MD
Mabel Davis — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Umatilla-County, Oregon
Our Model Tree links this Mabel Davis across the 1920, 1930 and 1940 US Censuses in Umatilla-County, Oregon (XGBoost, ~Confirmed) — first a spouse (b.~1900), then head of a 5-person household.
Age 40
b. ~1900
Female
Spouse
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Umatilla-County, Oregon |
| Surname | Davis |
| Given Name | Mabel O |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Umatilla |
| Additional Details | |
| Occupation | 0 |
| Highest Grade | G 2 |
| 1935 Residence | Oregon |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | 0 |
| Township / Ward | Pendleton |
| Est. Birth Year | ~1900 |
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 Mabel | Age | Birth yr |
|---|---|---|---|---|
| Eleanor Davis | Daughter | — | 11 | ~1929 |
| Helen Davis | Daughter | — | 20 | ~1920 |
| De Davis | Head | — | 57 | ~1883 |
| Lloyd Davis | Son | — | 16 | ~1924 |
| Mabel Davis | Spouse | — | 40 | ~1900 |
Census Appearances
1920
Umatilla, Oregon
Spouse, age 20
Umatilla, Oregon · implied b. ~1900 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Mable O. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Umatilla, Oregon
Spouse, age 30
Umatilla, Oregon · implied b. ~1900 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Mabel E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 18 |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Home Owned/Rented | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Umatilla-County, Oregon
Spouse, age 40
Umatilla-County, Oregon · implied b. ~1900 — 5 household members
| Surname | Davis |
| Given Name | Mabel O |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Umatilla |
| Occupation | 0 |
| Highest Grade | G 2 |
| 1935 Residence | Oregon |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Mabel Davis across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mabel Davis
Spouse · 1940 · age 40 · b. ~1900 · Oregon
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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 — Umatilla-County, Oregon
Open full size
1940 US Federal Census — Umatilla-County, Oregon
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03380-00421)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Margaret J Ruson | 36 | Wife | 0 | Washington |
| 42 | Mary P Ruson | 8 | Daughter | — | Oregon |
| 43 | Margaret J Ruson | 4 | Daughter | — | Oregon |
| 44 | Joseph L Cox | 56 | Head | Clerk | Iowa |
| 45 | Florence A Cox | 59 | Wife | 0 | Indiana |
| 46 | Gertrude Hansen | 30 | Lodger | English Teacher | Washington |
| 47 | William P Clarke | 26 | Head | Manager | Oregon |
| 48 | William F Clarke | 3 | Son | — | Oregon |
| 49 | Ivey D Clarke | 28 | Wife | 0 | Oregon |
| 50 | Frank Rutherford | None | Head | — | Wrong name entered because of absence from city |
| 51 | Oscar J D Bragotti | 37 | Head | Owner | Texas |
| 52 | Marjorie C Bragotti | 26 | Wife | Bookkeeper | Oregon |
| 53 | John A Bragotti | 2 | Son | — | Oregon |
| 54 | Jacob A Keeler | 39 | Head | Truck Driver | Kansas |
| 55 | Juanita V Keeler | 26 | Wife | 0 | Oregon |
| 56 | Susan D Keeler | 2 | Daughter | — | Oregon |
| 57 | John K Bott | 88 | Grandfather | 0 | Virginia |
| 58 | Henry S Brown | 54 | Head | Partner | Minnesota |
| 59 | Helen S Brown | 45 | Wife | Musician | Oregon |
| 60 | Harriet L Brown | 24 | Daughter | 0 | Oregon |
| 61 | Judith O Brown | 16 | Daughter | 0 | Washington |
| 62 | Mary M Gerard | 24 | Head | 0 | Oregon |
| 63 | Mary J Barker | 14 | Granddaughter | 0 | Oregon |
| 64 | Helen Stevens | 16 | Lodger | 0 | Washington |
| 65 | De Soto W Davis | 57 | Head | Assessor | Missouri |
| 66 | Mabel O Davis THIS PERSON | 40 | Wife | 0 | Iowa |
| 67 | Helen L Davis | 20 | Daughter | 0 | Oregon |
| 68 | Lloyd L Davis | 16 | Son | 0 | Oregon |
| 69 | Eleanor C Davis | 11 | Daughter | — | Oregon |
| 70 | Stanley Day | 31 | Head | Manager | Idaho |
| 71 | Christine S Day | 32 | Wife | 0 | Wyoming |
| 72 | Gene Day | 5 | Son | — | Idaho |
| 73 | Susan C Day | 0 | Daughter | — | Oregon |
| 74 | Claire D Bomer | 57 | Head | Proprietor | Missouri |
| 75 | Lawrence Mcintyre | 44 | Head | Superviser | Oregon |
| 76 | Ida O Mcintyre | 42 | Wife | 0 | Washington |
| 77 | James Mcintyre | 14 | Son | 0 | Oregon |
| 78 | John Mcintyre | 12 | Son | — | Oregon |
| 79 | Alexander Mackenzie | 80 | Head | 0 | Scotland |
| 80 | Clara Mackenzie | 74 | Wife | 0 | Germany |
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)