MO
Mary Oliver — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cass-County, Minnesota
Our Model Tree links this Mary Oliver across the 1920, 1930 and 1940 US Censuses in Cass-County, Minnesota (XGBoost, ~Confirmed), with identified parents Richard & Robert — first a spouse (b.~1916), then head of a 4-person household.
Age 24
b. ~1916
Female
Spouse
Born: Minnesota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cass-County, Minnesota |
| Surname | Oliver |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | Plainview |
| 1935 Residence (County) | Cass |
| Additional Details | |
| Occupation | Housewife |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Minnesota |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Occupation | Housewife |
| Township / Ward | Birch Lake Twp |
| Est. Birth Year | ~1916 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Donamarie Oliver | Daughter | — | 9 | ~1931 |
| Richard Oliver | Head | — | 26 | ~1914 |
| Mary Oliver | Other | — | 61 | ~1879 |
| Mary Oliver | Spouse | — | 24 | ~1916 |
Census Appearances
1920
Cass, Minnesota
Daughter, age 3
Cass, Minnesota · implied b. ~1917 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Oliver |
| Given Name | Mabel |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | New York |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1930
Cass, Minnesota
Daughter, age 13
Cass, Minnesota · implied b. ~1917 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Oliver |
| Given Name | Mable |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | New York |
| Can Read/Write | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Cass-County, Minnesota
Spouse, age 24
Cass-County, Minnesota · implied b. ~1916 — 4 household members
| Surname | Oliver |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | Plainview |
| 1935 Residence (County) | Cass |
| Occupation | Housewife |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 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 Mary Oliver across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Richard Oliver (~0.92 confidence) and father Robert Oliver (~0.92 confidence) and mother Glory Oliver (~0.92 confidence) and mother Florence Oliver (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Richard Oliver
b. ~1891
Source father
● Household
· direct · ~0.92
Father
Robert Oliver
b. ~1891
Source father
● Household
· direct · ~0.92
Mother
Glory Oliver
b. ~1895
Source mother
● Household
· direct · ~0.92
Mother
Florence Oliver
b. ~1896
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Oliver
Spouse · 1940 · age 24 · b. ~1916 · 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 — Cass-County, Minnesota
Open full size
1940 US Federal Census — Cass-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01912-00072)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Wm L Schultz | 49 | Head | Farmer | Iowa |
| 2 | Martha L Schultz | 45 | Wife | Housewife | Iowa |
| 3 | Harry K Schultz | 15 | Son | — | Iowa |
| 4 | Leslie Johnson | 34 | Head | Farmer | Minnesota |
| 5 | Archie Johnson | 32 | Brother | Farmer | Minnesota |
| 6 | Richard A Warre | 40 | Head | Farmer | Minnesota |
| 7 | Clara L Warre | 31 | Wife | Housewife | Nebraska |
| 8 | John Mantz | 62 | Lodger | Steam Engineer | Germany |
| 9 | Gustav A Holmberg | 34 | Head | Farmer | Minnesota |
| 10 | Delores H Holmberg | 30 | Wife | Housewife | Iowa |
| 11 | Clifford L Holmberg | 7 | Son | — | Minnesota |
| 12 | Gloria L Holmberg | 4 | Daughter | — | Minnesota |
| 13 | Asa B Neher | 71 | Head | — | Wisconsin |
| 14 | Agusta C Neher | 53 | Wife | Housewife | Nebraska |
| 15 | Burle A Neher | 30 | Son | Carpenter | South Dak |
| 16 | Kenneth A Neher | 22 | Son | Carpenter | South Dak |
| 17 | Gerald E Neher | 14 | Son | — | Minnesota |
| 18 | Marianne M Neher | 17 | Daughter | — | Nebraska |
| 19 | Adrian G Neher | 15 | Son | — | Minnesota |
| 20 | John J Brown | 56 | Head | Farmer | Minnesota |
| 21 | Frances Brown | 47 | Wife | Housewife | Minnesota |
| 22 | Frank E Brown | 23 | Son | — | Minnesota |
| 23 | Edwin Bakken | 31 | Head | Farmer | Minnesota |
| 24 | Gladys M Bakken | 25 | Wife | Housewife | Minnesota |
| 25 | Joan M Bakken | 3 | Daughter | — | Minnesota |
| 26 | Lincol W Kobi | 30 | Head | Farmer | Minnesota |
| 27 | Hulda R Kobi | 33 | Wife | Housewife | Minnesota |
| 28 | Madalen L Kobi | 9 | Daughter | — | Minnesota |
| 29 | Donald L Kobi | 7 | Son | — | Minnesota |
| 30 | Carol A Kobi | 0 | Daughter | — | Minnesota |
| 31 | Richard Oliver | 26 | Head | Farmer | Minnesota |
| 32 | Mary E Oliver THIS PERSON | 24 | Wife | Housewife | Minnesota |
| 33 | Donamarie Oliver | 9 | Daughter | — | Minnesota |
| 34 | Mary L Oliver | 61 | Mother | — | Minnesota |
| 35 | Ed L Harrington | 39 | Head | Laborer | Minnesota |
| 36 | Laura A Harrington | 39 | Wife | Housewife | Minnesota |
| 37 | Fay L Harrington | 15 | Son | — | Minnesota |
| 38 | Rale R Hausberg | 35 | Head | Sawyer | Minnesota |
| 39 | Inga L Hausberg | 32 | Wife | Housewife | Minnesota |
| 40 | Victor W Hausberg | 12 | Son | — | Minnesota |
Pedigree Summary
Mary
Gen 1 · 4 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)