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Jack Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allen-County, Ohio
Our Model Tree links this Jack Johnson across the 1930 and 1940 US Censuses in Allen-County, Ohio (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 9-person household.
Age 17
b. ~1923
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allen-County, Ohio |
| Surname | Johnson |
| Given Name | Jack |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Lima City |
| 1935 Residence (County) | Allen |
| Additional Details | |
| Hours Worked | 8 |
| Income (1939) | 0 |
| Highest Grade | H-1 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Lima City |
| Est. Birth Year | ~1923 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Jack | Age | Birth yr |
|---|---|---|---|---|
| Genevieve Johnson | Daughter | — | 15 | ~1925 |
| Elizabeth Johnson | Daughter | — | 13 | ~1927 |
| Marie Johnson | Head | — | 42 | ~1898 |
| Duane Johnson | Son | — | 11 | ~1929 |
| Kenneth Johnson | Son | — | 10 | ~1930 |
| Nelson Johnson | Son | — | 5 | ~1935 |
| Harold Johnson | Son | — | 19 | ~1921 |
| Norman Johnson | Son | — | 7 | ~1933 |
| Jack Johnson | Son | — | 17 | ~1923 |
Census Appearances
1930
Allen, Ohio
Son, age 7
Allen, Ohio · implied b. ~1923 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Jack |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Allen-County, Ohio
Son, age 17
Allen-County, Ohio · implied b. ~1923 — 9 household members
| Surname | Johnson |
| Given Name | Jack |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Lima City |
| 1935 Residence (County) | Allen |
| Hours Worked | 8 |
| Income (1939) | 0 |
| Highest Grade | H-1 |
| 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 Jack Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Jack Johnson
Son · 1940 · age 17 · b. ~1923 · Ohio
★ You are viewing this record
Sibling
Norman Johnson
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Duane Johnson
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Genevieve Johnson
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kenneth Johnson
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Johnson
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harold Johnson
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nelson Johnson
Sibling · 1940 · age 5
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 — Allen-County, Ohio
Open full size
1940 US Federal Census — Allen-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03020-00625)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Bill Gilmore | 19 | Son | — | Ohio |
| 2 | Bob Gilmore | 16 | Son | — | Ohio |
| 3 | Ellen Gilmore | 15 | Daughter | — | Ohio |
| 4 | Carl Gilmore | 10 | Son | — | Ohio |
| 5 | Dorothy Gilmore | 8 | Daughter | — | Ohio |
| 6 | Pauline Gilmore | 6 | Daughter | — | Ohio |
| 7 | John R Carter | 42 | Head | Trucker | Ohio |
| 8 | Dorothy Carter | 41 | Wife | — | Ohio |
| 9 | Miriam Carter | 13 | Daughter | — | Ohio |
| 10 | Ileen Carter | 9 | Daughter | — | Ohio |
| 11 | Walter Fasig | 63 | Lodger | — | Ohio |
| 12 | Stuart Gaugh | 37 | Head | Fireman | Ohio |
| 13 | Anna Gaugh | 37 | Wife | — | Ohio |
| 14 | Richard Gaugh | 17 | Son | — | Ohio |
| 15 | Donald Gaugh | 15 | Son | — | Ohio |
| 16 | Jack Gaugh | 13 | Son | — | Ohio |
| 17 | Betty Gaugh | 10 | Daughter | — | Ohio |
| 18 | Clara Zimmerman | 53 | Head | — | Ohio |
| 19 | Clyde Wolf | 47 | Head | Truck Driver | Ohio |
| 20 | Bessie Wolf | 39 | Wife | — | Ohio |
| 21 | Jeanne Wolf | 8 | Daughter | — | Ohio |
| 22 | George Thomas | 44 | Head | Plasterer | Ohio |
| 23 | Opal Thomas | 35 | Wife | — | Ohio |
| 24 | Raymond Thomas | 27 | Son | Truck Driver | Ohio |
| 25 | Maxine Thomas | 20 | Daughter | — | Ohio |
| 26 | Gordon Thomas | 12 | Son | — | Ohio |
| 27 | Harold Borden | 31 | Head | Welder | Ohio |
| 28 | Ramona Borden | 23 | Wife | Cigar Maker | Ohio |
| 29 | Patricia Borden | 5 | Daughter | — | Ohio |
| 30 | Beverly Borden | 1 | Daughter | — | Ohio |
| 31 | Marie Johnson | 42 | Head | — | Ohio |
| 32 | Harold Johnson | 19 | Son | Wood Worker | Ohio |
| 33 | Jack Johnson THIS PERSON | 17 | Son | — | Ohio |
| 34 | Genevieve Johnson | 15 | Daughter | — | Ohio |
| 35 | Elizabeth Johnson | 13 | Daughter | — | Ohio |
| 36 | Duane Johnson | 11 | Son | — | Ohio |
| 37 | Kenneth Johnson | 10 | Son | — | Ohio |
| 38 | Norman Johnson | 7 | Son | — | Ohio |
| 39 | Nelson Johnson | 5 | Son | — | Ohio |
| 40 | Frank Hedges | 71 | Head | — | Ohio |
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)