JH
John Hartman — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Jefferson-County, Kentucky
Our Model Tree links this John Hartman across the 1920, 1930 and 1940 US Censuses in Jefferson-County, Kentucky (XGBoost, ~Confirmed) — first a head (b.~1877), then head of a 3-person household.
Age 63
b. ~1877
Male
Head
Born: Kentucky
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Kentucky |
| Surname | Hartman |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 63 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | Magisterial Dist. 2 |
| 1935 Residence (County) | Jefferson |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | E |
| Hours Worked | 44 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Occupation | Farmer |
| Township / Ward | Magisterial Dist 2 |
| Est. Birth Year | ~1877 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Catherine Hartman | Daughter | — | 34 | ~1906 |
| John Hartman | Head | — | 63 | ~1877 |
| Clara Hartman | Spouse | — | 60 | ~1880 |
Census Appearances
1920
Jefferson, Kentucky
Head, age 43
Jefferson, Kentucky · implied b. ~1877 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hartman |
| Given Name | John J |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Kentucky |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Farmer |
| Industry | Truck Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1930
Jefferson, Kentucky
Head, age 52
Jefferson, Kentucky · implied b. ~1878 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hartman |
| Given Name | John J |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Kentucky |
| Age at First Marriage | 21 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Farmer |
| Industry | Truck farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Jefferson-County, Kentucky
Head, age 63
Jefferson-County, Kentucky · implied b. ~1877 — 3 household members
| Surname | Hartman |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 63 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | Magisterial Dist. 2 |
| 1935 Residence (County) | Jefferson |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | E |
| Hours Worked | 44 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 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 Hartman 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 Hartman
Head · 1940 · age 63 · b. ~1877 · 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 — Jefferson-County, Kentucky
Open full size
1940 US Federal Census — Jefferson-County, Kentucky
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01320-00788)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Benjamin Schafer | 52 | Head | Salesman | Illinois |
| 42 | Lydia Schafer | 48 | Wife | — | Illinois |
| 43 | William Ruff | 49 | Head | Proprietor | Kentucky |
| 44 | Lois Ruff | 45 | Wife | — | Kentucky |
| 45 | John Lewis | 34 | Head | Safety Manager | Ohio |
| 46 | Bessie Lewis | 33 | Wife | — | Pennsylvania |
| 47 | Dawn Marie Lewis | 2 | Daughter | — | New Jersey |
| 48 | Marjorie Delpau | 18 | Maid | Maid | Kentucky |
| 49 | H. Perry Kingsley | 43 | Head | Office Manager | Iowa |
| 50 | Maud Kingsley | 40 | Wife | — | Illinois |
| 51 | Margaret Jean Kingsley | 14 | Daughter | — | Indiana |
| 52 | William Jr. Kingsley | 7 | Son | — | Kentucky |
| 53 | Nell Hite | 64 | Aunt | — | Illinois |
| 54 | Nellie Lauhaus | 56 | Head | — | Indiana |
| 55 | Marjorie Lauhaus | 29 | Daughter | Bookkeeper | Kentucky |
| 56 | Ray B. Davis | 42 | Head | Clerk | Kentucky |
| 57 | Mary Lee Davis | 42 | Wife | — | Kentucky |
| 58 | Clifton Bottorff | 34 | Head | Proprietor | Kentucky |
| 59 | Mary E. Bottorff | 32 | Wife | — | Kentucky |
| 60 | Jacob Bottorff | 69 | Father | — | Kentucky |
| 61 | Eleanor Bottorff | 65 | Mother | — | Kentucky |
| 62 | Richard J. Bottorff | 27 | Brother | Salesman | Kentucky |
| 63 | Frank Erwine | 60 | Head | Cutter | Kentucky |
| 64 | Gertrude Erwine | 58 | Wife | — | Kentucky |
| 65 | Henry Allgeier | 22 | Son-in-law | Finisher | Kentucky |
| 66 | Lillian Allgeier | 21 | Daughter | — | Kentucky |
| 67 | John Hartman THIS PERSON | 63 | Head | Farmer | Kentucky |
| 68 | Clara Hartman | 60 | Wife | — | Kentucky |
| 69 | Catherine Hartman | 34 | Daughter | Clerk | Kentucky |
| 70 | Marcus Thernes | 63 | Head | Carpenter | Kentucky |
| 71 | Lula Belle Thernes | 53 | Wife | — | Kentucky |
| 72 | William D. Marton | 74 | Head | — | Kentucky |
| 73 | Dora Marton | 75 | Wife | — | Kentucky |
| 74 | William S. Dutcher | 43 | Head | Clerk | Kentucky |
| 75 | Anna Lee Dutcher | 33 | Wife | Stenographer | Kentucky |
| 76 | Sedley Mcgruder | 63 | Father-in-law | — | Kentucky |
| 77 | Mayme Mcgruder | 53 | Mother-in-law | — | Kentucky |
| 78 | Alice Johnston | 62 | Head | — | Kentucky |
| 79 | Robert Edward | 29 | Boarder | Radio Operator | Connecticut |
| 80 | Edwin H. Bornholz | 54 | Head | Life Insurance Agent | 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)