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 head (b.~1873), then head of a 2-person household.
Age 67
b. ~1873
Female
Head
Born: Azores
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Bristol-County, Massachusetts |
| Surname | Costa |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 67 |
| Marital Status | Widowed |
| Birthplace | Azores |
| 1935 Residence (City) | New Bedford |
| 1935 Residence (County) | Bristol |
| Naturalization Status | Alien |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | 0 |
| 1935 Residence | Same place |
| Birth Country | Portugal |
| Birthplace (normalized) | azores |
| Township / Ward | New Bedford |
| Est. Birth Year | ~1873 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Costa | Daughter | — | 39 | ~1901 |
| Mary Costa | Head | — | 67 | ~1873 |
Census Appearances
1920
Bristol, Massachusetts
Head, age 48
Bristol, Massachusetts · implied b. ~1872 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Costa |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 48 |
| Marital Status | Widowed |
| Birthplace | Azores |
| Year of Immigration | 1900 |
| Naturalization Status | Alien |
| Father's Birthplace | Azores |
| Mother's Birthplace | Azores |
| Occupation | Spooler |
| Industry | Rope factory |
| Class of Worker | W |
| Can Read | No |
| Can Write | No |
| Speaks English | No |
| Mother Tongue | Portuguese |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth Country | Portugal |
| Birthplace (normalized) | azores |
1930
Bristol, Massachusetts
Head, age 57
Bristol, Massachusetts · implied b. ~1873
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Costa |
| Given Name | Mary |
| Relationship to Head | head |
| Sex | F |
| Color / Race | White |
| Age | 57 |
| Marital Status | Widowed |
| Birthplace | Azores |
| Naturalization Status | Alien |
| Year of Immigration | 1901 |
| Father's Birthplace | Azores |
| Mother's Birthplace | Azores |
| Occupation | Spinner |
| Industry | Cotton Mill |
| Class of Worker | W |
| Can Read/Write | No |
| Mother Tongue | Portuguese |
| Home Owned/Rented | O |
| Home Value / Rent | 1600 |
| Birth Country | Portugal |
| Birthplace (normalized) | azores |
1940
Bristol-County, Massachusetts
Head, age 67
Bristol-County, Massachusetts · implied b. ~1873 — 2 household members
| Surname | Costa |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 67 |
| Marital Status | Widowed |
| Birthplace | Azores |
| 1935 Residence (City) | New Bedford |
| 1935 Residence (County) | Bristol |
| Naturalization Status | Alien |
| Class of Worker | 0 |
| Highest Grade | 0 |
| 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.
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This person
Anchor record
Mary Costa
Head · 1940 · age 67 · b. ~1873 · Massachusetts
★ 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 — 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-t0627-01700-00668)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Frank Gomes | 9 | Son | — | Massachusetts |
| 42 | Joseph Gomes | 18 | Son | Laborer | Massachusetts |
| 43 | John Gomes | 70 | Son | Slubber Tender | Cape Verde Islan |
| 44 | Joaquim Nascimento | 49 | Head | Housework | Cape Verde Islan |
| 45 | Clara Nascimento | 41 | Wife | — | Cape Verde Islan |
| 46 | Mary Nascimento | 21 | Daughter | — | Massachusetts |
| 47 | Elizabeth Nascimento | 19 | Daughter | — | Massachusetts |
| 48 | Edwin Nascimento | 17 | Daughter | — | Massachusetts |
| 49 | Arthur Nascimento | 16 | Son | — | Massachusetts |
| 50 | Lillian Nascimento | 15 | Daughter | — | Massachusetts |
| 51 | Walter Nascimento | 10 | Son | — | Massachusetts |
| 52 | Irene Nascimento | 7 | Daughter | — | Massachusetts |
| 53 | Stella Nascimento | 3 | Daughter | — | Massachusetts |
| 54 | Joseph Vieira | 40 | Head | Painter | Azores |
| 55 | Mary Vieira | 36 | Wife | Spinner | Azores |
| 56 | John Wheeler | 62 | Head | Shipper | Massachusetts |
| 57 | John Medeiros | 53 | Head | Weaver | Azores |
| 58 | Mary Medeiros | 53 | Wife | — | Azores |
| 59 | Mary Costa THIS PERSON | 67 | Head | — | Azores |
| 60 | Mary Costa | 39 | Daughter | Speeder Tender | Azores |
| 61 | Philomena Ferreira | 73 | Head | — | Azores |
| 62 | Antone Souza | 54 | Head | Twister Tender | Azores |
| 63 | Phoebe Souza | 48 | Wife | — | Massachusetts |
| 64 | Anthony Souza | 26 | Son | Roving Man | Massachusetts |
| 65 | Mary Gloria | 72 | Head | — | Azores |
| 66 | Manuel Cardoza | 45 | Head | Truck Driver | Massachusetts |
| 67 | Mary Cardoza | 44 | Wife | — | Massachusetts |
| 68 | Anthony Cardoza | 15 | Son | Salesman | Massachusetts |
| 69 | George Cardoza | 17 | Son | Helper | Massachusetts |
| 70 | Alexander Perry | 49 | Head | Baker | Scotland |
| 71 | Agatha Perry | 32 | Wife | — | Massachusetts |
| 72 | Alexander Perry | 9 | Son | — | Massachusetts |
| 73 | James Perry | 7 | Son | — | Massachusetts |
| 74 | Almerinda Correia | 74 | Head | — | Azores |
| 75 | Manuel Perry | 63 | Head | Laborer | Azores |
| 76 | Anna Perry | 62 | Wife | — | Azores |
| 77 | Annie Curry | 55 | Head | — | Massachusetts |
| 78 | Thomas Curry | 20 | Son | Salesman | Massachusetts |
| 79 | Louis Santos | 57 | Head | Tinsmith | Cape Verde Islan |
| 80 | Laura Santos | 50 | Wife | Cloth Inspector | Cape Verde Islan |
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)