OJ
Oliver Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Winnebago-County, Iowa
Our Model Tree links this Oliver Johnson across the 1930 and 1940 US Censuses in Winnebago-County, Iowa (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 10-person household.
Age 17
b. ~1923
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Winnebago-County, Iowa |
| Surname | Johnson |
| Given Name | Oliver J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Center |
| 1935 Residence (County) | Winnebago |
| Additional Details | |
| Occupation | Farm Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 150 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farm Laborer |
| Township / Ward | Center |
| 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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Oliver | Age | Birth yr |
|---|---|---|---|---|
| Roger Johnson | Son | — | 8 | ~1932 |
| Arthur Johnson | Son | — | 20 | ~1920 |
| Wifford Johnson | Head | — | 44 | ~1896 |
| Wilma Johnson | Daughter | — | 15 | ~1925 |
| Oliver Johnson | Son | — | 17 | ~1923 |
| Raymond Johnson | Son | — | 10 | ~1930 |
| Anna Johnson | Spouse | — | 40 | ~1900 |
| Helen Johnson | Daughter | — | 13 | ~1927 |
| Dwayne Johnson | Son | — | 2 | ~1938 |
| Evelyn Johnson | Daughter | — | 18 | ~1922 |
Census Appearances
1930
Winnebago, Iowa
Son, age 7
Winnebago, Iowa · implied b. ~1923 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Oliver J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Winnebago-County, Iowa
Son, age 17
Winnebago-County, Iowa · implied b. ~1923 — 10 household members
| Surname | Johnson |
| Given Name | Oliver J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Center |
| 1935 Residence (County) | Winnebago |
| Occupation | Farm Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 150 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Oliver Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Oliver Johnson
Son · 1940 · age 17 · b. ~1923 · Iowa
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Sibling
Wilma Johnson
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Roger Johnson
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dwayne Johnson
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Johnson
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Johnson
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Evelyn Johnson
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arthur Johnson
Sibling · 1940 · age 20
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 — Winnebago-County, Iowa
Open full size
1940 US Federal Census — Winnebago-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01213-00105)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Sidney M. Kvale | 6 | Son | — | Iowa |
| 42 | Jean A. Kvale | 3 | Daughter | — | Iowa |
| 43 | Thomas H. Lovik | 45 | Head | Farmer | Iowa |
| 44 | Hazel R. Lovik | 41 | Wife | — | Iowa |
| 45 | Vern L. Lovik | 18 | Son | Farm Laborer | Iowa |
| 46 | Eldon R. Lovik | 14 | Son | — | Iowa |
| 47 | Marlene D. Lovik | 4 | Daughter | — | Iowa |
| 48 | Harlan J. Lovik | 2 | Son | — | Iowa |
| 49 | Holver E. Brue | 72 | Lodger | — | Norway |
| 50 | John E. Brausted | 23 | Head | Farmer | Iowa |
| 51 | Anna B. Brausted | 18 | Wife | — | Iowa |
| 52 | Marilyn J. Brausted | 0 | Daughter | — | Iowa |
| 53 | Rachel E. Brausted | 53 | Mother | — | Iowa |
| 54 | Carl P. Johnson | 71 | Head | Farmer | Wisconsin |
| 55 | Christena O. Johnson | 44 | Wife | — | Iowa |
| 56 | Wifford O. Johnson | 44 | Head | Farm Laborer | Iowa |
| 57 | Anna J. Johnson | 40 | Wife | — | Iowa |
| 58 | Arthur D. Johnson | 20 | Son | Farm Laborer | Iowa |
| 59 | Evelyn M. Johnson | 18 | Daughter | Housekeeper | Iowa |
| 60 | Oliver J. Johnson THIS PERSON | 17 | Son | Farm Laborer | Iowa |
| 61 | Wilma E. Johnson | 15 | Daughter | — | Iowa |
| 62 | Helen E. Johnson | 13 | Daughter | — | Iowa |
| 63 | Raymond G. Johnson | 10 | Son | — | Iowa |
| 64 | Roger D. Johnson | 8 | Son | — | Iowa |
| 65 | Dwayne L. Johnson | 2 | Son | — | Iowa |
| 66 | Herman J. Jordahl | 32 | Head | Farmer | Wisconsin |
| 67 | Alice O. Jordahl | 36 | Wife | — | Iowa |
| 68 | Marjorie A. Jordahl | 4 | Daughter | — | Iowa |
| 69 | Donald H. Jordahl | 3 | Son | — | Iowa |
| 70 | Larry L. Jordahl | 1 | Son | — | Iowa |
| 71 | Edward Brausted | 64 | Head | Farmer | Iowa |
| 72 | Iver B. Brausted | 29 | Son | Farm Laborer | Iowa |
| 73 | Bernice S. Brausted | 21 | Daughter | — | Iowa |
| 74 | Iver D. Brausted | 8 | Grandson | — | Iowa |
| 75 | Charlotte J. Brausted | 5 | Granddaughter | — | Iowa |
| 76 | Virginia L. Brausted | 2 | Granddaughter | — | Iowa |
| 77 | Mary E. Ash | 17 | Maid | Housekeeper | Iowa |
| 78 | Gilman B. Dahl | 27 | Head | Farmer | Iowa |
| 79 | Evelyn V. Dahl | 26 | Wife | — | Iowa |
| 80 | Deloris G. Dahl | 5 | Daughter | — | Iowa |
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)