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John Schmidt — 1940 US Census Record
Model Tree available1940 United States Federal Census · Jefferson-County, Kentucky
Our Model Tree links this John Schmidt across the 1920, 1930 and 1940 US Censuses in Jefferson-County, Kentucky (XGBoost, ~Confirmed), with identified parents Henry & Hallie — first a head (b.~1908), then head of a 4-person household.
Age 32
b. ~1908
Male
Head
Born: Kentucky
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Kentucky |
| Surname | Schmidt |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | Louisville City |
| Additional Details | |
| Occupation | Laborer |
| Industry | City Yard |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 819 |
| Highest Grade | 8 |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Occupation | Laborer |
| Township / Ward | Louisville City |
| Est. Birth Year | ~1908 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mary Schmidt | Daughter | — | 3 | ~1937 |
| Doris Schmidt | Daughter | — | 5 | ~1935 |
| John Schmidt | Head | — | 32 | ~1908 |
| Elsa Schmidt | Spouse | — | 31 | ~1909 |
Census Appearances
1920
Jefferson, Kentucky
Son, age 13
Jefferson, Kentucky · implied b. ~1907 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schmidt |
| Given Name | John E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1930
Jefferson, Kentucky
Son, age 23
Jefferson, Kentucky · implied b. ~1907 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schmidt |
| Given Name | John E |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Occupation | Worker |
| Industry | Wholesale Grocery |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Jefferson-County, Kentucky
Head, age 32
Jefferson-County, Kentucky · implied b. ~1908 — 4 household members
| Surname | Schmidt |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | Louisville City |
| Occupation | Laborer |
| Industry | City Yard |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 819 |
| Highest Grade | 8 |
| 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 Schmidt across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Henry Schmidt (~0.92 confidence) and mother Hallie Schmidt (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Henry Schmidt
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Hallie Schmidt
b. ~1885
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Schmidt
Head · 1940 · age 32 · b. ~1908 · Kentucky
★ You are viewing this record
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
32 people indexed on this census page (nara:1940:m-t0627-01375-00190)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Levi Durrett | 35 | Head | Cooper | Kentucky |
| 2 | Idel Durrett | 40 | Wife | — | Kentucky |
| 3 | Odel Durrett | 14 | Daughter | — | Kentucky |
| 4 | Leo Durrett | 12 | Son | — | Kentucky |
| 5 | Marie Durrett | 10 | Daughter | — | Kentucky |
| 6 | Lucille Durrett | 9 | Daughter | — | Kentucky |
| 7 | Aileen Durrett | 7 | Daughter | — | Kentucky |
| 8 | Leo Durrett | 4 | Son | — | Kentucky |
| 9 | Leonard Durrett | 21 | Nephew | Drilling | Kentucky |
| 10 | John Schmidt THIS PERSON | 32 | Head | Laborer | Kentucky |
| 11 | Elsa Schmidt | 31 | Wife | — | Kentucky |
| 12 | Doris Schmidt | 5 | Daughter | — | Kentucky |
| 13 | Mary Schmidt | 3 | Daughter | — | Kentucky |
| 14 | Joseph Hayley | 28 | Head | Truck Driver | Kentucky |
| 15 | Evelyn Hayley | 24 | Wife | — | Kentucky |
| 16 | Jacqueline Hayley | 5 | Daughter | — | Kentucky |
| 17 | Nell Hayley | 3 | Daughter | — | Kentucky |
| 18 | Edward Hayley | 1 | Son | — | Kentucky |
| 19 | Richard Schwartz | 24 | Head | Blender | Kentucky |
| 20 | Gladys Schwartz | 20 | Wife | — | Kentucky |
| 21 | Stanley Williams | 22 | Head | Laborer | Kentucky |
| 22 | Clara Williams | 24 | Wife | — | Kentucky |
| 23 | Richard Williams | 3 | Son | — | Kentucky |
| 24 | Imogene Williams | 1 | Daughter | — | Kentucky |
| 25 | Frank Putz | 57 | Head | Box Maker | Kentucky |
| 26 | Mary Putz | 63 | Wife | — | Kentucky |
| 27 | Herman Schuler | 24 | Head | Helper | Kentucky |
| 28 | Loretta Schuler | 20 | Wife | — | Kentucky |
| 29 | Gilbert Cook | 51 | Head | — | Kentucky |
| 30 | Willie Cook | 46 | Wife | — | Kentucky |
| 31 | Charles Osborn | 19 | Lodger | Laborer | Kentucky |
| 32 | Albert Cook | 10 | Son | — | Kentucky |
Pedigree Summary
John
Gen 1 · 2 parents
~0.92
Max depth 4 (1900–1950 window)
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)