JK
John Kaufman — 1940 US Census Record
Model Tree available1940 United States Federal Census · Marion-County, Indiana
Our Model Tree links this John Kaufman across the 1920, 1930 and 1940 US Censuses in Marion-County, Indiana (XGBoost, ~Confirmed), with identified parents John & Elsie — first a head (b.~1916), then head of a 3-person household.
Age 24
b. ~1916
Male
Head
Born: Indiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Indiana |
| Surname | Kaufman |
| Given Name | John E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Occupation | Core-Maker |
| Industry | Steel Motor Factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1000 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Core-Maker |
| Township / Ward | Indianapolis |
| Est. Birth Year | ~1916 |
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 |
|---|---|---|---|---|
| Jeanette Kaufman | Spouse | — | 22 | ~1918 |
| Anita Kaufman | Daughter | — | ~1940 | |
| John Kaufman | Head | — | 24 | ~1916 |
Census Appearances
1920
Marion, Indiana
Son, age 4
Marion, Indiana · implied b. ~1916 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kaufman |
| Given Name | John E |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | none |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Marion, Indiana
Son, age 14
Marion, Indiana · implied b. ~1916 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kaufman |
| Given Name | John E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Marion-County, Indiana
Head, age 24
Marion-County, Indiana · implied b. ~1916 — 3 household members
| Surname | Kaufman |
| Given Name | John E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Occupation | Core-Maker |
| Industry | Steel Motor Factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1000 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 Kaufman across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Kaufman (~0.92 confidence) and mother Elsie Kaufman (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Kaufman
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Elsie Kaufman
b. ~1893
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Kaufman
Head · 1940 · age 24 · b. ~1916 · Indiana
★ 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 — Marion-County, Indiana
Open full size
1940 US Federal Census — Marion-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01122-00616)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Omah | 40 | Wife | — | Indiana |
| 42 | Frederick B Boyd | 65 | Head | Historical Researcher | Indiana |
| 43 | Jessie E Boyd | 63 | Wife | — | Indiana |
| 44 | John E. Kaufman THIS PERSON | 24 | Head | Core-Maker | Indiana |
| 45 | Jeanette Kaufman | 22 | Wife | — | Indiana |
| 46 | Anita Kaufman | 0 | Daughter | — | Indiana |
| 47 | Garland Thompson | 29 | Head | Salesman | Indiana |
| 48 | Daisy Thompson | 28 | Wife | — | Indiana |
| 49 | Patricia Thompson | 7 | Daughter | — | Indiana |
| 50 | Lymond Osting | 41 | Head | Foreman | Indiana |
| 51 | Hazel Osting | 38 | Wife | — | Indiana |
| 52 | Richard Osting | 16 | Son | — | Indiana |
| 53 | Marylou Osting | 10 | Daughter | — | Indiana |
| 54 | Raymond Walton | 27 | Head | Route Salesman | Indiana |
| 55 | Elizabeth Walton | 24 | Wife | — | Indiana |
| 56 | Raymond Jr. Walton | 3 | Son | — | Indiana |
| 57 | Margaret Ochiltree | 53 | Head | New Worker | Indiana |
| 58 | Benjamin H. Gisler | 56 | Head | Supervisor Cost Clerk | Indiana |
| 59 | Anna M. Gisler | 57 | Wife | — | Indiana |
| 60 | Helen Gisler | 27 | Daughter | Trained Nurse | Indiana |
| 61 | Walter J. Stayton | 61 | Head | Nurse & Postal Clerk | Indiana |
| 62 | Jella Stayton | 56 | Wife | — | Indiana |
| 63 | Elizabeth Stayton | 25 | Daughter | Doctor'S Assistant | Indiana |
| 64 | Mary Bremer | 49 | Head | Cashier & Usher | Ohio |
| 65 | Norman Bremer | 22 | Son | Helper | Indiana |
| 66 | "Donald ""Ab""" Bremer | 18 | Son | Usher | Indiana |
| 67 | Walter Cain | 46 | Head | Proprietor | Kentucky |
| 68 | Lillian Cain | 40 | Wife | — | Indiana |
| 69 | Jo Ann Cain | 15 | Daughter | — | Indiana |
| 70 | Gerald Lewellen | 39 | Head | Stationary Engineer | Indiana |
| 71 | Hazel Lewellen | 47 | Wife | — | Indiana |
| 72 | James Lewellen | 18 | Son | Plumber'S Assistant | Indiana |
| 73 | Dolly M. Collier | 63 | Head | — | Indiana |
| 74 | Emma Halloway | 78 | Head | — | Indiana |
| 75 | William Finney | 22 | Head | Laborer | Indiana |
| 76 | Lois Finney | 18 | Wife | — | Indiana |
| 77 | George Bloss | 29 | Head | Automobile Mechanic | Indiana |
| 78 | Izetta Bloss | 27 | Wife | — | Indiana |
| 79 | Byron Bloss | 2 | Son | — | Indiana |
| 80 | Elizabeth Wines | 27 | Boarder | Checker | Indiana |
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)