OJ
Oscar Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Winnebago-County, Illinois
Our Model Tree links this Oscar Johnson across the 1920, 1930 and 1940 US Censuses in Winnebago-County, Illinois (XGBoost, ~Confirmed), with identified parents Nels & Pauline — first a head (b.~1893), then head of a 6-person household.
Age 47
b. ~1893
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Winnebago-County, Illinois |
| Surname | Johnson |
| Given Name | Oscar H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Village of Pecatonica |
| 1935 Residence (County) | Winnebago |
| Additional Details | |
| Occupation | Concert Master |
| Industry | WPA Music project |
| Class of Worker | GW |
| Hours Worked | 44 |
| Income (1939) | 630 |
| Highest Grade | H 3 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Concert Master |
| Township / Ward | Village Of Pecatonica |
| Est. Birth Year | ~1893 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Oscar | Age | Birth yr |
|---|---|---|---|---|
| Rose Johnson | Daughter | — | ~1940 | |
| Mary Johnson | Daughter | — | 12 | ~1928 |
| Oscar Johnson | Head | — | 47 | ~1893 |
| Clarice Johnson | Son | — | 9 | ~1931 |
| Walter Johnson | Son | — | 5 | ~1935 |
| Mary Johnson | Spouse | — | 37 | ~1903 |
Census Appearances
1920
Winnebago, Illinois
Son, age 27
Winnebago, Illinois · implied b. ~1893 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Oscar |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Machine Hand |
| Industry | Furniture Factory |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Winnebago, Illinois
Son, age 37
Winnebago, Illinois · implied b. ~1893 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Oscar E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Dentist |
| Industry | Dental Office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Winnebago-County, Illinois
Head, age 47
Winnebago-County, Illinois · implied b. ~1893 — 6 household members
| Surname | Johnson |
| Given Name | Oscar H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Village of Pecatonica |
| 1935 Residence (County) | Winnebago |
| Occupation | Concert Master |
| Industry | WPA Music project |
| Class of Worker | GW |
| Hours Worked | 44 |
| Income (1939) | 630 |
| Highest Grade | H 3 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Oscar Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Nels Johnson (~0.92 confidence) and mother Pauline Johnson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Nels Johnson
b. ~1845
Source father
● Household
· direct · ~0.92
Mother
Pauline Johnson
b. ~1866
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Oscar Johnson
Head · 1940 · age 47 · b. ~1893 · Illinois
★ 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 — Winnebago-County, Illinois
Open full size
1940 US Federal Census — Winnebago-County, Illinois
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-00912-00215)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Alice M. Lenton | 19 | Wife | — | Illinois |
| 42 | Extra Line Lenton | None | — | — | — |
| 44 | Emma O. Johnson | 75 | Head | — | Pennsylvania |
| 45 | Oscar H. Johnson THIS PERSON | 47 | Head | Concert Master | Illinois |
| 46 | Mary E. Johnson | 37 | Wife | — | Pennsylvania |
| 47 | Mary E. Johnson | 12 | Daughter | — | Illinois |
| 48 | Clarice J. Johnson | 9 | Son | — | Illinois |
| 49 | Walter R. Johnson | 5 | Son | — | Illinois |
| 50 | Rose A. Johnson | 0 | Daughter | — | Illinois |
| 51 | Joseph W. Kilithy | 25 | Head | Electro Plating | Illinois |
| 52 | Josephine J. Kilithy | 20 | Wife | — | Illinois |
| 53 | Shirley M. Kilithy | 2 | Daughter | — | Illinois |
| 54 | Jean S. Kilithy | 0 | Daughter | — | Illinois |
| 55 | William T. Weaver | 53 | Head | Labor | Illinois |
| 56 | William Allen | 63 | Head | — | Wisconsin |
| 57 | Margaret E. Allen | 63 | Wife | — | Iowa |
| 58 | Clarence Allen | 42 | Son | Truck Driver | Illinois |
| 59 | Elsie W. Allen | 11 | Grand-daughter | — | Illinois |
| 61 | George H. Jameson | 58 | Head | Farm Work | Nebraska |
| 62 | Sadie A. Jameson | 54 | Wife | — | Nebraska |
| 63 | Harvey J. Jameson | 15 | Son | — | N. Dakota |
| 64 | Floyd L. Jameson | 14 | Son | — | N. Dakota |
| 65 | Joe B. Klinger | 84 | Head | — | Germany |
| 66 | Lillian Wing | 75 | Head | — | Illinois |
| 67 | John T. Templin | 34 | Head | Machinist | Illinois |
| 68 | Alice A. Templin | 28 | Wife | — | Illinois |
| 69 | Marie Y. Templin | 4 | Daughter | — | Illinois |
| 70 | Dwayne J. Templin | 2 | Son | — | Illinois |
| 71 | Norman T. Templin | 1 | Son | — | Illinois |
| 72 | Delores A. Templin | 0 | Daughter | — | Illinois |
| 73 | Rose L. Minion | 65 | Head | — | Ohio |
| 74 | Benny R. Anderson | 75 | Head | — | Illinois |
| 75 | Joseph De Groote | 48 | Head | Sand Blast Operator | Illinois |
| 76 | Andrew De Groote | 47 | Brother | Maintenance Man | Illinois |
| 77 | Lewis De Groote | 41 | Brother | Labor | Illinois |
| 78 | Don L. De Groote | 16 | Nephew | — | Illinois |
| 79 | Leonard G. Weick | 65 | Brother-in-law | — | Illinois |
| 80 | Tessa M. Weick | 56 | Sister | — | Illinois |
Pedigree Summary
Oscar
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)