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.~1930), then head of a 7-person household.
Age 10
b. ~1930
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 | 10 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Bloomfield |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Township / Ward | Bloomfield |
| Est. Birth Year | ~1930 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Edward Coffey | Son | — | 7 | ~1933 |
| David Coffey | Son | — | 1 | ~1939 |
| Vincent Coffey | Son | — | 5 | ~1935 |
| Ethel Coffey | Spouse | — | 33 | ~1907 |
| Martin Coffey | Head | — | 38 | ~1902 |
| Martin Coffey | Son | — | 11 | ~1929 |
| John Coffey | Son | — | 10 | ~1930 |
Census Appearances
1930
Essex, New …
Son, age
Essex, New Jersey · implied b. ~1930 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Coffey |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | England |
| Mother's Birthplace | Irish Free State |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Essex-County, New …
Son, age 10
Essex-County, New Jersey · implied b. ~1930 — 7 household members
| Surname | Coffey |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Bloomfield |
| 1935 Residence (County) | Essex |
| Highest Grade | No 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 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 10 · b. ~1930 · New Jersey
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Sibling
Edward Coffey
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David Coffey
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Martin Coffey
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Vincent Coffey
Sibling · 1940 · age 5
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-t0627-02330-00118)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William L Hawks | 20 | Son | Assembler | New Jersey |
| 42 | Ernest Hayes | 42 | Head | Button Worker | England |
| 43 | Sarah E Hayes | 43 | Wife | — | England |
| 44 | William E Hayes | 23 | Son | Electrical Engineer | England |
| 45 | Ernest Jr Hayes | 17 | Son | Errand Boy | England |
| 46 | George D Hayes | 13 | Son | — | England |
| 47 | Grace M Hayes | 9 | Daughter | — | New Jersey |
| 48 | Fred Thomas | 41 | Head | Printer | New York |
| 49 | Agnes Thomas | 40 | Wife | — | New York |
| 50 | Marie Thomas | 17 | Daughter | — | New Jersey |
| 51 | Fred Jr Thomas | 16 | Son | — | New Jersey |
| 52 | Katherine Thomas | 14 | Daughter | — | New Jersey |
| 53 | Martin Coffey | 38 | Head | Painter | New Jersey |
| 54 | Ethel Coffey | 33 | Wife | — | New Jersey |
| 55 | Martin Jr Coffey | 11 | Son | — | New Jersey |
| 56 | John Coffey THIS PERSON | 10 | Son | — | New Jersey |
| 57 | Edward Coffey | 7 | Son | — | New Jersey |
| 58 | Vincent Coffey | 5 | Son | — | New Jersey |
| 59 | David Coffey | 1 | Son | — | New Jersey |
| 60 | Joseph Potter | 44 | Head | Foreman | England |
| 61 | Mabel Potter | 44 | Wife | — | England |
| 62 | Edna Potter | 19 | Daughter | Inspector | England |
| 63 | Ray Potter | 17 | Son | — | England |
| 64 | Stanley Potter | 11 | Son | — | New Jersey |
| 65 | June Potter | 2 | Daughter | — | New Jersey |
| 66 | Bryce Kinyon | 28 | Head | Industrial Engineer | Indiana |
| 67 | Zilla Kinyon | 28 | Wife | — | Iowa |
| 68 | Bryce M Kinyon | 3 | Son | — | New Jersey |
| 69 | Thomas Unsworth | 46 | Head | Machine Operator | England |
| 70 | Elizabeth Unsworth | 46 | Wife | Packer | England |
| 71 | Eileen Unsworth | 18 | Daughter | Clerk | New Jersey |
| 72 | Lillian Unsworth | 11 | Daughter | Bottling | New Jersey |
| 73 | Jessie Stall | 40 | Head | Houseworker | New Jersey |
| 74 | William Stall | 14 | Son | — | New Jersey |
| 75 | Donald Stall | 7 | Son | — | New Jersey |
| 76 | George Nuzel | 28 | Head | Shipping Clerk | New Jersey |
| 77 | Louise Nuzel | 26 | Wife | — | New Jersey |
| 78 | Martha Oehrmann | 37 | Head | Manager | Germany |
| 79 | Agnes Oehrmann | 20 | Daughter | Factory Worker | Germany |
| 80 | Fred Schiller | 38 | Brother | Welder | Germany |
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)