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Oscar Larson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Morrison-County, Minnesota
Our Model Tree links this Oscar Larson across the 1910, 1920, 1930 and 1940 US Censuses in Morrison-County, Minnesota (XGBoost, ~Confirmed), with identified parents Thorwald & Annie — first a head (b.~1887), then head of a 3-person household.
Age 53
b. ~1887
Male
Head
Born: Minnesota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Morrison-County, Minnesota |
| Surname | Larson |
| Given Name | Oscar A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | Ripley Twp. |
| 1935 Residence (County) | Morrison |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 76 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Occupation | Farmer |
| Township / Ward | Ripley Twp |
| Est. Birth Year | ~1887 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Oscar | Age | Birth yr |
|---|---|---|---|---|
| Lucille Larson | Daughter | — | 15 | ~1925 |
| Oscar Larson | Head | — | 53 | ~1887 |
| Hilda Larson | Spouse | — | 48 | ~1892 |
Census Appearances
1910
Morrison, Minnesota
Son, age 22
Morrison, Minnesota · implied b. ~1888 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larson |
| Given Name | Oscar |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Farm Labor |
| Industry | Home Farm |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1920
Morrison, Minnesota
Head, age 33
Morrison, Minnesota · implied b. ~1887 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larson |
| Given Name | Oscar A |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Minnesota |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Farmer |
| Industry | General |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Home Owned/Rented | R |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1930
Morrison, Minnesota
Head, age 43
Morrison, Minnesota · implied b. ~1887 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larson |
| Given Name | Oscar O |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Minnesota |
| Age at First Marriage | 27 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | O |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 26 |
| Veteran | No |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Morrison-County, Minnesota
Head, age 53
Morrison-County, Minnesota · implied b. ~1887 — 3 household members
| Surname | Larson |
| Given Name | Oscar A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | Ripley Twp. |
| 1935 Residence (County) | Morrison |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 76 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| 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 Thorwald Larson (~0.92 confidence) and mother Annie Larson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thorwald Larson
b. ~1851
Source father
● Household
· direct · ~0.92
Mother
Annie Larson
b. ~1853
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Oscar Larson
Head · 1940 · age 53 · b. ~1887 · 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 — Morrison-County, Minnesota
Open full size
1940 US Federal Census — Morrison-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01939-00708)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Helmer E. Carlson | 48 | Head | Farmer | Minnesota |
| 2 | Minnie C. Carlson | 45 | Wife | — | Minnesota |
| 3 | Eugene F. Carlson | 18 | Son | — | Minnesota |
| 4 | John W. Carlson | 16 | Son | — | Minnesota |
| 5 | Kenneth W. Carlson | 11 | Son | — | Minnesota |
| 6 | Clayton F. Carlson | 9 | Son | — | Minnesota |
| 7 | Edward A. Briggs | 69 | Head | — | Minnesota |
| 8 | Peter Lammer | 60 | Head | Farmer | Iowa |
| 9 | Leo M. Lammer | 14 | Son | Farm Laborer | Minnesota |
| 10 | Robert L. Bement | 47 | Head | Farmer | Iowa |
| 11 | Bertha M. Bement | 38 | Wife | — | Iowa |
| 12 | Lorraine E. Bement | 16 | Daughter | Housework | Minnesota |
| 13 | Marvin R. Bement | 13 | Son | — | Minnesota |
| 14 | Lyla M. Bement | 9 | Daughter | — | Minnesota |
| 15 | Harry S. Bement | 5 | Son | 0 | Minnesota |
| 16 | Edwin L. Bement | 1 | Son | 0 | Minnesota |
| 17 | William F. Rogers | 42 | Head | Painter & Carpenter | Minnesota |
| 18 | Floyd L. Shaff | 38 | Head | Farmer | Iowa |
| 19 | Betty M. Shaff | 27 | Wife | — | Minnesota |
| 20 | Delores F. Shaff | 8 | Daughter | — | Minnesota |
| 21 | Leo E. Shaff | 6 | Son | — | Minnesota |
| 22 | Wayne J. Shaff | 4 | Son | 0 | Minnesota |
| 23 | Albert L. Shaff | 3 | Son | 0 | Minnesota |
| 24 | Eunice L. Shaff | 3 | Daughter | 0 | Minnesota |
| 25 | Eva V. Tolles | 18 | Sister-in-law | Filling Station Attendant | Minnesota |
| 26 | Oscar A. Larson THIS PERSON | 53 | Head | Farmer | Minnesota |
| 27 | Hilda N. Larson | 48 | Wife | — | Illinois |
| 28 | Lucille I. Larson | 15 | Daughter | — | Minnesota |
| 29 | Carl A. Johnson | 60 | Head | Farmer | Sweden |
| 30 | Ruby B. Johnson | 51 | Wife | — | North Dakota |
| 31 | Albert J. Johnson | 54 | Head | Farmer | Illinois |
| 32 | Nels H. Petersen | 35 | Head | House-To-House Salesman | Minnesota |
| 33 | Ruth A. Petersen | 36 | Wife | — | Minnesota |
| 34 | Lowell D. Petersen | 11 | Son | — | Minnesota |
| 35 | Elma Peterzen | 75 | Head | — | Sweden |
| 36 | Peter W. Larson | 75 | Head | — | Sweden |
| 37 | Emma G. Larson | 70 | Wife | — | Sweden |
| 38 | Charles L. Tew | 46 | Head | — | Minnesota |
| 39 | Erick Persson | 62 | Head | — | Sweden |
| 40 | A. Augusta Persson | 57 | Wife | — | Sweden |
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)