MK
Mary Kaufman — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hudson-County, New Jersey
Our Model Tree links this Mary Kaufman across the 1920, 1930 and 1940 US Censuses in Hudson-County, New Jersey (XGBoost, ~Confirmed) — first a spouse (b.~1879), then head of a 4-person household.
Age 61
b. ~1879
Female
Spouse
Born: New York
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Hudson-County, New Jersey |
| Surname | KAUFMAN |
| Given Name | MARY |
| Relationship to Head | WIFE |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | Jersey City |
| 1935 Residence (County) | Hudson |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Township / Ward | Jersey City |
| Est. Birth Year | ~1879 |
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 |
|---|---|---|---|---|
| Charles Kaufman | Head | — | 64 | ~1876 |
| Charles Kaufman | Son | — | 36 | ~1904 |
| Mary Kaufman | Spouse | — | 61 | ~1879 |
| Walter Kaufman | Son | — | 39 | ~1901 |
Census Appearances
1920
Hudson, New …
Spouse, age 41
Hudson, New Jersey · implied b. ~1879 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kaufmann |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | New York |
| Father's Birthplace | Germany |
| Mother's Birthplace | Wurtemberg |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
Hudson, New …
Spouse, age 51
Hudson, New Jersey · implied b. ~1879 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kaufmann |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | New York |
| Age at First Marriage | 21 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Hudson-County, New …
Spouse, age 61
Hudson-County, New Jersey · implied b. ~1879 — 4 household members
| Surname | KAUFMAN |
| Given Name | MARY |
| Relationship to Head | WIFE |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | Jersey City |
| 1935 Residence (County) | Hudson |
| Highest Grade | No 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 Kaufman 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 Kaufman
Spouse · 1940 · age 61 · b. ~1879 · New Jersey
★ 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 — Hudson-County, New Jersey
Open full size
1940 US Federal Census — Hudson-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02411-00122)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Herman Kraeft | 40 | HEAD | — | Germany |
| 42 | Bertha Kraeft | 50 | WIFE | Machine Oper | New Jersey |
| 43 | Walter Kraeft | 40 | SON | Machinist | New Jersey |
| 44 | Helen Kraeft | 33 | WIFE | — | New Jersey |
| 45 | Helen Kraeft | 5 | DAU | — | New Jersey |
| 46 | Marilyn Kraeft | 1 | DAU | — | New Jersey |
| 47 | Ferdinand Nabel | 65 | HEAD | Barge Capt | Germany |
| 48 | Anna Nabel | 63 | WIFE | — | Switzerland |
| 49 | Peter Morissens | 47 | HEAD | Diamond Cutter | Belgium |
| 50 | Henrietta Morissens | 46 | WIFE | — | New Jersey |
| 51 | Frank Bare | 29 | HEAD | Salesman | New Jersey |
| 52 | Mildred Bare | 25 | WIFE | Policy Writer | New Jersey |
| 53 | Lilly Kleinman | 32 | HEAD | Embroider | Washington |
| 54 | Anna Kleinman | 45 | SISTER | Embroider | Washington |
| 55 | Anthony Ferro | 28 | HEAD | Fly Boy | New York |
| 56 | Margaret Ferro | 24 | WIFE | — | Maine |
| 57 | Marie Ferro | 4 | DAU | — | New York |
| 58 | Leo Cohen | 35 | HEAD | Truck Driver | New York |
| 59 | Ida Cohen | 35 | WIFE | — | New York |
| 60 | Theodore Cohen | 13 | SON | — | New York |
| 61 | Donald Cohen | 10 | SON | — | New Jersey |
| 62 | Abraham Silverstein | 60 | HEAD | Cap Maker | Russia |
| 63 | Anna Silverstein | 60 | WIFE | — | Russia |
| 64 | Leo Silverstein | 30 | SON | Bookkeeper | New York |
| 65 | Lillian Silverstein | 27 | DAU | — | New York |
| 66 | Samuel Silverstein | 26 | SON | — | New Jersey |
| 67 | Robert Silverstein | 24 | SON | Teacher | New Jersey |
| 68 | Bernard Silverstein | 22 | SON | Shoe Salesman | New Jersey |
| 69 | Pearl Silverstein | 19 | DAU | Bookkeeper | New Jersey |
| 70 | Charles Finch | 69 | HEAD | — | New York |
| 71 | Elizabeth Finch | 60 | WIFE | — | New York |
| 72 | Clarence Finch | 35 | HEAD | Coal Man | New Jersey |
| 73 | Elsie Finch | 31 | WIFE | — | New Jersey |
| 74 | Clarence Finch | 5 | SON | — | New Jersey |
| 75 | Mabel Finch | 12 | DAU | — | New Jersey |
| 76 | — | None | — | — | New Jersey |
| 77 | Charles Kaufman | 64 | HEAD | Butcher | New Jersey |
| 78 | Mary Kaufman THIS PERSON | 61 | WIFE | — | New York |
| 79 | Walter Kaufman | 39 | SON | Bus Driver | New Jersey |
| 80 | Charles Jr. Kaufman | 36 | SON | Butcher | New Jersey |
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)