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Oscar Olson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Ransom-County, North Dakota
Our Model Tree links this Oscar Olson across the 1900, 1910, 1920, 1930 and 1940 US Censuses in Ransom-County, North Dakota (XGBoost, ~Confirmed), with identified parents Ingerine & Peter — first a head (b.~1883), then head of a 4-person household.
Age 57
b. ~1883
Male
Head
Born: North Dakota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Ransom-County, North Dakota |
| Surname | Olson |
| Given Name | Oscar P |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | North Dakota |
| 1935 Residence (City) | Shepherd Township |
| 1935 Residence (County) | Ransom |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | C-5 |
| 1935 Residence | Same place |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
| Occupation | Farmer |
| Township / Ward | Shepherd Township |
| Est. Birth Year | ~1883 |
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 Oscar | Age | Birth yr |
|---|---|---|---|---|
| Oscar Olson | Head | — | 57 | ~1883 |
| Clark Olson | Son | — | 19 | ~1921 |
| Luther Olson | Son | — | 16 | ~1924 |
| Olga Olson | Spouse | — | 49 | ~1891 |
Census Appearances
1900
Ransom, North …
Son, age 17
Ransom, North Dakota · implied b. ~1883 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olson |
| Given Name | Oscar |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Birth Month | Feb |
| Birth Year | 1883 |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1910
Ransom, North …
Son, age 27
Ransom, North Dakota · implied b. ~1883 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olson |
| Given Name | Oscar |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Working |
| Industry | Home Farm |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1920
Ransom, North …
Head, age 36
Ransom, North Dakota · implied b. ~1884 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olson |
| Given Name | Oscar P |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | North Dakota |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Farmer |
| Industry | General Farming |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1930
Ransom, North …
Head, age 47
Ransom, North Dakota · implied b. ~1883 — 23 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olson |
| Given Name | Oscar P |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | North Dakota |
| Age at First Marriage | 30 |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Farmer |
| Industry | Grain Stock |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Radio Set | R |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1940
Ransom-County, North …
Head, age 57
Ransom-County, North Dakota · implied b. ~1883 — 4 household members
| Surname | Olson |
| Given Name | Oscar P |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | North Dakota |
| 1935 Residence (City) | Shepherd Township |
| 1935 Residence (County) | Ransom |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | C-5 |
| 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 Oscar Olson across 5 US Census years (1900, 1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Ingerine Olson (~0.92 confidence) and father Peter Olson (~0.92 confidence) and mother Severena Olson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Ingerine Olson
b. ~1850
Source mother
● Household
· direct · ~0.92
Father
Peter Olson
b. ~1850
Source father
● Household
· direct · ~0.92
Mother
Severena Olson
b. ~1850
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Oscar Olson
Head · 1940 · age 57 · b. ~1883 · 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 — Ransom-County, North Dakota
Open full size
1940 US Federal Census — Ransom-County, North Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03010-00834)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Delbert Yulyck | Gulyck | 54 | Head | Farmer | North Dakota |
| 2 | Olga Yulyck | Gulyck | 45 | Wife | — | North Dakota |
| 3 | Delbert Jr Yulyck | Gulyck | 22 | Son | Farm Laborer | North Dakota |
| 4 | Lorraine Yulyck | Gulyck | 19 | Daughter | — | North Dakota |
| 5 | Frank Cincera | 51 | Head | Farmer | North Dakota |
| 6 | Rose Cincera | 41 | Wife | — | Wisconsin |
| 7 | Frances Cincera | 16 | Daughter | — | North Dakota |
| 8 | Rosemary Cincera | 9 | Daughter | — | North Dakota |
| 9 | John A Nelson | 56 | Head | Farmer | Wisconsin |
| 10 | Marie Nelson | 48 | Wife | — | North Dakota |
| 11 | Harris Nelson | 14 | Son | — | North Dakota |
| 12 | Arthur Sater | 34 | Head | Farmer | Wisconsin |
| 13 | Shirley Sater | 26 | Wife | — | North Dakota |
| 14 | Joyce Sater | 7 | Daughter | — | North Dakota |
| 15 | June Sater | 5 | Daughter | — | North Dakota |
| 16 | John Sater | 0 | Son | — | North Dakota |
| 17 | Fred Hoff | 38 | Head | Farmer | North Dakota |
| 18 | Effie Hoff | 41 | Wife | — | North Dakota |
| 19 | Wayne Hoff | 13 | Son | — | North Dakota |
| 20 | Audrey Hoff | 10 | Daughter | — | North Dakota |
| 21 | Charles Hieggucke | Hieggucki | 49 | Head | Farmer | Illinois |
| 22 | Hilma Hieggucke | Hieggucki | 44 | Wife | — | North Dakota |
| 23 | Charles Hieggucke | Hieggucki | 16 | Son | — | North Dakota |
| 24 | Phyllis Hieggucke | Hieggucki | 10 | Daughter | — | North Dakota |
| 25 | Fred Weisenhaus | 47 | Head | Farmer | Iowa |
| 26 | Laura Weisenhaus | 43 | Wife | — | South Dakota |
| 27 | Fay Weisenhaus | 12 | Daughter | — | North Dakota |
| 28 | John Weisenhaus | 56 | Head | Farm Laborer | Iowa |
| 29 | Oscar P Olson THIS PERSON | 57 | Head | Farmer | North Dakota |
| 30 | Olga Olson | 49 | Wife | — | North Dakota |
| 31 | Clark Olson | 19 | Son | Farm Laborer | North Dakota |
| 32 | Luther Olson | 16 | Son | — | North Dakota |
| 33 | Louise Wiesenhaus | 42 | Head | — | North Dakota |
| 34 | Lyle Wiesenhaus | 16 | Son | — | North Dakota |
| 35 | Lorraine Wiesenhaus | 12 | Daughter | — | North Dakota |
| 36 | Bernard Schultz | 30 | Hired Hand | Farm Laborer | North Dakota |
| 37 | Harold Koenecke | 35 | Head | Farmer | North Dakota |
| 38 | Esther Koenecke | 36 | Wife | Grade Teacher | North Dakota |
| 39 | Loretta Pfeifer | 27 | Lodger | Grade Teacher | North Dakota |
| 40 | Walter Joyce | 52 | Head | Farmer | Minnesota |
Pedigree Summary
Oscar
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)