JC
John Callahan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Essex-County, New Jersey
Our Model Tree links this John Callahan across the 1920, 1930 and 1940 US Censuses in Essex-County, New Jersey (XGBoost, ~Confirmed), with identified parents Ellen — first a head (b.~1898), then head of a 9-person household.
Age 42
b. ~1898
Male
Head
Born: New Jersey
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, New Jersey |
| Surname | Callahan |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | Belleville Town |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Occupation | foreman label |
| Industry | plate glass factory |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1520 |
| Highest Grade | G 8 |
| 1935 Residence | Same House |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Foreman Label |
| Township / Ward | Belleville Town |
| Est. Birth Year | ~1898 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Jean Callahan | Daughter | — | 13 | ~1927 |
| John Callahan | Head | — | 42 | ~1898 |
| Roger Callahan | Son | — | 17 | ~1923 |
| Edwin Callahan | Son | — | 6 | ~1934 |
| Joseph Callahan | Son | — | 8 | ~1932 |
| John Callahan | Son | — | 10 | ~1930 |
| Robert Callahan | Son | — | 4 | ~1936 |
| David Callahan | Son | — | 15 | ~1925 |
| Josephine Callahan | Spouse | — | 42 | ~1898 |
Census Appearances
1920
Essex, New …
Son, age 22
Essex, New Jersey · implied b. ~1898 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Callahan |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Essex, New …
Head, age 32
Essex, New Jersey · implied b. ~1898 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Callahan |
| Given Name | John J |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | New Jersey |
| Age at First Marriage | 22 |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Occupation | Foreman |
| Industry | Paint Shop |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 25 |
| Radio Set | R |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Essex-County, New …
Head, age 42
Essex-County, New Jersey · implied b. ~1898 — 9 household members
| Surname | Callahan |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | Belleville Town |
| 1935 Residence (County) | Essex |
| Occupation | foreman label |
| Industry | plate glass factory |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1520 |
| Highest Grade | G 8 |
| 1935 Residence | Same House |
| 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 Callahan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Ellen Callahan (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Ellen Callahan
b. ~1868
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Callahan
Head · 1940 · age 42 · b. ~1898 · 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 — 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-t0627-02328-00248)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Antoinette Ferrara | 43 | Wife | — | Italy |
| 2 | Gerard J. Ferrara | 20 | Stepson | Laborer | New Jersey |
| 3 | Mary Ferrara | 16 | Stepdaughter | — | New Jersey |
| 4 | Michael Ferrara | 14 | Stepson | — | New Jersey |
| 5 | Alphonse Ferrara | 12 | Stepson | — | New Jersey |
| 6 | John Primiani | 30 | Head | Pipe Layer | Italy |
| 7 | Chancy Primiani | 23 | Wife | — | New Jersey |
| 8 | Carl Primiani | 0 | Son | — | New Jersey |
| 9 | Marino Guerin | 25 | Head | Filler | Italy |
| 10 | Tavia Guerin | 25 | Wife | Machine Operator | New Jersey |
| 11 | Mario Vattalin | 24 | Head | Welder | New Jersey |
| 12 | Margaret Vattalin | 22 | Wife | — | New Jersey |
| 13 | Ernest Koehne | 45 | Head | Research Chemist | Germany |
| 14 | Ida T. Koehne | 46 | Wife | — | Germany |
| 15 | Helen Koehne | 12 | Daughter | — | New Jersey |
| 16 | Thomas Candura | 58 | Head | Carpenter | Italy |
| 17 | Sadie Candura | 46 | Wife | — | New Jersey |
| 18 | Nicholas Candura | 26 | Son | Stock Clerk | New Jersey |
| 19 | Rose Candura | 21 | Daughter | Typist | New Jersey |
| 20 | Thomas Jr. Candura | 19 | Son | Messenger | New Jersey |
| 21 | Henry Candura | 16 | Son | — | New Jersey |
| 22 | John Callahan THIS PERSON | 42 | Head | Foreman Label | New Jersey |
| 23 | Josephine Callahan | 42 | Wife | — | New Jersey |
| 24 | Roger Callahan | 17 | Son | — | New Jersey |
| 25 | David Callahan | 15 | Son | — | New Jersey |
| 26 | Jean Callahan | 13 | Daughter | — | New Jersey |
| 27 | John Jr. Callahan | 10 | Son | — | New Jersey |
| 28 | Joseph Callahan | 8 | Son | — | New Jersey |
| 29 | Edwin Callahan | 6 | Son | — | New Jersey |
| 30 | Robert Callahan | 4 | Son | — | New Jersey |
| 31 | Melvin Mcclinchy | 27 | Head | New Worker | New Jersey |
| 32 | Minnie Mcclinchy | 75 | Cousin | — | New Jersey |
| 33 | Alan Macdonald | 37 | Head | Teacher | California |
| 34 | Emily Macdonald | 73 | Mother | — | Michigan |
| 35 | Paul Rowe | 71 | Head | Stationary Fireman | Eire |
| 36 | Mary Rowe | 72 | Wife | — | Ireland |
| 37 | Nicholas Rowe | 39 | Son | Watchman | New Jersey |
| 38 | John Rowe | 34 | Son | Deliveryman | New Jersey |
| 39 | Elsie Rowe | 33 | Daughter | Saleslady | New Jersey |
| 40 | Walter Turner | 52 | Head | Superintendent | England |
Pedigree Summary
John
Gen 1 · 1 parents
~0.92
Max depth 4 (1900–1950 window)
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)