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John Silva — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Alameda-County, California
Our Model Tree links this John Silva across the 1920, 1930 and 1940 US Censuses in Alameda-County, California (XGBoost, ~Confirmed) — first a head (b.~1877), then head of a 3-person household.
Age 63
b. ~1877
Male
Head
Born: Portugal
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Alameda-County, California |
| Surname | Silva |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 63 |
| Marital Status | Married |
| Birthplace | Portugal |
| 1935 Residence (City) | Oakland City |
| 1935 Residence (County) | Alameda |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Laborer |
| Industry | Port of Oakland |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1430 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Portugal |
| Birthplace (normalized) | portugal |
| Occupation | Laborer |
| Township / Ward | Oakland City |
| Est. Birth Year | ~1877 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Lettie Silva | Spouse | — | 53 | ~1887 |
| John Silva | Head | — | 63 | ~1877 |
| Agnes Silva | Daughter | — | 29 | ~1911 |
Census Appearances
1920
Alameda, California
Head, age 41
Alameda, California · implied b. ~1879 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Silva |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Portugal |
| Year of Immigration | 1905 |
| Naturalization Status | Alien |
| Father's Birthplace | Portugal |
| Mother's Birthplace | Portugal |
| Occupation | Owner |
| Industry | Dairy Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Portuguese |
| Home Owned/Rented | R |
| Birth Country | Portugal |
| Birthplace (normalized) | portugal |
1930
Alameda, California
Head, age 53
Alameda, California · implied b. ~1877 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Silva |
| Given Name | John |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Portugal |
| Naturalization Status | Alien |
| Year of Immigration | 1906 |
| Age at First Marriage | 25 |
| Father's Birthplace | Portugal |
| Mother's Birthplace | Portugal |
| Occupation | laborer |
| Industry | farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Portuguese |
| Home Owned/Rented | O |
| Home Value / Rent | 3500 |
| Radio Set | R |
| Veteran | yes |
| Birth Country | Portugal |
| Birthplace (normalized) | portugal |
1940
Alameda-County, California
Head, age 63
Alameda-County, California · implied b. ~1877 — 3 household members
| Surname | Silva |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 63 |
| Marital Status | Married |
| Birthplace | Portugal |
| 1935 Residence (City) | Oakland City |
| 1935 Residence (County) | Alameda |
| Naturalization Status | Naturalized |
| Occupation | Laborer |
| Industry | Port of Oakland |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1430 |
| Highest Grade | No 8 |
| 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 John Silva across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Silva
Head · 1940 · age 63 · b. ~1877 · 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
39 people indexed on this census page (nara:1940:m-t0627-00433-00703)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Elbert Hulee | 11 | Son | — | California |
| 2 | Mary Stewart | 85 | Boarder | — | California |
| 3 | Fernand Martins | 47 | Head | Metal Finisher | France |
| 4 | Levier Extra | None | Extra | — | — |
| 5 | Line Extra | None | Extra | — | — |
| 6 | Antone Nobrega | 24 | Head | Trimmer | Portugal |
| 7 | Eleanor Nobrega | 20 | Wife | — | California |
| 8 | Patricia Ann Nobrega | 1 | Daughter | — | California |
| 9 | Manuel Dias | 60 | Head | Owner | Portugal |
| 10 | Rosa Dias | 55 | Wife | — | Portugal |
| 11 | Verne Dias | 22 | Son | Laborer | California |
| 12 | George E. Reid | 54 | Head | Woodworker | California |
| 13 | Ruth E. Reid | 50 | Wife | — | California |
| 14 | Bertrand Reid | 33 | Son | Shipping Clerk | California |
| 15 | James Reid | 19 | Son | Floor Worker | California |
| 16 | Ella Faury | 85 | Mother-in-law | — | Iowa |
| 17 | Roger Gunderson | 2 | Grandson | — | California |
| 18 | Grace Holmes | 55 | Head | — | Nebraska |
| 19 | Mae Gates | 54 | Head | — | California |
| 20 | Gerald Gates | 22 | Son | Trimmer | California |
| 21 | Harriett Phillips | 53 | Head | Teacher | California |
| 22 | Harold Baldwin | 30 | Son-in-law | Teacher | California |
| 23 | Delight Baldwin | 27 | Daughter | Teacher | California |
| 24 | Charles Spegal | 57 | Head | Carpenter | Indiana |
| 25 | Lillian Spegal | 54 | Wife | — | Indiana |
| 26 | Hugo Drace | 67 | Head | Bartender | Iowa |
| 27 | Rose Drace | 59 | Wife | — | New York |
| 28 | George F. Samwell | 60 | Boarder | Salesman | Canada-English |
| 29 | Victor Alvistur | 34 | Head | Machinist | Peru |
| 30 | Eva Alvistur | 28 | Wife | Cashier | California |
| 31 | John Silva THIS PERSON | 63 | Head | Laborer | Portugal |
| 32 | Lettie Silva | 53 | Wife | — | Portugal |
| 33 | Agnes Silva | 29 | Daughter | Bookkeeper | California |
| 34 | Frank Fassio | 39 | Head | Maintenance | Italy |
| 35 | Pauline Fassio | 37 | Wife | — | California |
| 36 | Russell Fassio | 15 | Son | — | California |
| 37 | James Fassio | 14 | Son | — | California |
| 38 | Frank Jr. Fassio | 12 | Son | — | California |
| 39 | Augusta Mckay | 59 | Head | Housework | Hawaii |
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)