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Mary Martin — 1920 US Census Record
Model Tree available1920 United States Federal Census · Alameda, California
Our Model Tree links this Mary Martin across the 1920, 1930 and 1940 US Censuses in Alameda, California (XGBoost, ~Confirmed), with identified parents Mary — first a spouse (b.~1902), then head of a 3-person household.
Age 18
b. ~1902
Female
Spouse
Born: Portugal
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | Alameda, California |
| Surname | Martin |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Married |
| Birthplace | Portugal |
| Year of Immigration | 1915 |
| Naturalization Status | Alien |
| Father's Birthplace | Portugal |
| Mother's Birthplace | Portugal |
| Additional Details | |
| Occupation | Spinner |
| Industry | Cotton Mill |
| Class of Worker | W |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Mother Tongue | Portuguese |
| Birth Country | Portugal |
| Birthplace (normalized) | portugal |
| Occupation | Spinner |
| Township / Ward | Oakland City |
| Est. Birth Year | ~1902 |
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 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Emily Martin | Daughter | — | 1 | ~1919 |
| Joe Martin | Head | — | 21 | ~1899 |
| Mary Martin | Spouse | — | 18 | ~1902 |
Census Appearances
1920
Alameda, California
Spouse, age 18
Alameda, California · implied b. ~1902 — 3 household members
| Surname | Martin |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Married |
| Birthplace | Portugal |
| Year of Immigration | 1915 |
| Naturalization Status | Alien |
| Father's Birthplace | Portugal |
| Mother's Birthplace | Portugal |
| Occupation | Spinner |
| Industry | Cotton Mill |
| Class of Worker | W |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Mother Tongue | Portuguese |
| Birth Country | Portugal |
| Birthplace (normalized) | portugal |
1930
Alameda, California
Daughter, age 29
Alameda, California · implied b. ~1901 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martins |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Portugal |
| Naturalization Status | Alien |
| Year of Immigration | 1915 |
| Father's Birthplace | Portugal |
| Mother's Birthplace | Portugal |
| Occupation | Laborer |
| Industry | Pickle Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Portuguese |
| Birth Country | Portugal |
| Birthplace (normalized) | portugal |
1940
Contra-Costa-County, California
Spouse, age 40
Contra-Costa-County, California · implied b. ~1900 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martins |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Portugal |
| 1935 Residence (City) | Rodeo |
| 1935 Residence (County) | Contra Costa |
| Naturalization Status | Naturalized |
| 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 Mary Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Mary Martins (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mary Martins
b. ~1873
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Martin
Spouse · 1920 · age 18 · b. ~1902 · California
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Alameda, California
Open full size
1920 US Federal Census — Alameda, California
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu090unit:0631)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joe Cambra | 44 | Head | Laborer | Hawaii |
| 2 | Virginia Cambra | 44 | Wife | Winder | Hawaii |
| 3 | Joe Cambra | 8 | Son | — | California |
| 4 | Mary Cambra | 6 | Daughter | — | California |
| 5 | John Cambra | 9 | Son | — | California |
| 6 | John Gomez | 42 | Head | Woodworker | Portugal |
| 7 | Virginia Gomez | 25 | Wife | — | Portugal |
| 8 | Jallum Santos | 29 | Head | Testing | Hawaii |
| 9 | Laura Santos | 23 | Wife | Spooler | California |
| 10 | Robert Santos | 4 | Son | — | California |
| 11 | Margaret Strange | 40 | Head | — | Texas |
| 12 | James Strange | 30 | Son | — | Texas |
| 13 | James Carstens | 72 | Head | — | England |
| 14 | Angelo Prata | 60 | Head | Retired | California |
| 15 | Angela Prata | 56 | Wife | Worker | Italy |
| 16 | Angelo Prata | 29 | Son | Painter | California |
| 17 | Ethel Prata | 23 | Daughter-in-law | — | California |
| 18 | Alice Perry | 29 | Head | Weaver | Portugal |
| 19 | Mary Gomes | 26 | Roomer | Weaver | Portugal |
| 20 | Carmello Algerio | 44 | Head | Worker | Spain |
| 21 | Carmella Algerio | 44 | Wife | — | Spain |
| 22 | Mary Algerio | 8 | Daughter | — | California |
| 23 | Rosie Algerio | 5 | Daughter | — | California |
| 24 | Joe Thomas | 35 | Head | Boilermaker | Portugal |
| 25 | Ida Thomas | 34 | Wife | Laundress | Portugal |
| 26 | Manuel Thomas | 12 | Son | — | Hawaii |
| 27 | Joe Thomas | 8 | Son | — | Hawaii |
| 28 | Louisa Gonzales | 30 | Head | Weaver | Portugal |
| 29 | Eva Gonzales | 13 | Daughter | — | Hawaii |
| 30 | Charles Gonzales | 11 | Son | — | Hawaii |
| 31 | Lydia Gonzales | 9 | Daughter | — | Hawaii |
| 32 | Mabel Gonzales | 7 | Daughter | — | Hawaii |
| 33 | George Gonzales | 5 | Son | — | Hawaii |
| 34 | Albert Gonzales | 0 | Son | — | California |
| 35 | Joe Martin | 21 | Head | Salesman | Portugal |
| 36 | Mary Martin THIS PERSON | 18 | Wife | Spinner | Portugal |
| 37 | Emily Martin | 1 | Daughter | — | California |
| 38 | John Williams | 33 | Head | Boilermaker | Hawaii |
| 39 | Helen Williams | 28 | Wife | Cashier | Hawaii |
| 40 | Jerry Williams | 6 | Son | — | Hawaii |
| 41 | Joe Williams | 4 | Son | — | Hawaii |
| 42 | Manuel Gomez | 51 | Head | Worker | Portugal |
| 43 | Constance Gomez | 49 | Wife | — | Portugal |
| 44 | Tony Rose | 34 | Head | Laborer | Hawaii |
| 45 | Clara Rose | 26 | Wife | — | Rhode Island |
| 46 | Willie Rose | 7 | Son | — | California |
| 47 | Eva Rose | 6 | Daughter | — | California |
| 48 | Laura Rose | 4 | Daughter | — | California |
| 49 | George Rose | 2 | Son | — | California |
| 50 | Tony Rose | 1 | Son | — | California |
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 1920 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)