MD
Mary Day — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Douglas-County, Nebraska
Our Model Tree links this Mary Day across the 1910, 1920, 1930 and 1940 US Censuses in Douglas-County, Nebraska (XGBoost, ~Confirmed) — first a head (b.~1873), then head of a 3-person household.
Age 67
b. ~1873
Female
Head
Born: Michigan
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Douglas-County, Nebraska |
| Surname | Day |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 67 |
| Marital Status | Widowed |
| Birthplace | Michigan |
| 1935 Residence (City) | Omaha |
| 1935 Residence (County) | Douglas |
| Additional Details | |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Township / Ward | Omaha |
| Est. Birth Year | ~1873 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Leola Day | Daughter | — | 28 | ~1912 |
| Mary Day | Head | — | 67 | ~1873 |
| Harold Day | Son | — | 31 | ~1909 |
Census Appearances
1910
Douglas, Nebraska
Spouse, age 37
Douglas, Nebraska · implied b. ~1873 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Day |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Michigan |
| Years Married | 20 |
| Children Born | 2 |
| Children Living | 1 |
| Father's Birthplace | New York |
| Mother's Birthplace | Michigan |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1920
Douglas, Nebraska
Spouse, age 46
Douglas, Nebraska · implied b. ~1874 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Day |
| Given Name | Mary A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Douglas, Nebraska
Other, age 57
Douglas, Nebraska · implied b. ~1873 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Day |
| Given Name | Mary |
| Relationship to Head | mother |
| Sex | F |
| Color / Race | White |
| Age | 57 |
| Marital Status | Widowed |
| Birthplace | Michigan |
| Age at First Marriage | 22 |
| Father's Birthplace | New York |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read/Write | Yes |
| Home Owned/Rented | No |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Douglas-County, Nebraska
Head, age 67
Douglas-County, Nebraska · implied b. ~1873 — 3 household members
| Surname | Day |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 67 |
| Marital Status | Widowed |
| Birthplace | Michigan |
| 1935 Residence (City) | Omaha |
| 1935 Residence (County) | Douglas |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 Day across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Day
Head · 1940 · age 67 · b. ~1873 · 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
38 people indexed on this census page (nara:1940:m-t0627-02275-00828)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Martin Petersen | 36 | Head | Truck Driver | Iowa |
| 42 | Gemma Petersen | 32 | Wife | — | Nebraska |
| 43 | Martin Jr. Petersen | 14 | Son | — | Nebraska |
| 44 | Doris Mae Petersen | 11 | Daughter | — | Nebraska |
| 46 | Mary Day THIS PERSON | 67 | Head | — | Michigan |
| 47 | Harold Day | 31 | Son | Office Clerk | Nebraska |
| 48 | Leola Day | 28 | Daughter | — | Iowa |
| 49 | Sarah Thompson | 67 | Head | — | Norway |
| 50 | Herbert Johnson | 35 | Head | Automobile Mechanic | Kansas |
| 51 | Margaret Johnson | 34 | Wife | — | Nebraska |
| 52 | Gilbert Johnson | 12 | Son | — | Nebraska |
| 53 | Harlan Johnson | 10 | Son | — | Nebraska |
| 55 | Norman S. Young | 49 | Head | Auditor | Nebraska |
| 56 | Lucille Young | 33 | Wife | — | Kentucky |
| 57 | Dorothy Young | 18 | Daughter | — | Nebraska |
| 58 | Lois Young | 16 | Daughter | — | Nebraska |
| 59 | Betty Ann Young | 11 | Daughter | — | Nebraska |
| 60 | G. Ronald Pierce | 32 | Head | Tool-Maker | Iowa |
| 61 | Alice Pierce | 32 | Wife | — | Iowa |
| 62 | Jacqueline Pierce | 8 | Daughter | — | Nebraska |
| 63 | Terry Pierce | 3 | Son | — | Nebraska |
| 64 | Sandra Pierce | 1 | Daughter | — | Nebraska |
| 65 | Lewis Lewis | 40 | Head | Secretary | Nebraska |
| 66 | Eleanor Lewis | 40 | Wife | — | Nebraska |
| 67 | Robert Lewis | 14 | Son | — | Nebraska |
| 68 | Jacqueline Lewis | 12 | Daughter | — | Nebraska |
| 69 | Marilyn Lewis | 9 | Daughter | — | Nebraska |
| 70 | Charles Reuter | 35 | Head | Operator | Wisconsin |
| 71 | Herman Reuter | 70 | Father | — | Germany |
| 72 | Emilie Reuter | 63 | Mother | — | Germany |
| 73 | Caroline Fritz | 43 | Head | Bakery Helper | Nebraska |
| 74 | Katherine Fritz | 65 | Mother | — | Germany |
| 75 | Sophie Allen | 40 | Sister | Waitress | Nebraska |
| 76 | Edward Allen | 12 | Nephew | — | Nebraska |
| 77 | Richard Dohse | 28 | Head | Salesman | Nebraska |
| 78 | Irene Dohse | 28 | Wife | — | Illinois |
| 79 | Henry Gubi | 61 | Father in law | Carpenter | Illinois |
| 80 | Anna Gubi | 61 | Mother in law | — | Iowa |
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)