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Oscar Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Mckenzie-County, North Dakota
Our Model Tree links this Oscar Peterson across the 1920, 1930 and 1940 US Censuses in Mckenzie-County, North Dakota (XGBoost, ~Confirmed), with identified parents Nels & Johanna — first a son (b.~1916), then head of a 6-person household.
Age 24
b. ~1916
Male
Son
Born: North Dakota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Mckenzie-County, North Dakota |
| Surname | Peterson |
| Given Name | Oscar |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | North Dakota |
| 1935 Residence (City) | Wilbur Twp |
| 1935 Residence (County) | McKenzie |
| Additional Details | |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
| Occupation | Laborer |
| Township / Ward | Wilbur Twp |
| Est. Birth Year | ~1916 |
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 Oscar | Age | Birth yr |
|---|---|---|---|---|
| Marie Peterson | Daughter | — | 15 | ~1925 |
| Johanna Peterson | Head | — | 52 | ~1888 |
| Anna Peterson | Other | — | 22 | ~1918 |
| Larry Peterson | Other | — | 2 | ~1938 |
| Oscar Peterson | Son | — | 24 | ~1916 |
| Oliver Peterson | Son | — | 18 | ~1922 |
Census Appearances
1920
Mckenzie, North …
Son, age 4
Mckenzie, North Dakota · implied b. ~1916 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Oscar |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | South Dakota |
| Mother's Birthplace | Minnesota |
| Occupation | none |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1930
Mckenzie, North …
Son, age 14
Mckenzie, North Dakota · implied b. ~1916 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Oscar O. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | South Dakota |
| Mother's Birthplace | Minnesota |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1940
Mckenzie-County, North …
Son, age 24
Mckenzie-County, North Dakota · implied b. ~1916 — 6 household members
| Surname | Peterson |
| Given Name | Oscar |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | North Dakota |
| 1935 Residence (City) | Wilbur Twp |
| 1935 Residence (County) | McKenzie |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 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 Peterson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Nels Peterson (~0.92 confidence) and mother Johanna Peterson (~0.92 confidence) and mother Johana Peterson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Nels Peterson
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Johanna Peterson
b. ~1888
Source mother
● Household
· direct · ~0.92
Mother
Johana Peterson
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Oscar Peterson
Son · 1940 · age 24 · b. ~1916 · North Dakota
★ You are viewing this record
Sibling
Marie Peterson
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Oliver Peterson
Sibling · 1940 · age 18
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 — Mckenzie-County, North Dakota
Open full size
1940 US Federal Census — Mckenzie-County, North Dakota
Page Contents
32 people indexed on this census page (nara:1940:m-t0627-03006-00237)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Susie Keller | 46 | wife | — | Germany |
| 42 | Clara Keller | 11 | daughter | — | North Dakota |
| 43 | Edna Keller | 10 | daughter | — | North Dakota |
| 44 | Glenn Keller | 7 | son | — | North Dakota |
| 45 | Harry Fossum | 38 | head | Farmer | Minnesota |
| 46 | Laura D. Fossum | 37 | wife | — | North Dakota |
| 47 | Verda Fossum | 3 | daughter | 0 | North Dakota |
| 48 | Verlin Fossum | 2 | son | 0 | North Dakota |
| 49 | Gust A. Fossum | 63 | head | Farmer | Norway |
| 50 | Marie Fossum | 67 | wife | — | Minnesota |
| 51 | Ethel Fossum | 32 | daughter | — | Minnesota |
| 52 | Frank D. Browning | 26 | head | Ditch Rider | North Dakota |
| 53 | Aris Browning | 19 | wife | — | Minnesota |
| 54 | Franklin Browning | 2 | son | 0 | North Dakota |
| 55 | Robert Browning | 28 | head | Farmer | Tennessee |
| 56 | John O. Samstad | 61 | head | Farmer | Minnesota |
| 57 | Paul Paulson | 66 | head | Farmer | Minnesota |
| 58 | Johanna D. Peterson | 52 | head | Farmer | Minnesota |
| 59 | Oliver Peterson | 18 | son | Laborer | North Dakota |
| 60 | Marie Peterson | 15 | daughter | — | North Dakota |
| 61 | Oscar Peterson THIS PERSON | 24 | son | Laborer | North Dakota |
| 62 | Anna Peterson | 22 | daughter-in-law | — | North Dakota |
| 63 | Larry Peterson | 2 | grandson | 0 | North Dakota |
| 64 | Emil D. Lenti | 50 | head | Laborer | Minnesota |
| 65 | Delbert H. Vader | 52 | head | Farmer | Iowa |
| 66 | Mary Vader | 45 | wife | — | North Dakota |
| 67 | Alvin Vader | 24 | son | Farmer | North Dakota |
| 68 | Donna Vader | 11 | daughter | — | North Dakota |
| 69 | Beth Taylor | 19 | lodger | Teacher | North Dakota |
| 70 | Charles Carlson | 71 | head | Farmer | Sweden |
| 71 | Tedie D. Philips | 50 | head | — | Minnesota |
| 72 | Sam D. Brown | 42 | head | Farmer | North Dakota |
Pedigree Summary
Oscar + 2 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)