MG
Mary Garcia — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Alameda-County, California
Our Model Tree links this Mary Garcia across the 1930 and 1940 US Censuses in Alameda-County, California (XGBoost, ~Confirmed) — first a spouse (b.~1910), then head of a 9-person household.
Age 30
b. ~1910
Female
Spouse
Born: Hawaii
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Alameda-County, California |
| Surname | Garcia |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Hawaii |
| 1935 Residence (City) | Decoto |
| 1935 Residence (County) | Alameda |
| Additional Details | |
| Industry | 200 |
| Highest Grade | No 7 |
| 1935 Residence | Same house |
| Birth State | Hawaii |
| Birth Country | United States |
| Birthplace (normalized) | hawaii |
| Township / Ward | Decoto |
| Est. Birth Year | ~1910 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Joseph Garcia | Son | — | 12 | ~1928 |
| Betty Garcia | Daughter | — | 4 | ~1936 |
| John Garcia | Son | — | 6 | ~1934 |
| Eleanor Garcia | Daughter | — | 2 | ~1938 |
| Mary Garcia | Daughter | — | 8 | ~1932 |
| Thomas Garcia | Son | — | 10 | ~1930 |
| Mary Garcia | Spouse | — | 30 | ~1910 |
| Christopher Garcia | Son | — | 14 | ~1926 |
| John Garcia | Head | — | 35 | ~1905 |
Census Appearances
1930
Alameda, California
Spouse, age 22
Alameda, California · implied b. ~1908 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Garcia |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Married |
| Birthplace | Hawaii |
| Age at First Marriage | 19 |
| Father's Birthplace | Porto Rico |
| Mother's Birthplace | Porto Rico |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Hawaii |
| Birth Country | United States |
| Birthplace (normalized) | hawaii |
1940
Alameda-County, California
Spouse, age 30
Alameda-County, California · implied b. ~1910 — 9 household members
| Surname | Garcia |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Hawaii |
| 1935 Residence (City) | Decoto |
| 1935 Residence (County) | Alameda |
| Industry | 200 |
| Highest Grade | No 7 |
| 1935 Residence | Same house |
| Birth State | Hawaii |
| Birth Country | United States |
| Birthplace (normalized) | hawaii |
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 Garcia across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Garcia
Spouse · 1940 · age 30 · b. ~1910 · 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
40 people indexed on this census page (nara:1940:m-t0627-00191-00517)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Benito Benitez | 36 | Head | Laborer | Mexico |
| 2 | Julia Benitez | 35 | Wife | — | Mexico |
| 3 | Esteban Paniagua | 59 | Head | Laborer | Spain |
| 4 | Antoinette Paniagua | 22 | Daughter | — | California |
| 5 | Henrietta Paniagua | 20 | Daughter | Canner | California |
| 6 | Katherine Boliba | 29 | Head | — | Spain |
| 7 | John Boliba | 10 | Son | — | California |
| 8 | Jimmy Boliba | 5 | Son | — | California |
| 9 | Marlene Boliba | 4 | Daughter | — | California |
| 10 | Vicente Vergonciano | 59 | Head | — | Spain |
| 11 | Mary Vergonciano | 21 | Daughter | Cutter | California |
| 12 | Rudolf Vergonciano | 1 | Grandson | — | California |
| 13 | Frances Vergonciano | 17 | Daughter | — | California |
| 14 | Peter Vergonciano | 19 | Son | Laborer | California |
| 15 | Victoria Watkins | 23 | Daughter | — | California |
| 16 | Lawrence Watkins | 2 | Grandson | — | California |
| 17 | Kenneth Watkins | 1 | Grandson | — | California |
| 18 | Walter M. Watkins | 62 | Head | — | Illinois |
| 19 | Annie Watkins | 65 | Wife | — | Arkansas |
| 20 | George Watkins | 39 | Son | Laborer | Arkansas |
| 21 | Clifford Watkins | 33 | Son | Laborer | Arkansas |
| 22 | Donald Brett Watkins | 21 | Son | Laborer | Arkansas |
| 23 | Eileen Watkins | 17 | Daughter | Cutter | Arkansas |
| 24 | John Garcia | 35 | Head | Laborer | Spain |
| 25 | Mary Garcia THIS PERSON | 30 | Wife | — | Hawaii |
| 26 | Christopher Garcia | 14 | Son | — | California |
| 27 | Joseph Garcia | 12 | Son | — | California |
| 28 | Thomas Garcia | 10 | Son | — | California |
| 29 | Mary Garcia | 8 | Daughter | — | California |
| 30 | John Garcia | 6 | Son | — | California |
| 31 | Betty Garcia | 4 | Daughter | — | California |
| 32 | Eleanor Garcia | 2 | Daughter | — | California |
| 33 | Jessie Martinez | 67 | Head | — | Mexico |
| 34 | Miles Martinez | 22 | Son | Laborer | California |
| 35 | Joe Martinez | 20 | Son | Laborer | California |
| 36 | Joe Martinez | 5 | Grandson | — | California |
| 37 | Tomas Jimenez Garcia | 46 | Head | Laborer | Spain |
| 38 | Claudia Garcia | 33 | Wife | — | Spain |
| 39 | Gregorio Garcia | 17 | Son | — | California |
| 40 | Victoria Garcia | 16 | Daughter | — | California |
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)