JH
John Hart — 1940 US Census Record
Model Tree available1940 United States Federal Census · Essex-County, New Jersey
Our Model Tree links this John Hart across the 1920, 1930 and 1940 US Censuses in Essex-County, New Jersey (XGBoost, ~Confirmed), with identified parents John & Mary — first a head (b.~1906), then head of a 5-person household.
Age 34
b. ~1906
Male
Head
Born: New Jersey
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, New Jersey |
| Surname | Hart |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | IRVINGTON |
| 1935 Residence (County) | ESSEX |
| Additional Details | |
| Occupation | Automobile Salesman |
| Industry | Automobile Dealer |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 1820 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Automobile Salesman |
| Township / Ward | Irvington |
| Est. Birth Year | ~1906 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Patricia Hart | Daughter | — | 6 | ~1934 |
| John Hart | Head | — | 34 | ~1906 |
| Rose Evans | Other | — | 68 | ~1872 |
| Robert Hart | Son | — | 11 | ~1929 |
| Mary Hart | Spouse | — | 30 | ~1910 |
Census Appearances
1920
Essex, New …
Son, age 13
Essex, New Jersey · implied b. ~1907 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hart |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| 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 …
Other, age 24
Essex, New Jersey · implied b. ~1906 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hart |
| Given Name | John |
| Relationship to Head | Son-in-law |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | New Jersey |
| Age at First Marriage | 22 |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Occupation | Register Clerk |
| Industry | Post Office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Essex-County, New …
Head, age 34
Essex-County, New Jersey · implied b. ~1906 — 5 household members
| Surname | Hart |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | IRVINGTON |
| 1935 Residence (County) | ESSEX |
| Occupation | Automobile Salesman |
| Industry | Automobile Dealer |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 1820 |
| Highest Grade | H 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 Hart across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Hart (~0.92 confidence) and mother Mary Hart (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Hart
b. ~1860
Source father
● Household
· direct · ~0.92
Mother
Mary Hart
b. ~1873
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Hart
Head · 1940 · age 34 · b. ~1906 · 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-t0627-02334-00920)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Robert Pynckels | 14 | Son | — | New Jersey |
| 42 | Charles Neigel | 35 | Head | Automobile Mechanic | New Jersey |
| 43 | Frieda Neigel | 30 | Wife | Commissary Assistant | New Jersey |
| 44 | Lorraine Neigel | 11 | Daughter | — | New Jersey |
| 45 | Joseph Gawlick | 44 | Head | Baker | New Jersey |
| 46 | Ella Gawlick | 38 | Wife | — | New Jersey |
| 47 | Ruth Gawlick | 19 | Daughter | New Worker | New Jersey |
| 48 | Joseph Gawlick | 7 | Son | — | New Jersey |
| 49 | William Downes | 50 | Head | Toolmaker | New Jersey |
| 50 | Alice F. Downes | 53 | Wife | — | Indiana |
| 51 | Emma Wiedenmayer | 85 | Head | — | New Jersey |
| 52 | Anna M. Bender | 76 | Sister | — | New Jersey |
| 53 | Ernst Kiemle | 38 | Head | Turret Lathe Operator | Germany |
| 54 | Lena Kiemle | 38 | Wife | — | Germany |
| 55 | Ellen Kiemle | 9 | Daughter | — | Germany |
| 56 | Charles Baun | 38 | Head | Assistant Florist | New Jersey |
| 57 | Florence Baun | 40 | Wife | — | New Jersey |
| 58 | Carl F. Dinge | 35 | Head | Automobile Mechanic | New Jersey |
| 59 | Sophie Dinge | 34 | Wife | — | New Jersey |
| 60 | Carl Dinge | 2 | Son | — | New Jersey |
| 61 | Charles Pfost | 39 | Head | Pressman | New Jersey |
| 62 | Minnie Pfost | 34 | Wife | — | New Jersey |
| 63 | Charles J. Pfost | 13 | Son | — | New Jersey |
| 64 | Carl Dinge | 69 | Head | — | Germany |
| 65 | Caroline Dinge | 64 | Wife | — | Germany |
| 66 | John Fay | 40 | Head | Stage Hand | New Jersey |
| 67 | Adelaide Fay | 35 | Wife | — | New Jersey |
| 68 | Clara Pfaff | 44 | Sister-in-law | Chocolate Dipper | New Jersey |
| 69 | Otto Koerner | 65 | Head | Jeweler | Germany |
| 70 | Effie Koerner | 59 | Wife | — | Pennsylvania |
| 71 | Eleanor Evans | 34 | Head | — | New Jersey |
| 72 | Eugene Evans | 11 | Son | — | New Jersey |
| 73 | Raymond Evans | 9 | Son | — | New Jersey |
| 74 | Kenneth Evans | 7 | Son | — | New Jersey |
| 75 | John Hart THIS PERSON | 34 | Head | Automobile Salesman | New Jersey |
| 76 | Mary Hart | 30 | Wife | — | New Jersey |
| 77 | Robert Hart | 11 | Son | — | New Jersey |
| 78 | Patricia Hart | 6 | Daughter | — | New Jersey |
| 79 | Rose Evans | 68 | Mother-in-law | — | New York |
| 80 | Eric Bark | 66 | Head | Bricklayer | Sweden |
Pedigree Summary
John
Gen 1 · 2 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)