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Thomas Leonard — 1940 US Census Record
Model Tree available1940 United States Federal Census · Essex-County, New Jersey
Our Model Tree links this Thomas Leonard across the 1920, 1930 and 1940 US Censuses in Essex-County, New Jersey (XGBoost, ~Confirmed), with identified parents William & Mary — first a head (b.~1914), then head of a 3-person household.
Age 26
b. ~1914
Male
Head
Born: New Jersey
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, New Jersey |
| Surname | Leonard |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | NEWARK CITY |
| 1935 Residence (County) | ESSEX |
| Additional Details | |
| Occupation | Printer |
| Industry | Print Shop |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1040 |
| Highest Grade | H-4 |
| 1935 Residence | Same Place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Printer |
| Township / Ward | Newark City |
| Est. Birth Year | ~1914 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Alice Leonard | Spouse | — | 23 | ~1917 |
| William Leonard | Son | — | 2 | ~1938 |
| Thomas Leonard | Head | — | 26 | ~1914 |
Census Appearances
1920
Essex, New …
Son, age 5
Essex, New Jersey · implied b. ~1915 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leonard |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New York |
| Mother's Birthplace | New Jersey |
| Occupation | none |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Essex, New …
Son, age 15
Essex, New Jersey · implied b. ~1915 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leonard |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New York |
| Mother's Birthplace | New Jersey |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Essex-County, New …
Head, age 26
Essex-County, New Jersey · implied b. ~1914 — 3 household members
| Surname | Leonard |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | NEWARK CITY |
| 1935 Residence (County) | ESSEX |
| Occupation | Printer |
| Industry | Print Shop |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1040 |
| 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 Thomas Leonard across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Leonard (~0.92 confidence) and mother Mary Leonard (~0.92 confidence) and mother Mary Leonard (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Leonard
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Mary Leonard
b. ~1891
Source mother
● Household
· direct · ~0.92
Mother
Mary Leonard
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Leonard
Head · 1940 · age 26 · b. ~1914 · 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-t0627-02423-00189)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Thomas Leonard THIS PERSON | 26 | Head | Printer | New Jersey |
| 2 | Alice Leonard | 23 | Wife | — | New Jersey |
| 3 | William Leonard | 2 | Son | — | New Jersey |
| 4 | Thomas Delegen | 35 | Head | Skilled | New Jersey |
| 5 | Lillian Delegen | 35 | Wife | Maintenance | New Jersey |
| 6 | Vivian Delegen | 9 | Daughter | — | New Jersey |
| 7 | Robert Delegen | 7 | Son | — | New Jersey |
| 8 | Margaret Ann Delegen | 2 | Daughter | — | New Jersey |
| 9 | James Hunniford | 37 | Head | Detective | New Jersey |
| 10 | Hazel Hunniford | 39 | Wife | — | New Jersey |
| 11 | Ronald Hunniford | 14 | Son | — | New Jersey |
| 12 | George Hunniford | 9 | Son | — | New Jersey |
| 13 | Maxwell Steel | 70 | Head | — | New Jersey |
| 14 | Ellen Steel | 78 | Sister | — | New Jersey |
| 15 | Janette Steel | 63 | Sister | — | New Jersey |
| 16 | Martha Stockwell | 66 | Sister | — | New Jersey |
| 17 | Frank Kerr | 44 | Head | Foreman | New Jersey |
| 18 | Marie Kerr | 42 | Wife | — | New Jersey |
| 19 | George Kerr | 11 | Son | — | New Jersey |
| 20 | Reinhardt Serr | 75 | Head | Stationary Fireman | Germany |
| 21 | William Britz | 46 | Step-son | Laborer | New Jersey |
| 22 | Johanna Britz | 45 | Wife | — | New Jersey |
| 23 | Emma Moore | 45 | Boarder | Garment Maker | New Jersey |
| 24 | John E. Joyce | 49 | Head | Commissioner | New Jersey |
| 25 | Theresa Joyce | 47 | Wife | — | New Jersey |
| 26 | Elizabeth Joyce | 16 | Daughter | — | New Jersey |
| 27 | Jane Joyce | 16 | Daughter | — | New Jersey |
| 28 | Mary Joyce | 15 | Daughter | — | New Jersey |
| 29 | John Joyce | 13 | Son | — | New Jersey |
| 30 | Robert Joyce | 11 | Son | — | New Jersey |
| 31 | Felix Kacey | 53 | Head | — | New Jersey |
| 32 | Helen L. Kacey | 24 | Daughter | Stenographer | New Jersey |
| 33 | Thelma Kacey | 22 | Daughter | Stenographer | New Jersey |
| 34 | Anthony Vitale | 27 | Head | Salesman | New Jersey |
| 35 | Dorothy Vitale | 24 | Wife | — | New Jersey |
| 36 | James Vitale | 2 | Son | — | New Jersey |
| 37 | Peter Cicero | 60 | Head | Contractor | Italy |
| 38 | Mary Cicero | 55 | Wife | — | Italy |
| 39 | Peter Cicero | 33 | Son | Foreman Metal Works | New Jersey |
| 40 | Marie Cicero | 31 | Daughter | Stenographer | New Jersey |
Pedigree Summary
Thomas
Gen 1 · 3 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)