KJ
Kenneth Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Warren-County, Illinois
Our Model Tree links this Kenneth Johnson across the 1920, 1930 and 1940 US Censuses in Warren-County, Illinois (XGBoost, ~Confirmed), with identified parents Arvid & Edith — first a son (b.~1917), then head of a 6-person household.
Age 23
b. ~1917
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Warren-County, Illinois |
| Surname | Johnson |
| Given Name | Kenneth |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Lenox |
| 1935 Residence (County) | Warren |
| Additional Details | |
| Occupation | Office work |
| Industry | Standard Oil |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 667 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Office Work |
| Township / Ward | Lenox |
| Est. Birth Year | ~1917 |
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 Kenneth | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Johnson | Daughter | — | 20 | ~1920 |
| Patricia Johnson | Daughter | — | 7 | ~1933 |
| Arvid Johnson | Head | — | 49 | ~1891 |
| James Johnson | Son | — | 14 | ~1926 |
| Kenneth Johnson | Son | — | 23 | ~1917 |
| Edith Johnson | Spouse | — | 44 | ~1896 |
Census Appearances
1920
Warren, Illinois
Son, age 2
Warren, Illinois · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Kenneth S. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Warren, Illinois
Son, age 12
Warren, Illinois · implied b. ~1918 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Kenneth |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Warren-County, Illinois
Son, age 23
Warren-County, Illinois · implied b. ~1917 — 6 household members
| Surname | Johnson |
| Given Name | Kenneth |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Lenox |
| 1935 Residence (County) | Warren |
| Occupation | Office work |
| Industry | Standard Oil |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 667 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| 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 Kenneth Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Arvid Johnson (~0.92 confidence) and mother Edith Johnson (~0.92 confidence) and mother Edith Johnson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Arvid Johnson
b. ~1891
Source father
● Household
· direct · ~0.92
Mother
Edith Johnson
b. ~1896
Source mother
● Household
· direct · ~0.92
Mother
Edith Johnson
b. ~1896
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Kenneth Johnson
Son · 1940 · age 23 · b. ~1917 · Illinois
★ You are viewing this record
Sibling
Patricia Johnson
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Johnson
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Johnson
Sibling · 1940 · age 14
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 — Warren-County, Illinois
Open full size
1940 US Federal Census — Warren-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00901-00164)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lillie Davis | 48 | Head | Storekeeper | Illinois |
| 42 | Emma Olson | 69 | Mother | — | Sweden |
| 43 | John S. Engdahl | 40 | Head | Farmer | Illinois |
| 44 | Ethel Engdahl | 40 | Wife | — | Illinois |
| 45 | Marian Engdahl | 16 | Daughter | — | Illinois |
| 46 | Charles E. Nugent | 35 | Head | Farmer | Illinois |
| 47 | Katherine Nugent | 33 | Wife | — | Illinois |
| 48 | Mary Jane Nugent | 1 | Daughter | — | Illinois |
| 49 | Harry W. K. Kallister | 59 | Head | Overseer | Illinois |
| 50 | Anna Kallister | 56 | Wife | — | Illinois |
| 51 | Arvid Johnson | 49 | Head | Farmer | Sweden |
| 52 | Edith Johnson | 44 | Wife | — | Illinois |
| 53 | Kenneth Johnson THIS PERSON | 23 | Son | Office Work | Illinois |
| 54 | Elizabeth Johnson | 20 | Daughter | Secretary | Illinois |
| 55 | James Johnson | 14 | Son | — | Illinois |
| 56 | Patricia Johnson | 7 | Daughter | — | Illinois |
| 57 | Clinton Kirby | 41 | Head | Farm Laborer | Illinois |
| 58 | Verna Kirby | 38 | Wife | — | Missouri |
| 59 | Clentine Kirby | 17 | Daughter | — | Illinois |
| 60 | Emalee Kirby | 15 | Daughter | — | Illinois |
| 61 | James Kirby | 6 | Son | — | Illinois |
| 62 | Charles Croft | 26 | Head | Farm Laborer | North Carolina |
| 63 | Catherine Croft | 26 | Wife | — | Iowa |
| 64 | Patricia Croft | 5 | Daughter | — | Iowa |
| 65 | Josephine Francis | 39 | Head | Farm Manager | Illinois |
| 66 | Agnes Francis | 37 | Sister | Teacher | Illinois |
| 67 | Hugh Francis | 30 | Brother | Farm Laborer | Illinois |
| 68 | Arthur Francis | 24 | Brother | Farm Laborer | Illinois |
| 69 | John Stocker | 79 | Uncle | — | England |
| 70 | Jesse Evans | 67 | Head | Farmer | Illinois |
| 71 | Maude Evans | 61 | Wife | — | Kansas |
| 72 | William Fort | 69 | Brother-in-law | — | Kansas |
| 73 | Leslie Clague | 47 | Head | Farmer | Illinois |
| 74 | Mary Jean Clague | 45 | Wife | — | Virginia |
| 75 | Henry Gordon | 52 | Head | Farmer | Illinois |
| 76 | Nelly Gordon | 57 | Wife | — | Illinois |
| 77 | Harry Robert Gordon | 17 | Son | — | Illinois |
| 78 | Ray E. Kettering | 55 | Head | Farmer | Nebraska |
| 79 | Marie Kettering | 57 | Wife | — | Illinois |
| 80 | Louise Kettering | 32 | Daughter | Teacher | Illinois |
Pedigree Summary
Kenneth + 3 siblings
Gen 1 · 3 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)