JL
Joseph Leonard — 1940 US Census Record
Model Tree available1940 United States Federal Census · Hudson-County, New Jersey
Our Model Tree links this Joseph Leonard across the 1920, 1930 and 1940 US Censuses in Hudson-County, New Jersey (XGBoost, ~Confirmed), with identified parents William & Mary — first a son (b.~1910), then head of a 5-person household.
Age 30
b. ~1910
Male
Son
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hudson-County, New Jersey |
| Surname | Leonard |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Arlington |
| 1935 Residence (County) | Hudson |
| Additional Details | |
| Occupation | Shipper |
| Industry | Tire & Rubber |
| Class of Worker | PW |
| Hours Worked | 12 |
| Income (1939) | 864 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Shipper |
| Township / Ward | Arlington |
| Est. Birth Year | ~1910 |
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 Joseph | Age | Birth yr |
|---|---|---|---|---|
| Mary Leonard | Head | — | 62 | ~1878 |
| Marion Leonard | Daughter | — | 39 | ~1901 |
| Florence Leonard | Daughter | — | 32 | ~1908 |
| Joseph Leonard | Son | — | 30 | ~1910 |
| Aloysius Leonard | Son | — | 34 | ~1906 |
Census Appearances
1920
Essex, New …
Son, age 8
Essex, New Jersey · implied b. ~1912 — 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 | 8 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New York |
| Mother's Birthplace | New Jersey |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Essex, New …
Son, age 19
Essex, New Jersey · implied b. ~1911 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leonard |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New York |
| Mother's Birthplace | New Jersey |
| Occupation | Machinist |
| Industry | Electric Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Hudson-County, New …
Son, age 30
Hudson-County, New Jersey · implied b. ~1910 — 5 household members
| Surname | Leonard |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Arlington |
| 1935 Residence (County) | Hudson |
| Occupation | Shipper |
| Industry | Tire & Rubber |
| Class of Worker | PW |
| Hours Worked | 12 |
| Income (1939) | 864 |
| Highest Grade | Hs 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 Joseph 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) and mother Mary Leonard (~0.92 confidence). The pedigree spans 1 generation with 4 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
Mother
Mary Leonard
b. ~1878
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Joseph Leonard
Son · 1940 · age 30 · b. ~1910 · New Jersey
★ You are viewing this record
Sibling
Marion Leonard
Sibling · 1940 · age 39
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Florence Leonard
Sibling · 1940 · age 32
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Aloysius Leonard
Sibling · 1940 · age 34
Source co-child of head (derived)
● Co-child · derived · ~0.88
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
40 people indexed on this census page (nara:1940:m-t0627-02350-00804)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George Mccall | 55 | Boarder | Operator | New Jersey |
| 2 | Anna Mccall | 55 | Boarder | — | New Jersey |
| 3 | Louis Eckert | 67 | Head | Treasurer | New Jersey |
| 4 | Florence B. Eckert | 54 | Sister | — | New York |
| 5 | Mary Fryer | 52 | Housekeeper | Housekeeper | New Jersey |
| 6 | Alfred Ostlund | 71 | Head | Minister | Sweden |
| 7 | Bertha Ostlund | 78 | Wife | — | Sweden |
| 8 | Martha Ostlund | 38 | Daughter | Stenographer | New York |
| 9 | Alfred P. Ostlund | 25 | Son | Claim Dept. | New Jersey |
| 10 | Edith Fowler | 61 | Head | — | Sweden |
| 11 | Ruth Fowler | 31 | Daughter | Service Representative | New Jersey |
| 12 | Hidetaro Yamaguchi | 62 | Head | Secretary | Japan |
| 13 | Shidue Yamaguchi | 56 | Wife | — | Japan |
| 14 | Shidue Yamaguchi | 32 | Daughter | Clerk | Japan |
| 15 | Kaduto Yamaguchi | 30 | Son | Clerk | Illinois |
| 16 | Seiko Yamaguchi | 25 | Daughter | Clerk | Illinois |
| 17 | Sadako Yamaguchi | 22 | Daughter | Clerk | New Jersey |
| 18 | Tsugio Yamaguchi | 20 | Son | Clerk | New Jersey |
| 19 | Mitsuko Yamaguchi | 18 | Son | — | New Jersey |
| 20 | Takako Yamaguchi | 14 | Daughter | — | New Jersey |
| 21 | George Settle | 54 | Head | Secretary | Massachusetts |
| 22 | Edna Settle | 51 | Wife | — | New Jersey |
| 23 | Jennie Settle | 83 | Mother | — | Scotland |
| 24 | Andrew King | 40 | Head | Asst. Chemist | New Jersey |
| 25 | Marion King | 37 | Wife | — | New York |
| 26 | Alice King | 10 | Daughter | — | New Jersey |
| 27 | Elizabeth King | 9 | Daughter | — | New Jersey |
| 28 | Hubert Romack | 31 | Lodger | Teacher | Illinois |
| 29 | Mary Leonard | 62 | Head | Waitress | New Jersey |
| 30 | Marion Leonard | 39 | Daughter | Clerk | New Jersey |
| 31 | Aloysius Leonard | 34 | Son | Clerk | New Jersey |
| 32 | Florence Leonard | 32 | Daughter | Welder | New Jersey |
| 33 | Joseph Leonard THIS PERSON | 30 | Son | Shipper | New Jersey |
| 34 | Charles Tusak | 46 | Head | Jeweler | Switzerland |
| 35 | Julia Tusak | 37 | Wife | — | New Jersey |
| 36 | Jacob, H. Stapelkamp | 52 | Head | Blockcutter | Virginia |
| 37 | Nancy Stapelkamp | 46 | Wife | — | Virginia |
| 38 | Leslie Acker | 34 | Head | Salesman | New Jersey |
| 39 | Irene Acker | 33 | Wife | Teacher | New York |
| 40 | Patrick Reynolds | 55 | Head | Agent | New Jersey |
Pedigree Summary
Joseph + 3 siblings
Gen 1 · 4 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)