KJ
Kenneth Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cerro-Gordo-County, Iowa
Our Model Tree links this Kenneth Johnson across the 1920, 1930 and 1940 US Censuses in Cerro-Gordo-County, Iowa (XGBoost, ~Confirmed), with identified parents Amanda & Amanda — first a son (b.~1906), then head of a 3-person household.
Age 34
b. ~1906
Male
Son
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cerro-Gordo-County, Iowa |
| Surname | Johnson |
| Given Name | Kenneth |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Cerro Gordo |
| Additional Details | |
| Occupation | laborer |
| Industry | farm |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 400 |
| Highest Grade | 8 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Laborer |
| Township / Ward | Clear Lake City |
| Est. Birth Year | ~1906 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Kenneth | Age | Birth yr |
|---|---|---|---|---|
| Alvina Beck | Daughter | — | 9 | ~1931 |
| Amanda Johnson | Head | — | 60 | ~1880 |
| Kenneth Johnson | Son | — | 34 | ~1906 |
Census Appearances
1920
Worth, Iowa
Son, age 14
Worth, Iowa · implied b. ~1906 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Kenneth |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Farm Laborer |
| Industry | Home Farm |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Cerro Gordo, …
Son, age 24
Cerro Gordo, Iowa · implied b. ~1906 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Kenneth M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Cerro-Gordo-County, Iowa
Son, age 34
Cerro-Gordo-County, Iowa · implied b. ~1906 — 3 household members
| Surname | Johnson |
| Given Name | Kenneth |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Cerro Gordo |
| Occupation | laborer |
| Industry | farm |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 400 |
| Highest Grade | 8 |
| 1935 Residence | Iowa |
| 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 Kenneth Johnson across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: mother Amanda Johnson (~0.92 confidence) and mother Amanda Johnson (~0.92 confidence) and father Theodore Johnson (~0.92 confidence) and mother Mandy Johnson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Amanda Johnson
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Amanda Johnson
b. ~1880
Source mother
● Household
· direct · ~0.92
Father
Theodore Johnson
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Mandy Johnson
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Kenneth Johnson
Son · 1940 · age 34 · b. ~1906 · Iowa
★ You are viewing this record
Sibling
Alvina Beck
Sibling · 1940 · age 9
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 — Cerro-Gordo-County, Iowa
Open full size
1940 US Federal Census — Cerro-Gordo-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01146-00105)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James Gage | 29 | Head | Automobile Body Worker | Minnesota |
| 2 | Beverly Gage | 23 | Wife | — | Iowa |
| 3 | James Gage | 1 | Son | — | Iowa |
| 4 | Thomas Robinson | 31 | Head | Laborer | Kansas |
| 5 | Theresa Johnson | 26 | Head | — | Iowa |
| 6 | L. Rae Johnson | 3 | daughter | — | Iowa |
| 7 | Rose Mary Johnson | 1 | daughter | — | Iowa |
| 8 | Mary Johnson | 0 | daughter | — | Iowa |
| 9 | Frank Ertl | 66 | Head | Mason | Austria |
| 10 | Lena Ertl | 75 | wife | — | Austria |
| 11 | Albert Ertl | 35 | son | Tinner | Minnesota |
| 12 | Clara Ertl | 32 | daughter | Maid | Minnesota |
| 13 | Charles C. Huntley | 44 | Head | Farmer | Iowa |
| 14 | Ada E. Huntley | 43 | wife | — | Illinois |
| 15 | Charles Huntley | 13 | son | — | Iowa |
| 16 | Luise Nellie Huntley | 83 | mother | — | Illinois |
| 17 | William Shaffer | 33 | Head | Laborer | Iowa |
| 18 | Marcia Shaffer | 23 | wife | — | Iowa |
| 19 | Ada Q. Shaffer | 73 | Head | — | Wisconsin |
| 20 | Eagar A. Hill | 73 | Head | Laborer | Wisconsin |
| 21 | Frank Hanna | 27 | Head | Baker | Iowa |
| 22 | Blanche Hanna | 23 | wife | — | Iowa |
| 23 | Mary Hanna | 3 | daughter | — | Iowa |
| 24 | Roger Hanna | 2 | son | — | Iowa |
| 25 | James Amundson | 40 | Head | Salesman | Iowa |
| 26 | Doris Amundson | 34 | wife | — | Iowa |
| 27 | Ruth Amundson | 14 | daughter | — | Iowa |
| 28 | Donald Amundson | 10 | son | — | Iowa |
| 29 | Myrtle Riley | 59 | mother in law | — | Illinois |
| 30 | Howard M. Hansen | 37 | Head | Foreman | Iowa |
| 31 | Lena B. Hansen | 36 | wife | — | Iowa |
| 32 | Verna M. Hansen | 7 | daughter | — | Iowa |
| 33 | Merna Hansen | 5 | daughter | — | Iowa |
| 34 | Amanda Johnson | 60 | Head | — | Iowa |
| 35 | Kenneth Johnson THIS PERSON | 34 | son | Laborer | Iowa |
| 36 | Alvina Beck | 9 | daughter | — | Iowa |
| 37 | Mervin Aselund | 27 | Head | Laborer | Iowa |
| 38 | Cecil Aselund | 21 | wife | — | Montana |
| 39 | Robert Nichols | 30 | Head | Proprietor | Iowa |
| 40 | Irene Nichols | 26 | wife | — | Iowa |
Pedigree Summary
Kenneth + 1 sibling
Gen 1 · 4 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)