JL
Joseph Leonard — 1940 US Census Record
Model Tree available1940 United States Federal Census · Passaic-County, New Jersey
Our Model Tree links this Joseph Leonard across the 1900, 1910, 1920, 1930 and 1940 US Censuses in Passaic-County, New Jersey (XGBoost, ~Confirmed), with identified parents Joseph & Eliza — first a head (b.~1896), then head of a 7-person household.
Age 44
b. ~1896
Male
Head
Born: New Jersey
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Passaic-County, New Jersey |
| Surname | Leonard |
| Given Name | Joseph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | Paterson City |
| 1935 Residence (County) | Passaic |
| Additional Details | |
| Occupation | Weight Inspector |
| Industry | Dept Weights |
| Class of Worker | GW |
| Hours Worked | 35 |
| Income (1939) | 1800 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Weight Inspector |
| Township / Ward | Paterson City |
| Est. Birth Year | ~1896 |
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 Joseph | Age | Birth yr |
|---|---|---|---|---|
| Estelle Leonard | Daughter | — | 22 | ~1918 |
| Joseph Leonard | Son | — | 19 | ~1921 |
| Rita Leonard | Daughter | — | 24 | ~1916 |
| Florence Leonard | Daughter | — | 13 | ~1927 |
| Joseph Leonard | Head | — | 44 | ~1896 |
| Estelle Leonard | Spouse | — | 44 | ~1896 |
| Francis Leonard | Son | — | 1 | ~1939 |
Census Appearances
1900
Passaic, New …
Son, age 4
Passaic, New Jersey · implied b. ~1896 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leonard |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Birth Month | Nov |
| Birth Year | 1896 |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Occupation | at school |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1910
Passaic, New …
Son, age 14
Passaic, New Jersey · implied b. ~1896 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leonard |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1920
Passaic, New …
Head, age 23
Passaic, New Jersey · implied b. ~1897 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leonard |
| Given Name | Joseph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Occupation | Brakeman |
| Industry | Steam RR |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Passaic, New …
Head, age 33
Passaic, New Jersey · implied b. ~1897 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leonard |
| Given Name | Joseph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | New Jersey |
| Age at First Marriage | 17 |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Occupation | Salesman |
| Industry | Stocks |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 25 |
| Veteran | No |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Passaic-County, New …
Head, age 44
Passaic-County, New Jersey · implied b. ~1896 — 7 household members
| Surname | Leonard |
| Given Name | Joseph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | Paterson City |
| 1935 Residence (County) | Passaic |
| Occupation | Weight Inspector |
| Industry | Dept Weights |
| Class of Worker | GW |
| Hours Worked | 35 |
| Income (1939) | 1800 |
| Highest Grade | No 8 |
| 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 Joseph Leonard across 5 US Census years (1900, 1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Joseph Mcwilliams (~0.92 confidence) and mother Eliza Mcwilliams (~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
Joseph Mcwilliams
b. ~1825
Source father
● Household
· direct · ~0.92
Mother
Eliza Mcwilliams
b. ~1826
Source mother
● Household
· direct · ~0.92
Mother
Mary Leonard
b. ~1865
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Joseph Leonard
Head · 1940 · age 44 · b. ~1896 · 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 — Passaic-County, New Jersey
Open full size
1940 US Federal Census — Passaic-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02431-00624)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mabel Graf | 60 | Head | Housework | New Jersey |
| 2 | Libby Cavanaugh | 42 | Head | Saleslady | New Jersey |
| 3 | Alice Cavanaugh | 18 | Daughter | Stock Clerk | New Jersey |
| 4 | John Cavanaugh | 16 | Son | Clerk | New Jersey |
| 5 | James Leonard | 46 | Head | Millwright | New Jersey |
| 6 | Mary Leonard | 46 | Wife | — | New Jersey |
| 7 | Eileen Leonard | 23 | Daughter | Operator | New Jersey |
| 8 | James Leonard | 20 | Son | Bottler | New Jersey |
| 9 | Edward Leonard | 19 | Son | Clerk | New Jersey |
| 10 | Thomas Heerema | 46 | Head | Warper | New Jersey |
| 11 | Rosalie Heerema | 44 | Wife | — | New Jersey |
| 12 | Thomas Heerema | 16 | Son | — | New Jersey |
| 13 | Clarence Heerema | 14 | Son | — | New Jersey |
| 14 | Joseph Leonard THIS PERSON | 44 | Head | Weight Inspector | New Jersey |
| 15 | Estelle Leonard | 44 | Wife | — | New Jersey |
| 16 | Rita Leonard | 24 | Daughter | Office Manager | New Jersey |
| 17 | Estelle Leonard | 22 | Daughter | Typist | New Jersey |
| 18 | Joseph Leonard | 19 | Son | Clerk | New Jersey |
| 19 | Florence Leonard | 13 | Daughter | — | New Jersey |
| 20 | Francis Leonard | 1 | Son | — | New Jersey |
| 21 | Robert Mader | 32 | Head | Baker | Germany |
| 22 | Harriet Mader | 27 | Wife | Clerk | New Jersey |
| 23 | Joseph Flanagan | 50 | Head | Salesman | New Jersey |
| 24 | Elizabeth Flanagan | 44 | Wife | — | New Jersey |
| 25 | Veronica Flanagan | 15 | Daughter | — | New Jersey |
| 26 | James Flanagan | 43 | Brother | Porter | New Jersey |
| 27 | Mae Dziuba | 44 | Head | Nurse | Connecticut |
| 28 | Joseph Barker | 42 | Head | Dyer | Germany |
| 29 | Emily Barker | 40 | Wife | — | Eire |
| 30 | Joan Barker | 12 | Daughter | — | New Jersey |
| 31 | Elaine Barker | 9 | Daughter | — | New Jersey |
| 32 | Emily Barker | 8 | Daughter | — | New Jersey |
| 33 | Lilly Callahan | 62 | Head | Matron | New Jersey |
| 34 | Robert Callahan | 23 | Son | Recreation Leader | New Jersey |
| 35 | Vincent Callahan | 22 | Son | New Worker | New Jersey |
| 36 | End Of Graham Along Line | None | Begin | — | — |
| 37 | Harry Goldstein | 27 | Head | Prop. Grocer | New Jersey |
| 38 | Sally Goldstein | 26 | Wife | — | New Jersey |
| 39 | David Goldberg | 55 | Head | Clerk | Poland |
| 40 | Mollie Goldberg | 52 | Wife | — | Poland |
Pedigree Summary
Joseph
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)