MO
Mary Olsen — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Douglas-County, Nebraska
Our Model Tree links this Mary Olsen across the 1930 and 1940 US Censuses in Douglas-County, Nebraska (XGBoost, ~Confirmed) — first a spouse (b.~1902), then head of a 5-person household.
Age 38
b. ~1902
Female
Spouse
Born: Nebraska
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Douglas-County, Nebraska |
| Surname | Olsen |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Nebraska |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Douglas |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Nebraska |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
| Township / Ward | Waterloo Precinct |
| Est. Birth Year | ~1902 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Chris Olsen | Head | — | 50 | ~1890 |
| Ruth Olsen | Daughter | — | 12 | ~1928 |
| Irene Olsen | Daughter | — | 17 | ~1923 |
| Mary Olsen | Spouse | — | 38 | ~1902 |
| Donald Olsen | Son | — | 18 | ~1922 |
Census Appearances
1930
Douglas, Nebraska
Other, age 28
Douglas, Nebraska · implied b. ~1902 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olsen |
| Given Name | Mary |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Nebraska |
| Age at First Marriage | 19 |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Kansas |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
1940
Douglas-County, Nebraska
Spouse, age 38
Douglas-County, Nebraska · implied b. ~1902 — 5 household members
| Surname | Olsen |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Nebraska |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Douglas |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Nebraska |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
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 Mary Olsen across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Olsen
Spouse · 1940 · age 38 · b. ~1902 · Nebraska
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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 — Douglas-County, Nebraska
Open full size
1940 US Federal Census — Douglas-County, Nebraska
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02245-00655)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Margaret Sibert | 87 | Head | — | Virginia |
| 42 | Frank Rak | 49 | Head | Laborer | Lithuania |
| 43 | James R White | 35 | Partner | Laborer | Missouri |
| 44 | Edward Reisner | 58 | Head | Laborer | Nebraska |
| 45 | Fred J. Struve | 39 | Head | Laborer | Nebraska |
| 46 | Helen Struve | 31 | wife | — | Nebraska |
| 47 | Fred E. Struve | 18 | son | Laborer | Nebraska |
| 48 | Dorothy Struve | 16 | daughter | — | Nebraska |
| 49 | Harold Struve | 12 | son | — | Nebraska |
| 50 | Dolores Struve | 10 | daughter | — | Nebraska |
| 51 | Robert Struve | 7 | son | — | Nebraska |
| 52 | Donald Struve | 5 | son | — | Nebraska |
| 53 | Ralph Struve | 3 | son | — | Nebraska |
| 54 | Janet Struve | 2 | daughter | — | Nebraska |
| 55 | Albert Waldecker | 51 | Head | Farmer | Nebraska |
| 56 | Vergie Waldecker | 44 | wife | — | Missouri |
| 57 | Francis M Milliken | 67 | Father in law | — | Missouri |
| 58 | Sam Christiansen | 48 | Head | Farm | Nebraska |
| 59 | Susie Christiansen | 43 | wife | — | Nebraska |
| 60 | Sam Jr Christiansen | 16 | son | Np | Nebraska |
| 61 | Bernard Behrendt | 30 | Head | Caretaker | Iowa |
| 62 | Ellanore Behrendt | 19 | wife | — | Nebraska |
| 63 | Donald Behrendt | 1 | son | — | Nebraska |
| 64 | Chris Olsen | 50 | Head | Foreman | Denmark |
| 65 | Mary Olsen THIS PERSON | 38 | wife | — | Nebraska |
| 66 | Donald Olsen | 18 | son | — | Nebraska |
| 67 | Irene Olsen | 17 | daughter | Typist | Nebraska |
| 68 | Ruth Olsen | 12 | daughter | — | Nebraska |
| 69 | Rinehard Labs | 42 | Head | Conductor | Nebraska |
| 70 | Lena Labs | 40 | wife | — | Nebraska |
| 71 | Melvin Labs | 16 | son | New Worker | Nebraska |
| 72 | Viola Labs | 15 | daughter | — | Nebraska |
| 73 | Robert Labs | 10 | son | — | Nebraska |
| 74 | Dale Labs | 7 | son | — | Nebraska |
| 75 | Hugh Fillmore | 67 | Head | — | Nebraska |
| 76 | Edward Engle | 14 | grandson | — | Nebraska |
| 77 | Henry Collins | 53 | Head | — | Missouri |
| 78 | Emily Collins | 49 | wife | Seamstress | Iowa |
| 79 | Alfred C. Bayless | 17 | grandson | Laborer | Iowa |
| 80 | Orville Humston | 60 | Head | Farmer | Indiana |
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)