MC
Mary Costa — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Bristol-County, Massachusetts
Our Model Tree links this Mary Costa across the 1920, 1930 and 1940 US Censuses in Bristol-County, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1896), then head of a 4-person household.
Age 44
b. ~1896
Female
Spouse
Born: Azores
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Bristol-County, Massachusetts |
| Surname | Costa |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Azores |
| 1935 Residence (City) | Fall River City |
| 1935 Residence (County) | Bristol |
| Naturalization Status | First papers filed |
| Additional Details | |
| Occupation | Spinner |
| Industry | Cotton mill |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 384 |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| Birth Country | Portugal |
| Birthplace (normalized) | azores |
| Occupation | Spinner |
| Township / Ward | Fall River City |
| Est. Birth Year | ~1896 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Costa | Spouse | — | 44 | ~1896 |
| Manuel Costa | Head | — | 36 | ~1904 |
| Joseph Costa | Son | — | 14 | ~1926 |
| Manuel Costa | Son | — | 15 | ~1925 |
Census Appearances
1920
Bristol, Massachusetts
Spouse, age 21
Bristol, Massachusetts · implied b. ~1899 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Costa |
| Given Name | Mary C. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Married |
| Birthplace | Azores |
| Year of Immigration | 1903 |
| Naturalization Status | Alien |
| Father's Birthplace | Azores |
| Mother's Birthplace | Azores |
| Occupation | Speed Tender |
| Industry | Cotton Mill |
| Class of Worker | W |
| Can Read | No |
| Can Write | No |
| Speaks English | No |
| Mother Tongue | Portuguese |
| Birth Country | Portugal |
| Birthplace (normalized) | azores |
1930
Bristol, Massachusetts
Spouse, age 32
Bristol, Massachusetts · implied b. ~1898 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Costa |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Azores |
| Naturalization Status | Naturalized |
| Year of Immigration | 1902 |
| Age at First Marriage | 16 |
| Father's Birthplace | Azores |
| Mother's Birthplace | Azores |
| Occupation | Spinner |
| Industry | Cotton Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Portuguese |
| Birth Country | Portugal |
| Birthplace (normalized) | azores |
1940
Bristol-County, Massachusetts
Spouse, age 44
Bristol-County, Massachusetts · implied b. ~1896 — 4 household members
| Surname | Costa |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Azores |
| 1935 Residence (City) | Fall River City |
| 1935 Residence (County) | Bristol |
| Naturalization Status | First papers filed |
| Occupation | Spinner |
| Industry | Cotton mill |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 384 |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| Birth Country | Portugal |
| Birthplace (normalized) | azores |
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 Costa across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Costa
Spouse · 1940 · age 44 · b. ~1896 · Massachusetts
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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 — Bristol-County, Massachusetts
Open full size
1940 US Federal Census — Bristol-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01688-00394)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Adelard Mongeau | 80 | Father | — | Canada-French |
| 2 | Ephraim Busquet | 37 | Head | Loom-Fixer | Massachusetts |
| 3 | Lillian Busquet | 34 | Wife | — | Massachusetts |
| 4 | Roland Busquet | 12 | Son | — | Massachusetts |
| 5 | Theresa Busquet | 10 | Daughter | — | Massachusetts |
| 6 | Loretta Busquet | 9 | Daughter | — | Massachusetts |
| 7 | Leo Bourque | 35 | Head | Loom-Fixer | Massachusetts |
| 8 | Jeanne Bourque | 31 | Wife | — | Massachusetts |
| 9 | Rita Bourque | 4 | Daughter | — | Rhode Island |
| 10 | Henry Bourque | 2 | Son | — | Massachusetts |
| 11 | Manuel Costa | 36 | Head | Yard-Man | Azores |
| 12 | Mary Costa THIS PERSON | 44 | Wife | Spinner | Azores |
| 13 | Manuel Costa | 15 | Son | — | Massachusetts |
| 14 | Joseph Costa | 14 | Son | — | Massachusetts |
| 15 | Albany De Leonardo | 34 | Head | Weaver | Azores |
| 16 | Marianna De Leonardo | 28 | Wife | Seamstress | Massachusetts |
| 17 | Joseph, Jr. De Leonardo | 30 | Brother | Laborer | Azores |
| 18 | Mary De Leonardo | 30 | Sister-in-law | Seamstress | Azores |
| 19 | Joseph Sr. De Leonardo | 69 | Father | — | Azores |
| 20 | Roger De Leonardo | 40 | Head | Weaver | Azores |
| 21 | Deolinda De Leonardo | 37 | Wife | Hand Sewer | Azores |
| 22 | Maria De Arruda | 68 | Head | — | Azores |
| 23 | John De Arruda | 39 | Son | Salesman | Massachusetts |
| 24 | Emma De Arruda | 33 | Daughter | Bookkeeper | Massachusetts |
| 25 | Adelada De Arruda | 29 | Daughter | — | Massachusetts |
| 26 | James De Arruda | 27 | Son | Salesman | Massachusetts |
| 27 | Theophile Boucher | 41 | Head | — | Canada-French |
| 28 | Marie A. Boucher | 43 | Daughter | Power Seamstress | Canada-French |
| 29 | Yvonne Boucher | 41 | Daughter | — | Canada-French |
| 30 | Marie Anne Metayer | 45 | Head | Proprietress | Canada-French |
| 31 | Jean B. Metayer | 53 | Brother | — | Massachusetts |
| 32 | Julia Pimentes | 31 | Head | Spinner | Massachusetts |
| 33 | Angela Pimentes | 14 | Niece | — | Massachusetts |
| 34 | John Pimentes | 9 | Nephew | — | Massachusetts |
| 35 | Manuel Ferreira | 37 | Head | Dofter | Massachusetts |
| 36 | Angela Ferreira | 37 | Wife | Spinner | Massachusetts |
| 37 | Madelon Ferreira | 17 | Daughter | — | Massachusetts |
| 38 | Alice Ferreira | 10 | Daughter | — | Massachusetts |
| 39 | John Ferreira | 9 | Son | — | Massachusetts |
| 40 | Manuel Raposa | 41 | Head | Dotter | Azores |
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)