MS
Mary Silva — 1940 US Census Record
Model Tree available1940 United States Federal Census · Alameda-County, California
Our Model Tree links this Mary Silva across the 1920, 1930 and 1940 US Censuses in Alameda-County, California (XGBoost, ~Confirmed), with identified parents Rose — first a spouse (b.~1897), then head of a 5-person household.
Age 43
b. ~1897
Female
Spouse
Born: Azores Is.
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Alameda-County, California |
| Surname | Silva |
| Given Name | Mary C. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Azores Is. |
| 1935 Residence (City) | Mission San Jose |
| 1935 Residence (County) | Alameda |
| Naturalization Status | Alien |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birthplace (normalized) | azores is |
| Township / Ward | Mission San Jose |
| Est. Birth Year | ~1897 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Marie Silva | Daughter | — | 7 | ~1933 |
| Margaret Silva | Daughter | — | 14 | ~1926 |
| Matthew Silva | Head | — | 38 | ~1902 |
| Henry Silva | Son | — | 15 | ~1925 |
| Mary Silva | Spouse | — | 43 | ~1897 |
Census Appearances
1920
Santa Clara, …
Other, age 24
Santa Clara, California · implied b. ~1896 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Silva |
| Given Name | Mary F. |
| Relationship to Head | Hired man's wife |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Azores Is. |
| Year of Immigration | 1915 |
| Naturalization Status | Alien |
| Father's Birthplace | Azores Is. |
| Mother's Birthplace | Azores Is. |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Portuguese |
| Birthplace (normalized) | azores is |
1930
Santa Clara, …
Daughter, age 34
Santa Clara, California · implied b. ~1896 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Silva |
| Given Name | Maria |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Azores Is |
| Naturalization Status | Alien |
| Year of Immigration | 1914 |
| Age at First Marriage | 29 |
| Father's Birthplace | Azores Is |
| Mother's Birthplace | Azores Is |
| Occupation | Garage |
| Industry | Garage |
| Class of Worker | O |
| Can Read/Write | Yes |
| Mother Tongue | Portuguese |
| Birthplace (normalized) | azores is |
1940
Alameda-County, California
Spouse, age 43
Alameda-County, California · implied b. ~1897 — 5 household members
| Surname | Silva |
| Given Name | Mary C. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Azores Is. |
| 1935 Residence (City) | Mission San Jose |
| 1935 Residence (County) | Alameda |
| Naturalization Status | Alien |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birthplace (normalized) | azores is |
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 Silva across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Rose Silva (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Rose Silva
b. ~1864
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Silva
Spouse · 1940 · age 43 · b. ~1897 · California
★ 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 — Alameda-County, California
Open full size
1940 US Federal Census — Alameda-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00191-00780)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Harold R. Millard | 40 | Head | Baker | California |
| 42 | Hazel K. Millard | 35 | Wife | — | California |
| 43 | Nadine L. Millard | 1 | Daughter | — | California |
| 44 | Louise A. Kell | 68 | Mother-in-law | — | California |
| 45 | Manuel F. Azevedo | 49 | Head | Farmer | California |
| 46 | Cornelius S. Enright | 69 | Head | — | Iowa |
| 47 | Marie A. Enright | 67 | Wife | — | Minnesota |
| 48 | Elizabeth F. Gustafson | 72 | Head | — | California |
| 49 | Oscar F. Underhill | 23 | Head | — | Indiana |
| 50 | Maria Pires | 65 | Head | — | Azores Is. |
| 51 | Josephine Fernandez | 31 | Head | — | California |
| 52 | Geraldine Fernandez | 10 | Daughter | — | California |
| 53 | Lawrence J. Fernandez | 8 | Son | — | California |
| 54 | Clarence J. Fernandez | 8 | Son | — | California |
| 55 | William Lawrence | 64 | Head | — | Azores Is. |
| 56 | Adelaide Lawrence | 49 | Wife | — | Azores Is. |
| 57 | Marie Lawrence | 13 | Daughter | — | California |
| 58 | Virginia Lawrence | 11 | Daughter | — | California |
| 59 | Matthew Silva | 38 | Head | Laborer | Azores Is. |
| 60 | Mary C. Silva THIS PERSON | 43 | Wife | — | Azores Is. |
| 61 | Henry M. Silva | 15 | Son | — | California |
| 62 | Margaret M. Silva | 14 | Daughter | — | California |
| 63 | Marie E. Silva | 7 | Daughter | — | California |
| 64 | Antone F. Pereira | 47 | Head | Shoe Repairer | California |
| 65 | Leonora C. Pereira | 41 | Wife | — | California |
| 66 | Adeline R. Pereira | 16 | Daughter | — | California |
| 67 | William A. Pereira | 8 | Son | — | California |
| 68 | Frank S. Albert | 62 | Head | — | Azores Is. |
| 69 | Rose Albert | 54 | Wife | — | California |
| 70 | Frank Albert | 26 | Son | Laborer | California |
| 71 | Williametta Albert | 21 | Daughter-in-law | — | California |
| 72 | Rodney F. Albert | 1 | Grandson | — | California |
| 73 | Anthony M. Silva | 58 | Head | — | California |
| 74 | Mary C. Silva | 60 | Wife | — | Azores Is. |
| 75 | Grace R. Ensign | 65 | Head | — | New York |
| 76 | Manuel Semos | 40 | Head | Laborer | California |
| 77 | Jennie E. Semos | 34 | Wife | Piece Worker | California |
| 78 | Hazel F. Semos | 18 | Daughter | — | California |
| 79 | Lester J. Semos | 8 | Son | — | California |
| 80 | Mary Goulart | 51 | Head | — | Azores Is. |
Pedigree Summary
Mary
Gen 1 · 1 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)