JF
John Farrell — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hudson-County, New Jersey
Our Model Tree links this John Farrell across the 1920, 1930 and 1940 US Censuses in Hudson-County, New Jersey (XGBoost, ~Confirmed) — first a head (b.~1889), then head of a 8-person household.
Age 51
b. ~1889
Male
Head
Born: New Jersey
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Hudson-County, New Jersey |
| Surname | Farrell |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (County) | Hudson |
| Additional Details | |
| Occupation | 35 |
| Industry | Brakeman |
| Class of Worker | Central RR |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | 35 |
| Township / Ward | Jersey City |
| Est. Birth Year | ~1889 |
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 |
|---|---|---|---|---|
| Wilse Farrell | Daughter | — | 27 | ~1913 |
| Doris Farrell | Daughter | — | 13 | ~1927 |
| John Farrell | Head | — | 51 | ~1889 |
| Matthew Farrell | Son | — | 10 | ~1930 |
| Thomas Farrell | Son | — | 25 | ~1915 |
| William Farrell | Son | — | 17 | ~1923 |
| Edward Farrell | Son | — | 15 | ~1925 |
| Mary Farrell | Spouse | — | 51 | ~1889 |
Census Appearances
1920
Hudson, New …
Head, age 30
Hudson, New Jersey · implied b. ~1890 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Farrell |
| Given Name | John |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | New Jersey |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Fireman |
| Industry | copper factory |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Year of Naturalization | R |
| Birthplace (normalized) | new jersey |
1930
Hudson, New …
Head, age 41
Hudson, New Jersey · implied b. ~1889 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Farrell |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | New Jersey |
| Age at First Marriage | 30 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | New Jersey |
| Occupation | Conductor |
| Industry | Railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 35 |
| Radio Set | R |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Hudson-County, New …
Head, age 51
Hudson-County, New Jersey · implied b. ~1889 — 8 household members
| Surname | Farrell |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (County) | Hudson |
| Occupation | 35 |
| Industry | Brakeman |
| Class of Worker | Central RR |
| Highest Grade | No 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 Farrell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Farrell
Head · 1940 · age 51 · b. ~1889 · New Jersey
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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
39 people indexed on this census page (nara:1940:m-t0627-02408-00373)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Juliana O'Keefe | 0 | Daughter | — | New Jersey |
| 2 | Owen O'Keefe | 42 | Head | Special Agent | Irish Free State |
| 3 | Mary O'Keefe | 35 | Wife | — | Irish Free State |
| 4 | Margaret O'Keefe | 11 | Daughter | — | Irish Free State |
| 5 | Mae O'Keefe | 9 | Daughter | — | New Jersey |
| 6 | Eugene O'Keefe | 7 | Son | — | New Jersey |
| 7 | Emily O'Keefe | 5 | Daughter | — | New Jersey |
| 8 | Patricia O'Keefe | 3 | Daughter | — | New Jersey |
| 9 | Mary O'Keefe | 1 | Daughter | — | New Jersey |
| 10 | George Conway | 61 | Head | — | Massachusetts |
| 11 | Charles Conway | 25 | Son | 40 | New Jersey |
| 12 | Gerard Conway | 14 | Son | — | New Jersey |
| 13 | Catherine Conway | 56 | Wife | — | New Jersey |
| 14 | John Farrell THIS PERSON | 51 | Head | 35 | New Jersey |
| 15 | Mary Farrell | 51 | Wife | — | New Jersey |
| 16 | Wilse Mary Farrell | 27 | Daughter | 44 | New Jersey |
| 17 | Thomas Farrell | 25 | Son | 24 | New Jersey |
| 18 | William Farrell | 17 | Son | — | New Jersey |
| 19 | Edward Farrell | 15 | Son | — | New Jersey |
| 20 | Doris Farrell | 13 | Daughter | — | New Jersey |
| 21 | Matthew Farrell | 10 | Son | — | New Jersey |
| 22 | Joseph Lipnick | 46 | Head | 15 | New York |
| 23 | Helen Lipnick | 41 | Wife | 48 | New Jersey |
| 24 | Gordon Lipnick | 25 | Son | 40 | New Jersey |
| 25 | Shirley Lipnick | 16 | Daughter | — | New Jersey |
| 26 | Helen Lipnick | 15 | Daughter | — | New Jersey |
| 27 | Jane Lipnick | 6 | Daughter | — | New Jersey |
| 28 | Edward Kelly | 29 | Head | 24 | New Jersey |
| 29 | Vincent Kelly | 25 | Brother | 40 | New Jersey |
| 30 | Adam Kalpin | 71 | Head | — | Germany |
| 31 | Marie Kalpin | 69 | Wife | — | Germany |
| 32 | Emma Kalpin | 34 | Daughter | 44 | New Jersey |
| 33 | Amelia Kalpin | 30 | Daughter | — | New Jersey |
| 34 | Olga Kalpin | 22 | Daughter | 40 | New Jersey |
| 35 | Henry Sheffield | 22 | Head | Entomologist | Massachusetts |
| 36 | Hazel Sheffield | 22 | Wife | — | Maine |
| 37 | Joanne Sheffield | 0 | Daughter | — | New Jersey |
| 38 | George Howe | 23 | Head | 40 | Illinois |
| 39 | Jean Howe | 20 | Wife | — | Pennsylvania |
Related Census Records
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)