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Mary Lopez — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Bristol-County, Massachusetts
Our Model Tree links this Mary Lopez across the 1920, 1930 and 1940 US Censuses in Bristol-County, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1895), then head of a 7-person household.
Age 45
b. ~1895
Female
Spouse
Born: Azores
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Bristol-County, Massachusetts |
| Surname | Lopez |
| Given Name | Mary A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Azores |
| 1935 Residence (City) | Taunton City |
| 1935 Residence (County) | Bristol |
| Naturalization Status | First papers filed |
| Additional Details | |
| Occupation | Housewife |
| Class of Worker | NP |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Portugal |
| Birthplace (normalized) | azores |
| Occupation | Housewife |
| Township / Ward | Taunton City |
| Est. Birth Year | ~1895 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Lopez | Spouse | — | 45 | ~1895 |
| Emily Lopez | Daughter | — | 2 | ~1938 |
| Mary Lopez | Daughter | — | 16 | ~1924 |
| Noel Lopez | Son | — | 18 | ~1922 |
| Margaret Lopez | Daughter | — | 13 | ~1927 |
| Manuel Lopez | Son | — | 20 | ~1920 |
| Estella Lopez | Daughter | — | 5 | ~1935 |
Census Appearances
1920
Bristol, Massachusetts
Spouse, age 23
Bristol, Massachusetts · implied b. ~1897 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lopes |
| Given Name | Mary H. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Azores |
| Year of Immigration | 1917 |
| Naturalization Status | Alien |
| Father's Birthplace | Azores |
| Mother's Birthplace | Azores |
| Can Read | No |
| Can Write | No |
| Speaks English | No |
| Mother Tongue | Portuguese |
| Birth Country | Portugal |
| Birthplace (normalized) | azores |
1930
Bristol, Massachusetts
Spouse, age 35
Bristol, Massachusetts · implied b. ~1895 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lopes |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Azores |
| Naturalization Status | Alien |
| Year of Immigration | 1915 |
| Age at First Marriage | 19 |
| Father's Birthplace | Azores |
| Mother's Birthplace | Azores |
| Occupation | none |
| Can Read/Write | Yes |
| Mother Tongue | Portuguese |
| Birth Country | Portugal |
| Birthplace (normalized) | azores |
1940
Bristol-County, Massachusetts
Spouse, age 45
Bristol-County, Massachusetts · implied b. ~1895 — 7 household members
| Surname | Lopez |
| Given Name | Mary A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Azores |
| 1935 Residence (City) | Taunton City |
| 1935 Residence (County) | Bristol |
| Naturalization Status | First papers filed |
| Occupation | Housewife |
| Class of Worker | NP |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 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 Lopez 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 Lopez
Spouse · 1940 · age 45 · b. ~1895 · 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-t0627-01574-00373)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary A. Lopez THIS PERSON | 45 | Wife | Housewife | Azores |
| 42 | Manuel Jr. Lopez | 20 | Son | Laborer | Mass |
| 43 | Noel Lopez | 18 | Son | Apprentice Carp. | Mass |
| 44 | Mary Lopez | 16 | Daughter | Housework | Mass |
| 45 | Margaret Lopez | 13 | Daughter | — | Mass |
| 46 | Estella Lopez | 5 | Daughter | — | Mass |
| 47 | Emily Lopez | 2 | Daughter | — | Mass |
| 48 | Gilbert Pierce | 56 | Head | Carpenter | Mass |
| 49 | Susie D. Pierce | 59 | Wife | Housewife | Mass |
| 50 | Arthur F. Pierce | 85 | Father | Retired | Mass |
| 51 | James Chipman | 88 | Uncle | Retired | Mass |
| 52 | Charles Lawlor | 42 | Head | Operator | Mass |
| 53 | Grace J. Lawlor | 36 | Wife | Housewife | Mass |
| 54 | Charles W. Lawlor | 10 | Son | — | Mass |
| 55 | Lawrence L. Lawlor | 8 | Son | — | Mass |
| 56 | Edmund Lawlor | 9 | Son | — | Mass |
| 57 | Grace J. Lawlor | 8 | Daughter | — | Mass |
| 58 | Janice Lawlor | 5 | Daughter | — | Mass |
| 59 | Neil R. Lawlor | 3 | Son | — | Mass |
| 60 | Russell D. Lawlor | 1 | Son | — | Mass |
| 61 | Harold Pierce | 41 | Head | Mechanic | Mass |
| 62 | Mildred E. Pierce | 43 | Wife | Housewife | Mass |
| 63 | Arlene L. Pierce | 17 | Daughter | Stenographer | Mass |
| 64 | Norma E. Pierce | 16 | Daughter | — | Mass |
| 65 | Frank Davis | 55 | Head | Machinist | England |
| 66 | George H. Bullock | 77 | Head | — | Illinois |
| 67 | Emma W. Bullock | 70 | Wife | Housewife | New Hampshire |
| 68 | Robert W. Francis | 27 | Head | Bookkeeper | Mass |
| 69 | Thelma A. Francis | 29 | Wife | Housewife | Mass |
| 70 | Velma Francis | 4 | Daughter | — | Mass |
| 71 | Elmer A. Horton | 40 | Head | Driver | Mass |
| 72 | Mildred L. Horton | 41 | Wife | Housewife | Mass |
| 73 | Lucille Horton | 16 | Daughter | — | Mass |
| 74 | Phyllis Horton | 13 | Daughter | — | Mass |
| 75 | Frank Jr. Alvarado | 31 | Head | Light Miller | Mass |
| 76 | Rita A. Alvarado | 23 | Wife | Housewife | Mass |
| 77 | Cecile Carreaux | 19 | Sister-in-law | Seamstress | Mass |
| 78 | Marcia A. Hollis | 79 | Head | Housewife | Illinois |
| 79 | Isaac C. Randall | 68 | Brother | Milker | Illinois |
| 80 | Robert H. Lincoln | 49 | Head | Proprietor | Mass |
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)