JL
John Leonard — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hudson-County, New Jersey
Our Model Tree links this John Leonard across the 1920, 1930 and 1940 US Censuses in Hudson-County, New Jersey (XGBoost, ~Confirmed) — first a head (b.~1863), then head of a 3-person household.
Age 77
b. ~1863
Male
Head
Born: Sweden
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Hudson-County, New Jersey |
| Surname | Leonard |
| Given Name | John T. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 77 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | North Bergen |
| 1935 Residence (County) | Hudson |
| Naturalization Status | Naturalized |
| Additional Details | |
| Hours Worked | 0 |
| Highest Grade | H-8 |
| 1935 Residence | Same House |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
| Township / Ward | North Bergen |
| Est. Birth Year | ~1863 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Edna Leonard | Daughter | — | 38 | ~1902 |
| John Leonard | Head | — | 77 | ~1863 |
| Ida Leonard | Spouse | — | 76 | ~1864 |
Census Appearances
1920
Hudson, New …
Head, age 57
Hudson, New Jersey · implied b. ~1863 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leonard |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Sweden |
| Year of Immigration | 1882 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Laborer |
| Industry | Mfg. Co. |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth Country | Sweden |
| Year of Naturalization | 1890 |
| Birthplace (normalized) | sweden |
1930
Hudson, New …
Head, age 67
Hudson, New Jersey · implied b. ~1863 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leonard |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 67 |
| Marital Status | Married |
| Birthplace | Sweden |
| Naturalization Status | Naturalized |
| Year of Immigration | 1890 |
| Age at First Marriage | 34 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Manufacturer |
| Industry | Sheet Metal |
| Class of Worker | E |
| Can Read/Write | Yes |
| Mother Tongue | Swedish |
| Home Owned/Rented | O |
| Home Value / Rent | 12000 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1940
Hudson-County, New …
Head, age 77
Hudson-County, New Jersey · implied b. ~1863 — 3 household members
| Surname | Leonard |
| Given Name | John T. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 77 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | North Bergen |
| 1935 Residence (County) | Hudson |
| Naturalization Status | Naturalized |
| Hours Worked | 0 |
| Highest Grade | H-8 |
| 1935 Residence | Same House |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
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 Leonard 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 Leonard
Head · 1940 · age 77 · b. ~1863 · 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
40 people indexed on this census page (nara:1940:m-t0627-02351-00209)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William J. Diehl | 58 | Head | Superintendent | New Jersey |
| 2 | Mary E. Diehl | 54 | Wife | — | Canada-English |
| 3 | Clara L. Diehl | 29 | Daughter | Switchboard Operator | New Jersey |
| 4 | Mary Hunter | 84 | Mother-in-law | — | New York |
| 5 | Bernard H. Mcguinness | 31 | Head | Clerk | New Jersey |
| 6 | Madeline E. Mcguinness | 32 | Wife | Asst. Secretary | New Jersey |
| 7 | Louis A. Lott | 38 | Head | Architect | New Jersey |
| 8 | Marie L. Lott | 38 | Wife | — | New Jersey |
| 9 | Frances K. Lott | 6 | Daughter | — | New Jersey |
| 10 | Joanne Lott | 2 | Daughter | — | New Jersey |
| 11 | Katherine E. La Stayo | 62 | Mother-in-law | Music Teacher | New York |
| 12 | Charles F. Schloemer | 58 | Head | Veterinary | New York |
| 13 | Anna E. Schloemer | 48 | Wife | — | Austria |
| 14 | Amy La Fontaine | 46 | Head | — | Texas |
| 15 | Charles Haynes | 27 | Lodger | Chemist | New York |
| 16 | Mark F. Wary | 48 | Lodger | Orderly | New York |
| 17 | Minnie M. Mcelroy | 66 | Head | — | Northern Ireland |
| 18 | Agnes C. Mcelroy | 32 | Daughter | Teacher | New York |
| 19 | John J. Ward | 23 | Nephew | Machinist | New York |
| 20 | Robert K. Hart | 42 | Head | Sales Promotion | New York |
| 21 | Margaret H. Hart | 34 | Wife | Clerk | New York |
| 22 | R. Kenneth Hart | 9 | Son | — | New York |
| 23 | Hattie M. Muller | 58 | Mother-in-law | — | New York |
| 24 | James J. Bradshaw | 75 | Head | Clerk | New York |
| 25 | Julia E. Bradshaw | 68 | Wife | — | New York |
| 26 | John J. Bradshaw | 43 | Head | Janitor | New York |
| 27 | Margaret A. Bradshaw | 42 | Wife | — | New York |
| 28 | James H. Bradshaw | 12 | Son | — | New Jersey |
| 29 | John Bradshaw | 11 | Son | — | New Jersey |
| 30 | Margaret M. Bradshaw | 3 | Daughter | — | New Jersey |
| 31 | John T. Leonard THIS PERSON | 77 | Head | — | Sweden |
| 32 | Ida N. Leonard | 76 | Wife | — | Sweden |
| 33 | Edna C. Leonard | 38 | Daughter | Stenographer | New Jersey |
| 34 | Gordon A. Steele | 38 | Head | Salesman | Virginia |
| 35 | Ida F. Steele | 32 | Wife | Stenographer | New Jersey |
| 36 | Gordon F. Steele | 7 | Son | — | New Jersey |
| 37 | Richard C. Steele | 6 | Son | — | New Jersey |
| 38 | John T. Body | 37 | Head | Maintenance Mechanic | New Jersey |
| 39 | Elizabeth M. Body | 32 | Wife | — | New Jersey |
| 40 | William H. Barry | 52 | Head | Carpenter | Irish Free State |
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)