JK
John Kaufman — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Iberville-County, Louisiana
Our Model Tree links this John Kaufman across the 1930 and 1940 US Censuses in Iberville-County, Louisiana (XGBoost, ~Confirmed) — first a son (b.~1920), then head of a 8-person household.
Age 20
b. ~1920
Male
Son
Born: Louisiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Iberville-County, Louisiana |
| Surname | Kaufman |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Louisiana |
| 1935 Residence (City) | Ward 6 |
| 1935 Residence (County) | Iberville |
| Additional Details | |
| Occupation | Fisherman |
| Industry | Independent |
| Class of Worker | OA |
| Hours Worked | 30 |
| Income (1939) | 900 |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
| Occupation | Fisherman |
| Township / Ward | Ward 6 |
| Est. Birth Year | ~1920 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Edna Kaufman | Daughter | — | 15 | ~1925 |
| Rachel Kaufman | Spouse | — | 39 | ~1901 |
| Marian Kaufman | Son | — | 19 | ~1921 |
| John Kaufman | Head | — | 42 | ~1898 |
| David Kaufman | Son | — | 11 | ~1929 |
| John Kaufman | Son | — | 20 | ~1920 |
| Vivian Kaufman | Daughter | — | 9 | ~1931 |
| Lillian Kaufman | Daughter | — | 8 | ~1932 |
Census Appearances
1930
Iberville, Louisiana
Son, age 9
Iberville, Louisiana · implied b. ~1921 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kaufman |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Louisiana |
| Father's Birthplace | Louisiana |
| Mother's Birthplace | Louisiana |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
1940
Iberville-County, Louisiana
Son, age 20
Iberville-County, Louisiana · implied b. ~1920 — 8 household members
| Surname | Kaufman |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Louisiana |
| 1935 Residence (City) | Ward 6 |
| 1935 Residence (County) | Iberville |
| Occupation | Fisherman |
| Industry | Independent |
| Class of Worker | OA |
| Hours Worked | 30 |
| Income (1939) | 900 |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
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 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Kaufman
Son · 1940 · age 20 · b. ~1920 · Louisiana
★ You are viewing this record
Sibling
Vivian Kaufman
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lillian Kaufman
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David Kaufman
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edna Kaufman
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marian Kaufman
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Iberville-County, Louisiana
Open full size
1940 US Federal Census — Iberville-County, Louisiana
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01404-00544)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John A. Kaufman | 42 | Head | — | Louisiana |
| 2 | Rachel Kaufman | 39 | Wife | — | Louisiana |
| 3 | John Jr. Kaufman THIS PERSON | 20 | Son | Fisherman | Louisiana |
| 4 | Marian H. Kaufman | 19 | Son | Fisherman | Louisiana |
| 5 | Edna M. Kaufman | 15 | Daughter | — | Louisiana |
| 6 | David M. Kaufman | 11 | Son | — | Louisiana |
| 7 | Vivian L. Kaufman | 9 | Daughter | — | Louisiana |
| 8 | Lillian M. Kaufman | 8 | Daughter | — | Louisiana |
| 9 | Lee James | 36 | Head | Laborer | Louisiana |
| 10 | Ellen James | 34 | Wife | — | Louisiana |
| 11 | Lee Jr. James | 12 | Son | — | Louisiana |
| 12 | Mace James | 9 | Son | — | Louisiana |
| 13 | Walter James | 7 | Son | — | Louisiana |
| 14 | Leola James | 5 | Daughter | — | Louisiana |
| 15 | Clarence James | 3 | Son | — | Louisiana |
| 16 | Earl James | 2 | Son | — | Louisiana |
| 17 | Alton V. James | 1 | Son | — | Louisiana |
| 18 | Clarence Steward | 39 | Head | Farmer | Louisiana |
| 19 | Mary Steward | 37 | Wife | — | Louisiana |
| 20 | Louisa M. Steward | 11 | Daughter | — | Louisiana |
| 21 | Basil Butler | 79 | Head | Laborer | Louisiana |
| 22 | Susan Butler | 78 | Wife | — | Louisiana |
| 23 | Katherine Steward | 66 | Sister | — | Louisiana |
| 24 | John Steward | 24 | Nephew | Loader | Louisiana |
| 25 | David Steward | 20 | Nephew | Laborer | Louisiana |
| 26 | Willie Steward | 21 | Grand Nephew | Loader | Louisiana |
| 27 | James Pierce | 37 | Head | Laborer | Louisiana |
| 28 | Leola Pierce | 37 | Wife | — | Louisiana |
| 29 | James Jr. Pierce | 18 | Son | — | Louisiana |
| 30 | Lawrence Pierce | 16 | Son | New Worker | Louisiana |
| 31 | John Gibson | 57 | Head | Loader | Louisiana |
| 32 | Sarah Gibson | 45 | Wife | — | Louisiana |
| 33 | William E. Gibson | 25 | Son | New Worker | Louisiana |
| 34 | James H. Gibson | 14 | Son | — | Louisiana |
| 35 | Betty Jean Gibson | 7 | Daughter | — | Louisiana |
| 36 | Andrew Richardson | 75 | Head | — | Louisiana |
| 37 | Earnest Johnson | 54 | Head | — | Louisiana |
| 38 | Benny Young | 25 | Head | — | Louisiana |
| 39 | Charles Repp | 60 | Head | Proprietor | Louisiana |
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)