MD
Mary Decker — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hudson-County, New Jersey
Our Model Tree links this Mary Decker across the 1930 and 1940 US Censuses in Hudson-County, New Jersey (XGBoost, ~Confirmed) — first a daughter (b.~1920), then head of a 7-person household.
Age 20
b. ~1920
Female
Daughter
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hudson-County, New Jersey |
| Surname | Decker |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Hoboken City |
| 1935 Residence (County) | Hudson |
| Additional Details | |
| Occupation | Stenographer |
| Industry | Soaps |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 236 |
| Highest Grade | H 4 |
| 1935 Residence | Same Place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Stenographer |
| Township / Ward | Hoboken City |
| Est. Birth Year | ~1920 |
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 |
|---|---|---|---|---|
| Robert Scott | Son | — | 20 | ~1920 |
| Joseph Lawlor | Son | — | 7 | ~1933 |
| Lucy Miller | Daughter | — | 9 | ~1931 |
| Elizabeth Klimaska | Spouse | — | 39 | ~1901 |
| Loretta Decker | Daughter | — | 23 | ~1917 |
| Mary Decker | Daughter | — | 20 | ~1920 |
| Joseph Canning | Other | — | 56 | ~1884 |
Census Appearances
1930
Hudson, New …
Daughter, age 10
Hudson, New Jersey · implied b. ~1920 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Decker |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Hudson-County, New …
Daughter, age 20
Hudson-County, New Jersey · implied b. ~1920 — 7 household members
| Surname | Decker |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Hoboken City |
| 1935 Residence (County) | Hudson |
| Occupation | Stenographer |
| Industry | Soaps |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 236 |
| Highest Grade | H 4 |
| 1935 Residence | Same Place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
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 Decker across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Decker
Daughter · 1940 · age 20 · b. ~1920 · New Jersey
★ You are viewing this record
Sibling
Lucy Miller
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Lawlor
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Scott
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Loretta Decker
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
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
35 people indexed on this census page (nara:1940:m-t0627-02349-00671)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joseph Jr. Lawlor | 7 | Son | — | New Jersey |
| 2 | Robert Scott | 20 | Son | Inspector | New Jersey |
| 3 | Lucy Miller | 9 | Daughter | — | Germany |
| 4 | Joseph Canning | 56 | Brother | — | New Jersey |
| 5 | Elizabeth Klimaska | 39 | Wife | — | Belgium |
| 6 | Loretta Decker | 23 | Daughter | Stenographer | New Jersey |
| 7 | Mary Decker THIS PERSON | 20 | Daughter | Stenographer | New Jersey |
| 8 | Frank Scattareggia | 50 | Head | Proprietor | Italy |
| 9 | Rose Scattareggia | 46 | Wife | Seamstress | Italy |
| 10 | Mae Scattareggia | 24 | Daughter | Seamstress | New Jersey |
| 11 | Sam Scattareggia | 23 | Son | — | New Jersey |
| 12 | Amelia Brunjes | 51 | Head | Proprietor | New York |
| 13 | Herbert Brunjes | 28 | Son | — | New York |
| 14 | Adolph Schmid | 49 | Lodger | Proprietor | Germany |
| 15 | Adolph Jr. Schmid | 22 | Lodger | Chef | New York |
| 16 | William Schbner | 47 | Lodger | Stock Clerk | New Jersey |
| 17 | Hans Mangelson | 35 | Lodger | Waiter | Germany |
| 18 | Fred Faber | 40 | Lodger | Waiter | Germany |
| 19 | Dudley Muller | 26 | Lodger | Laborer | New York |
| 20 | Margaret Bischer | 81 | Head | — | Pennsylvania |
| 21 | Della Sessoms | 54 | Daughter | Winder | New York |
| 22 | George Sessoms | 35 | Grandson | Mach. Maint. Helper | New York |
| 23 | Margaret Groescake | 56 | Head | — | Pennsylvania |
| 24 | Estelle Groescake | 27 | Daughter | Clerk | New York |
| 25 | Arnold Schneider | 37 | Head | Machine Operator | Austria |
| 26 | Marie Schneider | 30 | Wife | Secretary | Italy |
| 27 | John Fucito | 37 | Head | Proprietor | Italy |
| 28 | Mildred Fucito | 36 | Wife | — | New York |
| 29 | Jane M. Fucito | 3 | Daughter | — | New Jersey |
| 30 | Ralph Fucito | 42 | Head | Machine Operator | Italy |
| 31 | Theresa Fucito | 37 | Sister | Operator | Italy |
| 32 | Carl Pohr | 61 | Head | Merchant Marine | Germany |
| 33 | Frederick Glenny | 5 | Son | — | Scotland |
| 34 | Theodor Mahnke | 19 | Son | Pantryman | Germany |
| 35 | John Shannon | 43 | Head | Laborer | 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)