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Ole Olson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Worth-County, Iowa
Our Model Tree links this Ole Olson across the 1920, 1930 and 1940 US Censuses in Worth-County, Iowa (XGBoost, ~Confirmed), with identified parents George & Ida — first a son (b.~1915), then head of a 4-person household.
Age 25
b. ~1915
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Worth-County, Iowa |
| Surname | Olson |
| Given Name | Ole |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Fertile Township |
| 1935 Residence (County) | Worth |
| Additional Details | |
| Occupation | farm operator |
| Industry | farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farm Operator |
| Township / Ward | Fertile Township |
| Est. Birth Year | ~1915 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ole | Age | Birth yr |
|---|---|---|---|---|
| Ole Olson | Son | — | 25 | ~1915 |
| Ole Hoveland | Other | — | 50 | ~1890 |
| George Olson | Head | — | 72 | ~1868 |
| Ida Olson | Spouse | — | 65 | ~1875 |
Census Appearances
1920
Worth, Iowa
Son, age 5
Worth, Iowa · implied b. ~1915 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olson |
| Given Name | Ole |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Norway |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Worth, Iowa
Son, age 15
Worth, Iowa · implied b. ~1915 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olsen |
| Given Name | Ole |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Norway |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Worth-County, Iowa
Son, age 25
Worth-County, Iowa · implied b. ~1915 — 4 household members
| Surname | Olson |
| Given Name | Ole |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Fertile Township |
| 1935 Residence (County) | Worth |
| Occupation | farm operator |
| Industry | farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| 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 Ole Olson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father George Olson (~0.92 confidence) and mother Ida Olson (~0.92 confidence) and mother Ida Olson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
George Olson
b. ~1868
Source father
● Household
· direct · ~0.92
Mother
Ida Olson
b. ~1875
Source mother
● Household
· direct · ~0.92
Mother
Ida Olson
b. ~1875
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ole Olson
Son · 1940 · age 25 · b. ~1915 · Iowa
★ 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 — Worth-County, Iowa
Open full size
1940 US Federal Census — Worth-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01217-00131)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Emil Brunsvold | 50 | Head | Farm Operator | Iowa |
| 2 | Sven Hanson | 27 | Hired man | Farm Laborer | Iowa |
| 3 | Evanel Hanson | 28 | Hired man's wife | Housekeeper | Iowa |
| 4 | Marilyn Hanson | 12 | Hired man's dau | — | Iowa |
| 5 | George Olson | 72 | Head | — | Norway |
| 6 | Ida Olson | 65 | Wife | — | Iowa |
| 7 | Ole Olson THIS PERSON | 25 | Son | Farm Operator | Iowa |
| 8 | Ole Hoveland | 50 | Hired man | Farm Laborer | Iowa |
| 9 | Walter Bergland | 40 | Head | Farm Operator | Iowa |
| 10 | Rachel Bergland | 46 | Wife | — | Iowa |
| 11 | Wallace Bergland | 14 | Son | — | Iowa |
| 12 | Betty Bergland | 10 | Daughter | — | Iowa |
| 13 | Ruth Bergland | 2 | Daughter | — | Iowa |
| 14 | Rachel Bergland | 2 | Daughter | — | Iowa |
| 15 | Albert Mostrom | 54 | Head | Farm Operator | Iowa |
| 16 | Lydia Mostrom | 38 | Wife | — | Arkansas |
| 17 | Bobby M. Mostrom | 15 | Daughter | — | Alabama |
| 18 | Theodore Brunsvold | 60 | Head | Farm Operator | Iowa |
| 19 | Christine Brunsvold | 47 | Wife | — | Minnesota |
| 20 | Beverly Brunsvold | 11 | Daughter | — | Iowa |
| 21 | Ralph Brunsvold | 9 | Son | — | Iowa |
| 22 | Hugo Brunsvold | 62 | Head | Farm Operator | Iowa |
| 23 | Emma Brunsvold | 57 | Wife | — | Minnesota |
| 24 | Arnold Brunsvold | 18 | Son | Farm Laborer | Iowa |
| 25 | Henry Kittelson | 69 | Head | Farm Operator | Wisconsin |
| 26 | Mamie Kittelson | 54 | Wife | — | Iowa |
| 27 | Orin Kittelson | 28 | Son | Farm Operator | Iowa |
| 28 | John Kittelson | 14 | Son | — | Iowa |
| 29 | Dwayne Dalbey | 19 | Head | Farm Operator | Iowa |
| 30 | Donald Sharp | 18 | Hired man | Farm Laborer | Iowa |
| 31 | Christina Olson | 41 | Head | Farm Operator | Nebraska |
| 32 | Enid Olson | 17 | Daughter | — | Iowa |
| 33 | James Mikkelson | 20 | Hired man | Farm Laborer | Iowa |
| 34 | Spencer Anderson | 20 | Hired man | Farm Laborer | Iowa |
| 35 | Theo Rollefson | 52 | Head | Farm Operator | Iowa |
| 36 | Eva Rollefson | 46 | Wife | — | Wisconsin |
| 37 | Virginia Olson | 17 | Stepdaughter | — | Iowa |
| 38 | Carmen Olson | 13 | Stepdaughter | — | Iowa |
| 39 | Paul Dalby | 49 | Head | Farm Manager | Wisconsin |
| 40 | Clara Dalby | 49 | Wife | — | Iowa |
Related Census Records
Pedigree Summary
Ole
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)