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Oscar Larson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Roseau-County, Minnesota
Our Model Tree links this Oscar Larson across the 1910, 1920, 1930 and 1940 US Censuses in Roseau-County, Minnesota (XGBoost, ~Confirmed), with identified parents Andrew & Linnea — first a head (b.~1895), then head of a 4-person household.
Age 45
b. ~1895
Male
Head
Born: Minnesota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Roseau-County, Minnesota |
| Surname | Larson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Roseau |
| Additional Details | |
| Occupation | Carpenter |
| Industry | Building Construction |
| Class of Worker | PW |
| Hours Worked | 22 |
| Income (1939) | 308 |
| Highest Grade | H 1 |
| 1935 Residence | Minnesota |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Occupation | Carpenter |
| Township / Ward | Ross Twp |
| Est. Birth Year | ~1895 |
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 |
|---|---|---|---|---|
| Merlin Larson | Son | — | 12 | ~1928 |
| Marvin Larson | Son | — | 12 | ~1928 |
| Lily Larson | Spouse | — | 35 | ~1905 |
| Oscar Larson | Head | — | 45 | ~1895 |
Census Appearances
1910
Roseau, Minnesota
Son, age 13
Roseau, Minnesota · implied b. ~1897 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larson |
| Given Name | Oscar L |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1920
Roseau, Minnesota
Other, age 23
Roseau, Minnesota · implied b. ~1897 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larson |
| Given Name | Oscar |
| Relationship to Head | Son in law |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Minnesota |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Machinist |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1930
Roseau, Minnesota
Head, age 34
Roseau, Minnesota · implied b. ~1896 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Minnesota |
| Age at First Marriage | 23 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Roseau-County, Minnesota
Head, age 45
Roseau-County, Minnesota · implied b. ~1895 — 4 household members
| Surname | Larson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Roseau |
| Occupation | Carpenter |
| Industry | Building Construction |
| Class of Worker | PW |
| Hours Worked | 22 |
| Income (1939) | 308 |
| Highest Grade | H 1 |
| 1935 Residence | Minnesota |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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 Larson across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Andrew Larson (~0.92 confidence) and mother Linnea Larson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Andrew Larson
b. ~1858
Source father
● Household
· direct · ~0.92
Mother
Linnea Larson
b. ~1877
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Oscar Larson
Head · 1940 · age 45 · b. ~1895 · Minnesota
★ 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 — Roseau-County, Minnesota
Open full size
1940 US Federal Census — Roseau-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01954-00722)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Floyd Fugleberg | 19 | Son | Farm Laborer | Minnesota |
| 2 | Merlin Fugleberg | 16 | Son | Farm Laborer | Minnesota |
| 3 | Earl Fugleberg | 12 | Son | — | Minnesota |
| 4 | Soren Hagen | 94 | Father in law | — | Norway |
| 5 | Oscar Larson THIS PERSON | 45 | Head | Carpenter | Minnesota |
| 6 | Lily A. Larson | 35 | Wife | — | Minnesota |
| 7 | Marvin L. Larson | 12 | Son | — | Minnesota |
| 8 | Merlin L. Larson | 12 | Son | — | Minnesota |
| 9 | Charles A. Egstad | 43 | Head | — | Minnesota |
| 10 | Arthur W. Egstad | 36 | Brother | — | Minnesota |
| 11 | Anna Egstad | 70 | Mother | — | Norway |
| 12 | Clifford T. White | 37 | Head | Attendant | Minnesota |
| 13 | Maxine White | 26 | Wife | Attendant | Iowa |
| 14 | Peter J. Hanson | 74 | Head | Painter | Minnesota |
| 15 | Sigrid Hanson | 57 | Wife | — | Sweden |
| 16 | Alfred W. Nelson | 44 | Head | Farmer | Minnesota |
| 17 | Ida O. Nelson | 35 | Wife | — | Minnesota |
| 18 | Avis E. Nelson | 8 | Daughter | — | Minnesota |
| 19 | Mylan H. Nelson | 7 | Son | — | Minnesota |
| 20 | Dale W. Nelson | 4 | Son | — | Minnesota |
| 21 | Marlyn Nelson | 2 | Daughter | — | Minnesota |
| 22 | Haskon Sonssteng | 34 | Head | Machine Operator | Minnesota |
| 23 | Julia Sonssteng | 36 | Wife | — | Norway |
| 24 | Glen H. Sonssteng | 7 | Son | — | Minnesota |
| 25 | Gordon Broten | 42 | Head | Farmer | Minnesota |
| 26 | Mabel Broten | 30 | Wife | — | Minnesota |
| 27 | Francis Broten | 9 | Daughter | — | Minnesota |
| 28 | Duane S. Broten | 7 | Son | — | Minnesota |
| 29 | Newell L. Broten | 5 | Son | — | Minnesota |
| 30 | Shirley L. Broten | 2 | Daughter | — | Minnesota |
| 31 | Milford Hagen | 28 | Head | Farmer | Minnesota |
| 32 | Belcha Hagen | 25 | Wife | — | Minnesota |
| 33 | Mertrice B. Hagen | 2 | Daughter | — | Minnesota |
| 34 | Grant Gullikson | 38 | Head | Farmer | Minnesota |
| 35 | Hazel Gullikson | 27 | Wife | — | Minnesota |
| 36 | Mardel Gullikson | 9 | Daughter | — | Minnesota |
| 37 | Harriet Gullikson | 7 | Daughter | — | Minnesota |
| 38 | Judith Gullikson | 5 | Daughter | — | Minnesota |
| 39 | James Rosendrans | 36 | Head | Farmer | Minnesota |
| 40 | Lola Rosendrans | 34 | Wife | — | North Dakota |
Pedigree Summary
Oscar
Gen 1 · 2 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)