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John Kaufman — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Madison-County, Ohio
Our Model Tree links this John Kaufman across the 1930 and 1940 US Censuses in Madison-County, Ohio (XGBoost, ~Confirmed) — first a son (b.~1919), then head of a 8-person household.
Age 21
b. ~1919
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Madison-County, Ohio |
| Surname | Kaufman |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Canaan Twp |
| 1935 Residence (County) | Madison |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Canaan Twp |
| Est. Birth Year | ~1919 |
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 |
|---|---|---|---|---|
| John Kaufman | Son | — | 21 | ~1919 |
| M Kaufman | Head | — | 69 | ~1871 |
| Mary Kaufman | Spouse | — | 53 | ~1887 |
| Simon Kaufman | Son | — | 37 | ~1903 |
| Minerva Kaufman | Daughter | — | 25 | ~1915 |
| Sarah Kaufman | Daughter | — | 28 | ~1912 |
| Palmer Kaufman | Son | — | 19 | ~1921 |
| Raymond Kaufman | Son | — | 17 | ~1923 |
Census Appearances
1930
Madison, Ohio
Son, age 11
Madison, Ohio · implied b. ~1919 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kauffman |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Madison-County, Ohio
Son, age 21
Madison-County, Ohio · implied b. ~1919 — 8 household members
| Surname | Kaufman |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Canaan Twp |
| 1935 Residence (County) | Madison |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 21 · b. ~1919 · Ohio
★ You are viewing this record
Sibling
Palmer Kaufman
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sarah Kaufman
Sibling · 1940 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Minerva Kaufman
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Simon Kaufman
Sibling · 1940 · age 37
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Kaufman
Sibling · 1940 · age 17
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 — Madison-County, Ohio
Open full size
1940 US Federal Census — Madison-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03107-00025)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Edna Fern Farmwald | 8 | daughter | — | Ohio |
| 2 | Dan H Ginger | 65 | head | — | Ohio |
| 3 | Mary Ginger | 63 | wife | — | Ohio |
| 4 | Eli Yoder | 54 | head | Farmer | Ohio |
| 5 | Enna Yoder | 53 | wife | — | Ohio |
| 6 | Henry Yoder | 17 | son | Farmer | Ohio |
| 7 | Levi Yoder | 16 | son | — | Ohio |
| 8 | Lizzie Yoder | 13 | daughter | — | Ohio |
| 9 | Katie Yoder | 12 | daughter | — | Ohio |
| 10 | John Yoder | 8 | son | — | Ohio |
| 11 | M. M. Kaufman | 69 | head | Farmer | Ohio |
| 12 | Mary Kaufman | 53 | wife | — | Ohio |
| 13 | Simon Kaufman | 37 | son | Farmer | Ohio |
| 14 | Sarah Kaufman | 28 | daughter | — | Ohio |
| 15 | Minerva Kaufman | 25 | daughter | — | Ohio |
| 16 | John Kaufman THIS PERSON | 21 | son | — | Ohio |
| 17 | Palmer Kaufman | 19 | son | — | Ohio |
| 18 | Raymond Kaufman | 17 | son | — | Ohio |
| 19 | J. P. Whitmer | 63 | head | Farmer | Ohio |
| 20 | Martha Whitmer | 57 | wife | — | Ohio |
| 21 | Pete Whitmer | 20 | son | — | Ohio |
| 22 | John Hostetler | 54 | head | Farmer | Ohio |
| 23 | Lydia Hostetler | 46 | wife | — | Ohio |
| 24 | Noah Hostetler | 16 | son | Farmer | Ohio |
| 25 | Dan Hostetler | 15 | son | Farmer | Ohio |
| 26 | Amanda Hostetler | 13 | daughter | — | Ohio |
| 27 | Verba Hostetler | 12 | daughter | — | Ohio |
| 28 | Lester Hostetler | 10 | son | — | Ohio |
| 29 | Mose Hostetler | 7 | son | — | Ohio |
| 30 | Ervin Hostetler | 5 | son | — | Ohio |
| 31 | Mrs Amanda Troyer | 72 | head | — | Ohio |
| 32 | Sarah Troyer | 34 | daughter | — | Ohio |
| 33 | Eli M Troyer | 44 | head | Farmer | Ohio |
| 34 | Malinda Troyer | 45 | wife | — | Ohio |
| 35 | Katie Troyer | 25 | daughter | — | Ohio |
| 36 | Elden Troyer | 20 | son | Farmer | Ohio |
| 37 | Ada Troyer | 14 | daughter | — | Ohio |
| 38 | Edna Troyer | 12 | daughter | — | Ohio |
| 39 | Sarah Troyer | 10 | daughter | — | Ohio |
| 40 | Sarah Schlabach | 87 | head | — | Ohio |
Related Census Records
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)