JC
John Coffey — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Essex-County, New Jersey
Our Model Tree links this John Coffey across the 1930 and 1940 US Censuses in Essex-County, New Jersey (XGBoost, ~Confirmed) — first a son (b.~1921), then head of a 8-person household.
Age 19
b. ~1921
Male
Son
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, New Jersey |
| Surname | Coffey |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Newark |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Occupation | Cabinet-Maker |
| Industry | Furniture |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 366 |
| Highest Grade | No 8 |
| 1935 Residence | New Jersey |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Cabinet-Maker |
| Township / Ward | Newark City |
| Est. Birth Year | ~1921 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Marie Coffey | Daughter | — | 19 | ~1921 |
| Edward Coffey | Son | — | 11 | ~1929 |
| Martin Coffey | Son | — | 7 | ~1933 |
| Patricia Coffey | Daughter | — | 3 | ~1937 |
| William Coffey | Son | — | 11 | ~1929 |
| John Coffey | Son | — | 19 | ~1921 |
| Edward Coffey | Head | — | 37 | ~1903 |
| Mary Coffey | Spouse | — | 42 | ~1898 |
Census Appearances
1930
Essex, New …
Son, age 10
Essex, New Jersey · implied b. ~1920 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Caffey |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | Canada-French |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Essex-County, New …
Son, age 19
Essex-County, New Jersey · implied b. ~1921 — 8 household members
| Surname | Coffey |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Newark |
| 1935 Residence (County) | Essex |
| Occupation | Cabinet-Maker |
| Industry | Furniture |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 366 |
| Highest Grade | No 8 |
| 1935 Residence | New Jersey |
| 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 John Coffey across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Coffey
Son · 1940 · age 19 · b. ~1921 · New Jersey
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Sibling
William Coffey
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Coffey
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marie Coffey
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Coffey
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Martin Coffey
Sibling · 1940 · age 7
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-t0627-02422-00447)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Anna Stancel | 65 | Mother-in-law | — | Austria |
| 2 | George Hemmer | 37 | Head | Box-Maker | New Jersey |
| 3 | Clue Hemmer | 34 | Wife | — | New Jersey |
| 4 | George Hemmer | 13 | Son | — | New Jersey |
| 5 | Donald Hemmer | 8 | Son | — | New Jersey |
| 6 | Martin Degessis | 49 | Head | Operator | Lithuania |
| 7 | Anastasia Degessis | 43 | Wife | — | Poland |
| 8 | James Degessis | 22 | Son | Laborer | New Jersey |
| 9 | Edward Degessis | 15 | Son | — | New Jersey |
| 10 | Dorothy Degessis | 10 | Daughter | — | New Jersey |
| 11 | Herbert Degessis | 2 | Son | — | New Jersey |
| 12 | Edward Coffey | 37 | Head | Laborer | England |
| 13 | Mary Coffey | 42 | Wife | — | England |
| 14 | John Coffey THIS PERSON | 19 | Son | Cabinet-Maker | New Jersey |
| 15 | Marie Coffey | 19 | Daughter | Band-Maker | New Jersey |
| 16 | Edward Coffey | 11 | Son | — | New Jersey |
| 17 | William Coffey | 11 | Son | — | New Jersey |
| 18 | Martin Coffey | 7 | Son | — | New Jersey |
| 19 | Patricia Coffey | 3 | Daughter | — | New Jersey |
| 20 | George Sommerfield | 31 | Head | Machinist | New Jersey |
| 21 | Mary Sommerfield | 26 | Wife | — | New Jersey |
| 22 | Marylin Sommerfield | 8 | Daughter | — | New Jersey |
| 23 | Dolores Sommerfield | 4 | Daughter | — | New Jersey |
| 24 | Frances Dacker | 42 | Head | Domestic | Poland |
| 25 | Sigmund Dacker | 24 | Son | Truck Driver | New Jersey |
| 26 | Bernice Dacker | 22 | Son | Shipping Clerk | New Jersey |
| 27 | Stanley Dacker | 20 | Son | Shipping Clerk | New Jersey |
| 28 | Helen Dacker | 18 | Daughter | Packer | New Jersey |
| 29 | Philip Dacker | 25 | Son | Driller | New Jersey |
| 30 | Dorothy Dacker | 19 | Daughter-in-law | — | New Jersey |
| 31 | David Dacker | 0 | Grandson | — | New Jersey |
| 32 | Fred Schmidt | 51 | Head | Laborer | New York |
| 33 | Fred Jr. Schmidt | 27 | Son | Clerk | New Jersey |
| 34 | Catherine Schmidt | 26 | Daughter | — | New Jersey |
| 35 | Caroline Rolling | 52 | Head | — | Germany |
| 36 | Carl Rolling | 22 | Son | Machinist | New Jersey |
| 37 | Walter J. Specht | 30 | Son-in-law | Electrician | New Jersey |
| 38 | Gertrude Specht | 30 | Daughter | — | New Jersey |
| 39 | Walter H. Specht | 8 | Grandson | — | New Jersey |
| 40 | Joe Louis Chodowsky | 31 | Head | — | Poland |
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)