MO
Mary Olson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Wright-County, Minnesota
Our Model Tree links this Mary Olson across the 1930 and 1940 US Censuses in Wright-County, Minnesota (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 7-person household.
Age 11
b. ~1929
Female
Daughter
Born: Minnesota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Wright-County, Minnesota |
| Surname | Olson |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | French Lake township |
| 1935 Residence (County) | Wright |
| Additional Details | |
| Highest Grade | S 4 |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Township / Ward | French Lake Township |
| Est. Birth Year | ~1929 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Delores Olson | Daughter | — | 8 | ~1932 |
| Mary Olson | Daughter | — | 11 | ~1929 |
| Louise Olson | Spouse | — | 43 | ~1897 |
| Carl Olson | Son | — | 17 | ~1923 |
| Reuben Olson | Son | — | 18 | ~1922 |
| Ludvig Olson | Head | — | 52 | ~1888 |
| Phillys Olson | Daughter | — | 6 | ~1934 |
Census Appearances
1930
Wright, Minnesota
Daughter, age 1
Wright, Minnesota · implied b. ~1929 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olson |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Minnesota |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Wright-County, Minnesota
Daughter, age 11
Wright-County, Minnesota · implied b. ~1929 — 7 household members
| Surname | Olson |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | French Lake township |
| 1935 Residence (County) | Wright |
| Highest Grade | S 4 |
| 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 Mary Olson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Olson
Daughter · 1940 · age 11 · b. ~1929 · Minnesota
★ You are viewing this record
Sibling
Phillys Olson
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Reuben Olson
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Delores Olson
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carl Olson
Sibling · 1940 · age 17
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 — Wright-County, Minnesota
Open full size
1940 US Federal Census — Wright-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01970-00379)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ernest Snabb | 28 | Son | Farming | Minnesota |
| 2 | William Snabb | 25 | Son | Farming | Minnesota |
| 3 | Evert Snabb | 23 | Son | Farming | Minnesota |
| 4 | Stanley Snabb | 15 | Son | Farming | Minnesota |
| 5 | Clifford Snabb | 12 | Son | — | Minnesota |
| 6 | Dorthy Lundeen | 12 | Grandchild | — | Minnesota |
| 7 | Ludvig Olson | 52 | Head | Farm | Minnesota |
| 8 | Louise Olson | 43 | Wife | At Home | Minnesota |
| 9 | Reuben Olson | 18 | Son | Reforestation | Minnesota |
| 10 | Carl Olson | 17 | Son | Farming | Minnesota |
| 11 | Mary Olson THIS PERSON | 11 | Daughter | — | Minnesota |
| 12 | Delores Olson | 8 | Daughter | — | Minnesota |
| 13 | Phillys Olson | 6 | Daughter | — | Minnesota |
| 14 | Gust Ortquist | 31 | Head | Farm | Minnesota |
| 15 | Agnes Ortquist | 30 | Wife | At Home | Minnesota |
| 16 | Jovann Ortquist | 8 | Daughter | — | Minnesota |
| 17 | Arlene Ortquist | 6 | Daughter | — | Minnesota |
| 18 | John Ortquist | 82 | Father | — | Sweden |
| 19 | Fredolph Yentielson | 52 | Head | Farm | Minnesota |
| 20 | Ida Yentielson | 49 | Wife | At Home | Minnesota |
| 21 | Grace Yentielson | 14 | Daughter | At Home | Minnesota |
| 22 | Swan Brattstrom | 82 | Father in law | — | Sweden |
| 23 | Eldo Nelson | 57 | Brother | Farm | Minnesota |
| 24 | Helen A. Nelson | 42 | Sister in law | House Work | Minnesota |
| 25 | John M. Johnson | 46 | Head | Farm | Minnesota |
| 26 | Alice Johnson | 30 | Wife | At Home | Minnesota |
| 27 | Miarah Johnson | 7 | Daughter | — | Minnesota |
| 28 | Grace Johnson | 3 | Daughter | — | Minnesota |
| 29 | Pete Johnson | 82 | Head | Farm Work | Sweden |
| 30 | Mary Johnson | 75 | Wife | House Work | Sweden |
| 31 | Zelma Johnson | 37 | Daughter | At Home | Minnesota |
| 32 | Leroy Anderson | 25 | Head | Farm | Minnesota |
| 33 | Irene Anderson | 23 | Wife | At Home | Minnesota |
| 34 | Roland Anderson | 4 | Son | — | Minnesota |
| 35 | Erick Erickson | 69 | Head | — | Sweden |
| 36 | Selma Erickson | 57 | Wife | At Home | Minnesota |
| 37 | Charles Walberg | 59 | Head | Farm | Minnesota |
| 38 | Inga Walberg | 54 | Wife | At Home | Minnesota |
| 39 | Carl F. Walberg | 18 | Son | Biological | Minnesota |
| 40 | George Walberg | 15 | Son | Farm | Minnesota |
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)