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Mary Lopez — 1940 US Census Record
Linked across censuses1940 United States Federal Census · New-York-County, New York
Our Model Tree links this Mary Lopez across the 1930 and 1940 US Censuses in New-York-County, New York (XGBoost, ~Confirmed) — first a head (b.~1895), then head of a 8-person household.
Age 45
b. ~1895
Female
Head
Born: AUSTRIA HUNGARY
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | New-York-County, New York |
| Surname | LOPEZ |
| Given Name | MARY |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | Black |
| Age | 45 |
| Marital Status | Married |
| Birthplace | AUSTRIA HUNGARY |
| 1935 Residence (City) | S. Place |
| 1935 Residence (County) | N. York |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | H |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| Birth Country | Austria-Hungary |
| Birthplace (normalized) | austria hungary |
| Occupation | H |
| Township / Ward | N York |
| 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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Lopez | Head | — | 45 | ~1895 |
| Elma Lopez | Daughter | — | 9 | ~1931 |
| Mary Lopez | Daughter | — | 11 | ~1929 |
| Alfred Lopez | Son | — | 13 | ~1927 |
| Frank Lopez | Son | — | 7 | ~1933 |
| Paul Lopez | Son | — | 19 | ~1921 |
| Pedro Lopez | Son | — | 15 | ~1925 |
| Carmen Lopez | Daughter | — | 20 | ~1920 |
Census Appearances
1930
New York, …
Spouse, age 35
New York, New York · implied b. ~1895 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lopez |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Austria Hungary |
| Naturalization Status | Alien |
| Year of Immigration | 1903 |
| Age at First Marriage | 20 |
| Father's Birthplace | Austria Hungary |
| Mother's Birthplace | Austria Hungary |
| Occupation | none |
| Can Read/Write | Yes |
| Mother Tongue | Bohemian |
| Birth Country | Austria-Hungary |
| Birthplace (normalized) | austria hungary |
1940
New-York-County, New …
Head, age 45
New-York-County, New York · implied b. ~1895 — 8 household members
| Surname | LOPEZ |
| Given Name | MARY |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | Black |
| Age | 45 |
| Marital Status | Married |
| Birthplace | AUSTRIA HUNGARY |
| 1935 Residence (City) | S. Place |
| 1935 Residence (County) | N. York |
| Naturalization Status | Naturalized |
| Occupation | H |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| Birth Country | Austria-Hungary |
| Birthplace (normalized) | austria hungary |
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 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Lopez
Head · 1940 · age 45 · b. ~1895 · New York
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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 — New-York-County, New York
Open full size
1940 US Federal Census — New-York-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02661-00386)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Alicia Carrion | 8 | Daughter | — | N. Y. City |
| 2 | Tomas Carrion | 7 | Son | — | N. Y. City |
| 3 | Magdalena Carrion | 2 | Daughter | — | N. Y. City |
| 4 | Steve Vonko | 38 | Head | Ot | East Germany |
| 5 | Raimenina Vonko | 39 | Wife | H | Boston Mass. |
| 6 | Lina Vonko | 20 | Daughter | New Worker | VIRGINIA |
| 7 | Tom Vonko | 17 | Son | S | VIRGINIA |
| 8 | Tenis Vonko | 15 | Son | S | N. Y. City |
| 9 | Steling Vonko | 13 | Son | — | Mt. Vernon |
| 10 | John Vonko | 12 | Son | — | Schenectady |
| 11 | Mary Vonko | 9 | Daughter | — | Schenectady |
| 12 | Patsy Vonko | 6 | Son | — | N. Y. City |
| 13 | Stevens Vonko | 4 | Son | — | Ossining |
| 14 | Alice Vonko | 2 | Daughter | — | N. Y. City |
| 15 | Bernardo Donato | 34 | Head | Laborer | Porto Rico |
| 16 | Ana Donato | 39 | Wife | H | Porto Rico |
| 17 | Bernardo Donato | 5 | Son | — | N. Y. City |
| 18 | Hector Donato | 3 | Son | — | N. Y. City |
| 19 | Nella Diaz | 16 | Daughter | S | N. Y. City |
| 20 | Celia Diaz | 15 | Daughter | S | N. Y. City |
| 21 | Rosa Diaz | 14 | Daughter | S | N. Y. City |
| 22 | Frank Diaz | 12 | Son | — | N. Y. City |
| 23 | Charles Banuchi | 28 | Head | Cook | Porto Rico |
| 24 | Juanita Santiago | 25 | Wife | H | Porto Rico |
| 25 | Maria Gonzalez | 30 | Lodger | New Worker | Porto Rico |
| 26 | Raul Gonzalez | 28 | Lodger | Laborer | Porto Rico |
| 27 | Lidia Banuchi | 1 | Daughter | — | N. Y. City |
| 28 | Manuel Banuchi | 0 | Son | — | N. Y. City |
| 29 | Harry Boykin | 34 | Head | Cook | S. Carolina |
| 30 | Mamie Boykin | 39 | Wife | H | VIRGINIA |
| 31 | Harry Boykin | 15 | Son | S | N. Y. City |
| 32 | Horace Boykin | 14 | Son | S | N. Y. City |
| 33 | Mary Lopez THIS PERSON | 45 | Head | H | AUSTRIA HUNGARY |
| 34 | Carmen Lopez | 20 | Daughter | Proof Reading | N. Y. City |
| 35 | Paul Lopez | 19 | Son | S | N. Y. City |
| 36 | Pedro Lopez | 15 | Son | S | N. Y. City |
| 37 | Alfred Lopez | 13 | Son | — | N. Y. City |
| 38 | Mary Lopez | 11 | Daughter | — | N. Y. City |
| 39 | Elma Lopez | 9 | Daughter | — | N. Y. City |
| 40 | Frank Lopez | 7 | Son | — | N. Y. City |
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)