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Ole Olson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Traill-County, North Dakota
Our Model Tree links this Ole Olson across the 1920, 1930 and 1940 US Censuses in Traill-County, North Dakota (XGBoost, ~Confirmed), with identified parents Ole — first a head (b.~1899), then head of a 4-person household.
Age 41
b. ~1899
Male
Head
Born: North Dakota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Traill-County, North Dakota |
| Surname | Olson |
| Given Name | Ole L. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | North Dakota |
| 1935 Residence (City) | Belmont twp |
| 1935 Residence (County) | Traill |
| Additional Details | |
| Occupation | farmer |
| Industry | farm |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
| Occupation | Farmer |
| Township / Ward | Belmont Twp |
| Est. Birth Year | ~1899 |
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 |
|---|---|---|---|---|
| Gwendolyne Olson | Daughter | — | 5 | ~1935 |
| Viola Olson | Spouse | — | 29 | ~1911 |
| Ole Olson | Head | — | 41 | ~1899 |
| Roland Olson | Son | — | 3 | ~1937 |
Census Appearances
1920
Steele, North …
Son, age 22
Steele, North Dakota · implied b. ~1898 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olson |
| Given Name | Ole |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Laborer |
| Industry | Farm hand |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1930
Steele, North …
Head, age 32
Steele, North Dakota · implied b. ~1898 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olson |
| Given Name | Ole B. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | VVVV |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1940
Traill-County, North …
Head, age 41
Traill-County, North Dakota · implied b. ~1899 — 4 household members
| Surname | Olson |
| Given Name | Ole L. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | North Dakota |
| 1935 Residence (City) | Belmont twp |
| 1935 Residence (County) | Traill |
| Occupation | farmer |
| Industry | farm |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
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 Ole Olson (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Ole Olson
b. ~1866
Source father
● Household
· direct · ~0.92
This person
Anchor record
Ole Olson
Head · 1940 · age 41 · b. ~1899 · North Dakota
★ 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 — Traill-County, North Dakota
Open full size
1940 US Federal Census — Traill-County, North Dakota
Page Contents
33 people indexed on this census page (nara:1940:m-t0627-03016-00375)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Martin Tvedten | 58 | Head | Farmer | North Dakota |
| 2 | Betsy Tvedten | 58 | Wife | — | North Dakota |
| 3 | Oskar Tvedten | 32 | Son | Farmer | North Dakota |
| 4 | Halvor Hedde | 53 | Head | Farmer | Norway |
| 5 | Tilda Hedde | 54 | Wife | Farmer | North Dakota |
| 6 | Orvin Hedde | 25 | Son | Farmer | North Dakota |
| 7 | Georgina Knutson | 20 | Daughter | Housework | North Dakota |
| 8 | Ole L. Olson THIS PERSON | 41 | Head | Farmer | North Dakota |
| 9 | Viola Olson | 29 | Wife | — | North Dakota |
| 10 | Gwendolyne Olson | 5 | Daughter | — | North Dakota |
| 11 | Roland Olson | 3 | Son | — | North Dakota |
| 12 | Mancur Olson | 36 | Head | Farmer | North Dakota |
| 13 | Clara Olson | 33 | Wife | — | North Dakota |
| 14 | Mancur Jr. Olson | 8 | Son | — | North Dakota |
| 15 | Gaylord Olson | 6 | Son | — | North Dakota |
| 16 | Allan Olson | 5 | Son | — | North Dakota |
| 17 | Arlin Fuglestad | 20 | Hired hand | Laborer | North Dakota |
| 18 | Carl Knutson | 67 | Head | Farmer | Minnesota |
| 19 | Emma Knutson | 70 | Wife | — | North Dakota |
| 20 | Selma Knutson | 32 | Daughter | — | North Dakota |
| 21 | C. Sorum | 9 | Granddaughter | — | North Dakota |
| 22 | Clarence Moen | 30 | Hired hand | Laborer | North Dakota |
| 23 | Cliff Ingwaldson | 55 | Head | Farmer | North Dakota |
| 24 | Inga Ingwaldson | 40 | Wife | — | Minnesota |
| 25 | Ruth Ingwaldson | 17 | Daughter | — | North Dakota |
| 26 | Ardis Ingwaldson | 16 | Daughter | — | North Dakota |
| 27 | Sterling Ingwaldson | 14 | Son | — | North Dakota |
| 28 | Beverly Ingwaldson | 11 | Daughter | — | North Dakota |
| 29 | Wayne L. Ingwaldson | 1 | Son | — | North Dakota |
| 30 | Clifford Gunderson | 29 | Head | Farmer | North Dakota |
| 31 | Verna Gunderson | 25 | Wife | — | North Dakota |
| 32 | James Gunderson | 1 | Son | — | North Dakota |
| 33 | Tillie Overson | 74 | Head | — | Norway |
Pedigree Summary
Ole
Gen 1 · 1 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)