MG
Mary George — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Alameda-County, California
Our Model Tree links this Mary George across the 1920, 1930 and 1940 US Censuses in Alameda-County, California (XGBoost, ~Confirmed) — first a head (b.~1870), then head of a 2-person household.
Age 70
b. ~1870
Female
Head
Born: Portugal
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Alameda-County, California |
| Surname | George |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 70 |
| Marital Status | Widowed |
| Birthplace | Portugal |
| 1935 Residence (City) | Washington Township |
| 1935 Residence (County) | Alameda |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth Country | Portugal |
| Birthplace (normalized) | portugal |
| Township / Ward | Washington Township |
| Est. Birth Year | ~1870 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Viola George | Daughter | — | 50 | ~1890 |
| Mary George | Head | — | 70 | ~1870 |
Census Appearances
1920
Alameda, California
Spouse, age 50
Alameda, California · implied b. ~1870 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | George |
| Given Name | Marie |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Portugal |
| Year of Immigration | 1887 |
| Naturalization Status | Alien |
| Father's Birthplace | Portugal |
| Mother's Birthplace | Portugal |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Portuguese |
| Birth Country | Portugal |
| Birthplace (normalized) | portugal |
1930
Alameda, California
Head, age 60
Alameda, California · implied b. ~1870 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | George |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 60 |
| Marital Status | Widowed |
| Birthplace | Portugal |
| Naturalization Status | Naturalized |
| Year of Immigration | 1887 |
| Father's Birthplace | Portugal |
| Mother's Birthplace | Portugal |
| Can Read/Write | No |
| Mother Tongue | Portuguese |
| Home Owned/Rented | O |
| Home Value / Rent | 40 |
| Birth Country | Portugal |
| Birthplace (normalized) | portugal |
1940
Alameda-County, California
Head, age 70
Alameda-County, California · implied b. ~1870 — 2 household members
| Surname | George |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 70 |
| Marital Status | Widowed |
| Birthplace | Portugal |
| 1935 Residence (City) | Washington Township |
| 1935 Residence (County) | Alameda |
| Naturalization Status | Naturalized |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth Country | Portugal |
| Birthplace (normalized) | portugal |
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 George across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary George
Head · 1940 · age 70 · b. ~1870 · California
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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 — Alameda-County, California
Open full size
1940 US Federal Census — Alameda-County, California
Page Contents
19 people indexed on this census page (nara:1940:m-t0627-00191-00533)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Manuel Lopez | 54 | Head | Farmer | Portugal |
| 2 | Mary Lopez | 56 | Wife | — | California |
| 3 | Joseph Calderia | 80 | Uncle | — | Portugal |
| 4 | Kiu Loue Sung | 62 | Head | Laborer | California |
| 5 | Yung Kao Pu | 72 | Partner | Laborer | China |
| 6 | Fong Chin | 60 | Partner | Laborer | China |
| 7 | Run Louie Yau | 40 | Head | Farmer | Hawaii |
| 8 | Lee Yau | 41 | Wife | — | China |
| 9 | Ellen Yau | 2 | Daughter | — | California |
| 10 | Juan Martinez | 59 | Head | — | Puerto Rico |
| 11 | Manuel Cueton | 35 | Partner | Laborer | California |
| 14 | John B. Hancock | 26 | Hired man | Caretaker | Tennessee |
| 15 | Mary George THIS PERSON | 70 | Head | — | Portugal |
| 16 | Viola George | 50 | Daughter | Teacher | California |
| 17 | Patricio Medina | 58 | Head | Laborer | Puerto Rico |
| 19 | Ramon Montellano | 8 | Nephew | — | California |
| 20 | Marcelino Montellano | 7 | Nephew | — | California |
| 21 | Consuelo Montellano | 4 | Niece | — | California |
| 22 | Yoshituri Kumamoto | 57 | Head | Farmer | Japan |
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)