MJ
Mary Jacobs — 1940 US Census Record
Model Tree available1940 United States Federal Census · Kings-County, New York
Our Model Tree links this Mary Jacobs across the 1920, 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed), with identified parents Nelson & Catherine — first a spouse (b.~1908), then head of a 4-person household.
Age 32
b. ~1908
Female
Spouse
Born: New York
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Kings-County, New York |
| Surname | Jacobs |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Additional Details | |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Township / Ward | New York City |
| Est. Birth Year | ~1908 |
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 |
|---|---|---|---|---|
| Leona Jacobs | Daughter | — | 7 | ~1933 |
| Ruth Jacobs | Daughter | — | 2 | ~1938 |
| Abraham Jacobs | Head | — | 37 | ~1903 |
| Mary Jacobs | Spouse | — | 32 | ~1908 |
Census Appearances
1920
Kings, New …
Daughter, age 12
Kings, New York · implied b. ~1908 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jacobs |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | New York |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
Kings, New …
Daughter, age 22
Kings, New York · implied b. ~1908 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jacobs |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | New York |
| Occupation | Typist |
| Industry | Religion |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Kings-County, New …
Spouse, age 32
Kings-County, New York · implied b. ~1908 — 4 household members
| Surname | Jacobs |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
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 Jacobs across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Nelson Jacobs (~0.92 confidence) and mother Catherine Jacobs (~0.92 confidence) and mother Catherine Jacobs (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Nelson Jacobs
b. ~1877
Source father
● Household
· direct · ~0.92
Mother
Catherine Jacobs
b. ~1879
Source mother
● Household
· direct · ~0.92
Mother
Catherine Jacobs
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Jacobs
Spouse · 1940 · age 32 · b. ~1908 · New York
★ 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 — Kings-County, New York
Open full size
1940 US Federal Census — Kings-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02601-00875)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Edna White | 20 | Daughter | Apprentice | New York |
| 2 | Edith White | 17 | Daughter | — | New York |
| 3 | Sam Goldstein | 31 | Head | Chauffeur | New York |
| 4 | Rose Goldstein | 29 | Wife | — | New York |
| 5 | Lila Goldstein | 9 | Daughter | — | New York |
| 6 | Barbara Goldstein | 3 | Daughter | — | New York |
| 7 | Morris Boardman | 53 | Head | Carpenter | Russia |
| 8 | Bessie Boardman | 50 | Wife | — | Russia |
| 9 | Martin Boardman | 13 | Son | — | New York |
| 10 | Julius Schulman | 37 | Head | Factory Worker | New York |
| 11 | Sheba Schulman | 30 | Wife | Knitter | New Jersey |
| 12 | Don Schulman | 2 | Son | — | New York |
| 13 | Sol Schwartz | 32 | Head | Agent | New York |
| 14 | Rose Schwartz | 23 | Wife | — | New York |
| 15 | Linda Schwartz | 1 | Daughter | — | New York |
| 16 | Samuel Alberts | 44 | Head | Salesman | New York |
| 17 | Flora Alberts | 42 | Wife | — | New York |
| 18 | Adeline Alberts | 15 | Daughter | — | New York |
| 19 | Celia Cutler | 47 | Head | — | Russia |
| 20 | Harold Felcher | 25 | Son | Engineer | New York |
| 21 | Dorothy Cutler | 19 | Daughter | Bookkeeper | New York |
| 22 | Murray Tripolsky | 35 | Head | Salesman | Russia |
| 23 | Stella Tripolsky | 30 | Wife | — | New York |
| 24 | Donald Tripolsky | 9 | Son | — | New York |
| 25 | Abraham Jacobs | 37 | Head | Retail Store | New York |
| 26 | Mary Jacobs THIS PERSON | 32 | Wife | — | New York |
| 27 | Leona Jacobs | 7 | Daughter | — | New York |
| 28 | Ruth Jacobs | 2 | Daughter | — | New York |
| 29 | Rebecca Shocoff | 74 | Head | — | Russia |
| 30 | Celia Festinger | 41 | Boarder | — | Poland |
| 31 | Jean Festinger | 17 | Boarder | — | New York |
| 32 | Samuel Elzer | 64 | Head | Moving Van | Russia |
| 33 | Esther Elzer | 60 | Wife | — | Poland |
| 34 | Muriel Elzer | 25 | Daughter | Typist | New York |
| 35 | Lila Elzer | 19 | Daughter | Salesman | New York |
| 36 | Kober Thaler | 48 | Head | Owner | Austria |
| 37 | Esther Thaler | 50 | Wife | — | Russia |
| 38 | Harold Thaler | 15 | Son | — | New York |
| 39 | Peter Galburt | 32 | Head | Truck Driver | New York |
| 40 | Betty Galburt | 31 | Wife | — | New York |
Pedigree Summary
Mary
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)