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Annie Olson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cavalier-County, North Dakota
Our Model Tree links this Annie Olson across the 1930 and 1940 US Censuses in Cavalier-County, North Dakota (XGBoost, ~Confirmed) — first a spouse (b.~1891), then head of a 7-person household.
Age 49
b. ~1891
Female
Spouse
Born: North Dakota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cavalier-County, North Dakota |
| Surname | Olson |
| Given Name | Annie |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | North Dakota |
| 1935 Residence (City) | Cypress Township |
| 1935 Residence (County) | Cavalier |
| Additional Details | |
| Occupation | Housewife |
| Industry | Farming |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
| Occupation | Housewife |
| Township / Ward | Cypress Township |
| Est. Birth Year | ~1891 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Annie | Age | Birth yr |
|---|---|---|---|---|
| Emil Olson | Head | — | 54 | ~1886 |
| Ethel Olson | Daughter | — | 22 | ~1918 |
| William Olson | Other | — | 14 | ~1926 |
| Edgar Olson | Son | — | 29 | ~1911 |
| Earl Olson | Son | — | 25 | ~1915 |
| Minnie Olson | Daughter | — | 26 | ~1914 |
| Annie Olson | Spouse | — | 49 | ~1891 |
Census Appearances
1930
Cavalier, North …
Other, age 39
Cavalier, North Dakota · implied b. ~1891 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olson |
| Given Name | Annie M. |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | North Dakota |
| Age at First Marriage | 18 |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1940
Cavalier-County, North …
Spouse, age 49
Cavalier-County, North Dakota · implied b. ~1891 — 7 household members
| Surname | Olson |
| Given Name | Annie |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | North Dakota |
| 1935 Residence (City) | Cypress Township |
| 1935 Residence (County) | Cavalier |
| Occupation | Housewife |
| Industry | Farming |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| 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 Annie Olson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Annie Olson
Spouse · 1940 · age 49 · b. ~1891 · North Dakota
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Cavalier-County, North Dakota
Open full size
1940 US Federal Census — Cavalier-County, North Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02998-00411)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Robert D. Mc Laren | 60 | Head | Farmer | Canada English |
| 2 | Ina Mc Laren | 55 | Wife | Housewife | South Dakota |
| 3 | Ida Mc Laren | 24 | Daughter | Maid | North Dakota |
| 4 | Lloyd R. Mc Laren | 18 | Son | Kitchen Police | North Dakota |
| 5 | Walter Mc Laren | 15 | Son | — | North Dakota |
| 6 | Leland Mc Laren | 12 | Son | — | North Dakota |
| 7 | W. Hansen | 40 | Head | Farmer | Minnesota |
| 8 | Lester D. Ormiston | 22 | Head | Farmer | North Dakota |
| 9 | Edna Ormiston | 22 | Wife | Housewife | North Dakota |
| 10 | George Leland Ormiston | 1 | Son | — | North Dakota |
| 11 | J. O. Thompson | 65 | Head | Farmer | Illinois |
| 12 | Cornelia Thompson | 68 | Wife | Housewife | Norway |
| 13 | Emil Olson | 54 | Head | Farmer | North Dakota |
| 14 | Annie Olson THIS PERSON | 49 | Wife | Housewife | North Dakota |
| 15 | Edgar Olson | 29 | Son | Farm Labor | North Dakota |
| 16 | Minnie Olson | 26 | Daughter | Maid | North Dakota |
| 17 | Ethel Olson | 22 | Daughter | Maid | North Dakota |
| 18 | Earl Olson | 25 | Son | — | North Dakota |
| 19 | William Olson | 14 | Daughter's Son | — | North Dakota |
| 20 | E. E. Johnston | 42 | Head | Farmer | Minnesota |
| 21 | Mabel Johnston | 30 | Wife | Housewife | North Dakota |
| 22 | Grace Johnston | 8 | Daughter | — | North Dakota |
| 23 | Lois Johnston | 6 | Daughter | — | North Dakota |
| 24 | I. Julia Johnston | 2 | Daughter | — | North Dakota |
| 25 | Norman Johnston | 0 | Son | — | North Dakota |
| 26 | Peter Nelson | 55 | Head | Farmer | Michigan |
| 27 | Ida Nelson | 43 | Wife | Housewife | North Dakota |
| 28 | Harley Nelson | 24 | Son | Farm Help | North Dakota |
| 29 | Alice Nelson | 25 | Daughter | House Maid | North Dakota |
| 30 | Earl Nelson | 15 | Son | Farm Helper | North Dakota |
| 31 | Walter Nelson | 11 | Son | — | North Dakota |
| 32 | Duane Nelson | 9 | Son | — | North Dakota |
| 33 | Tolley T. Iverson | 53 | Head | Farmer | Norway |
| 34 | Mildred B. Iverson | 42 | Wife | Housewife | Iowa |
| 35 | Fern E. Iverson | 13 | Daughter | — | North Dakota |
| 36 | Ardell Iverson | 8 | Daughter | — | North Dakota |
| 37 | Dale Iverson | 5 | Son | — | North Dakota |
| 38 | John Gronhovd | 44 | Head | Farmer | North Dakota |
| 39 | Emma Gronhovd | 34 | Wife | Housewife | North Dakota |
| 40 | Glenn Gronhovd | 1 | Son | — | North Dakota |
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)