highest Grade | No 2 |
| 1935 Residence | Same place |
| 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 Hart across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Hart
Head · 1940 · age 36 · b. ~1904 · 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 — Caldwell-County, Kentucky
Open full size
1940 US Federal Census — Caldwell-County, Kentucky
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01287-00702)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ira Francis Hall | 13 | Daughter | — | Kentucky |
| 42 | Lowanda Hall | 7 | Daughter | — | Kentucky |
| 43 | Ira Hall | 17 | Son | Laborer | Kentucky |
| 44 | John Hart THIS PERSON | 36 | Head | Laborer | Kentucky |
| 45 | Katie Hart | 32 | Wife | — | Kentucky |
| 46 | Nettie Mae Hart | 12 | Daughter | — | Kentucky |
| 47 | George Evelyn Hart | 9 | Daughter | — | Kentucky |
| 48 | John Jr. Hart | 7 | Son | — | Kentucky |
| 49 | Barbara Ann Hart | 5 | Daughter | — | Kentucky |
| 50 | Herman Cox | 36 | Head | Laborer | Kentucky |
| 51 | Grace Cox | 28 | Wife | — | Kentucky |
| 52 | Mary Elizabeth Cox | 4 | Daughter | — | Kentucky |
| 53 | James Garner Cox | 5 | Son | — | Kentucky |
| 54 | Joyce Marie Cox | 2 | Daughter | — | Kentucky |
| 55 | Andrew Ladd | 33 | Head | Laborer | Kentucky |
| 56 | Louise Ladd | 20 | Wife | — | Kentucky |
| 57 | Betty Jean Ladd | 4 | Daughter | — | Kentucky |
| 58 | Billy Ladd | 2 | Son | — | Kentucky |
| 59 | Charles A. Ladd | 0 | Son | — | Kentucky |
| 60 | Robert Oliver | 63 | Head | Laborer | Kentucky |
| 61 | Deanie Oliver | 41 | Wife | — | Kentucky |
| 62 | Robert Young | 36 | Head | Maintenance | Kentucky |
| 63 | Eliza Young | 33 | Wife | — | Kentucky |
| 64 | Ladine Young | 12 | Daughter | — | Kentucky |
| 65 | Hayden Mitchell | 29 | Head | Laborer | Kentucky |
| 66 | Virginia Mitchell | 24 | Wife | — | Kentucky |
| 67 | Margaret Mitchell | 1 | Daughter | — | Kentucky |
| 68 | Clarence Blanc | 56 | Head | Laborer | Kentucky |
| 69 | Ozie Blanc | 55 | Wife | — | Kentucky |
| 70 | Alice Blanc | 17 | Daughter | — | Kentucky |
| 71 | Raymond Blanc | 14 | Son | — | Kentucky |
| 72 | Joan Blanc | 9 | Daughter | — | Kentucky |
| 73 | Lonnie Wynn | 23 | Head | Laborer | Kentucky |
| 74 | Pearl Wynn | 22 | Wife | — | Kentucky |
| 75 | Jerry Clinton Wynn | 4 | Son | — | Kentucky |
| 76 | Carl Nelson Wynn | 2 | Son | — | Kentucky |
| 77 | Bernice Rogers | 42 | Head | Laborer | Kentucky |
| 78 | Kitty Rogers | 47 | Wife | — | Kentucky |
| 79 | Ola Mae Rogers | 22 | Daughter | — | Kentucky |
| 80 | Ernestine Rogers | 15 | Daughter | — | 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)