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William Dempsey — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Essex-County, New Jersey
Our Model Tree links this William Dempsey across the 1930 and 1940 US Censuses in Essex-County, New Jersey (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 5-person household.
Age 17
b. ~1923
Male
Son
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, New Jersey |
| Surname | Dempsey |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Newark |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Occupation | Paper Boy |
| Industry | Newspaper factory |
| Class of Worker | PW |
| Hours Worked | 3 |
| Income (1939) | 84 |
| Highest Grade | 8 |
| 1935 Residence | Same Place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Paper Boy |
| Township / Ward | Newark |
| Est. Birth Year | ~1923 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Harold Dempsey | Son | — | 19 | ~1921 |
| Florence Dempsey | Daughter | — | 25 | ~1915 |
| William Dempsey | Son | — | 17 | ~1923 |
| Elizabeth Dempsey | Daughter | — | 13 | ~1927 |
| Elizabeth Dempsey | Head | — | 50 | ~1890 |
Census Appearances
1930
Essex, New …
Son, age 7
Essex, New Jersey · implied b. ~1923 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dempsey |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Essex-County, New …
Son, age 17
Essex-County, New Jersey · implied b. ~1923 — 5 household members
| Surname | Dempsey |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Newark |
| 1935 Residence (County) | Essex |
| Occupation | Paper Boy |
| Industry | Newspaper factory |
| Class of Worker | PW |
| Hours Worked | 3 |
| Income (1939) | 84 |
| Highest Grade | 8 |
| 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 William Dempsey across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Dempsey
Son · 1940 · age 17 · b. ~1923 · New Jersey
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Sibling
Elizabeth Dempsey
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harold Dempsey
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Florence Dempsey
Sibling · 1940 · age 25
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 — Essex-County, New Jersey
Open full size
1940 US Federal Census — Essex-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02428-00306)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Jean Lewandowski | 25 | Daughter | Presser | New Jersey |
| 2 | Camilla Lewandowski | 24 | Daughter | Presser | New Jersey |
| 3 | Helen Lewandowski | 22 | Daughter | Stenographer | New Jersey |
| 4 | James Muravch | 40 | Head | Machinist | England |
| 5 | Elsie Muravch | 39 | Wife | — | New Jersey |
| 6 | James Muravch | 16 | Son | — | New Jersey |
| 7 | Elizabeth Warren | 38 | Head | Housekeeper | Scotland |
| 8 | James Warren | 15 | Son | — | New Jersey |
| 9 | Gilbert Warren | 12 | Son | — | New Jersey |
| 10 | Ruben Christ | 48 | Lodger | Salesman | New York |
| 11 | Frederick Oliver | 31 | Head | Tester | New York |
| 12 | Bernice D. Oliver | 27 | Wife | — | New York |
| 13 | Francis Smith | 42 | Head | Truck Driver | New Jersey |
| 14 | Frances Smith | 35 | Wife | — | New Jersey |
| 15 | Jane Smith | 12 | Daughter | — | New Jersey |
| 16 | William Smith | 11 | Son | — | New Jersey |
| 17 | Alexander Lismowski | 29 | Head | Shipping Clerk | New Jersey |
| 18 | Julia Lismowski | 27 | Wife | — | New Jersey |
| 19 | Charles Lee | 32 | Head | Machinist | Rhode Island |
| 20 | Marion Lee | 24 | Wife | — | New Jersey |
| 21 | Charles Lee | 5 | Son | — | New Jersey |
| 22 | Anna Garber | 64 | Head | — | Hungary |
| 23 | Samuel Garber | 40 | Son | Truck Driver | New Jersey |
| 24 | Stella Garber | 30 | Daughter | — | New Jersey |
| 25 | Jack Garber | 13 | Grandson | — | New Jersey |
| 26 | Geraldine Garber | 12 | Daughter | — | New Jersey |
| 27 | Samuel Lustig | 62 | Lodger | Salesman | Austria |
| 28 | George R. D. Spain | 31 | Head | Service Clerk | New Jersey |
| 29 | Edith Spain | 26 | Wife | — | New Jersey |
| 30 | Frederick Spain | 2 | Son | — | New Jersey |
| 31 | Harry A. Spain | 1 | Son | — | New Jersey |
| 32 | Elizabeth Dempsey | 50 | Head | — | New Jersey |
| 33 | Florence Dempsey | 25 | Daughter | — | New Jersey |
| 34 | Harold Dempsey | 19 | Son | Assembler | New Jersey |
| 35 | William Dempsey THIS PERSON | 17 | Son | Paper Boy | New Jersey |
| 36 | Elizabeth Dempsey | 13 | Daughter | — | New Jersey |
| 37 | Frances Buhl | 55 | Head | — | New Jersey |
| 38 | Fred Buhl | 37 | Son | Typist | New Jersey |
| 39 | William Buhl | 29 | Son | Purchasing Agent | New Jersey |
| 40 | Geraldine Buhl | 19 | Daughter | Saleswoman | 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)