LJ
Leon Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · New-Haven-County, Connecticut
Our Model Tree links this Leon Johnson across the 1920, 1930 and 1940 US Censuses in New-Haven-County, Connecticut (XGBoost, ~Confirmed) — first a head (b.~1890), then head of a 5-person household.
Age 50
b. ~1890
Male
Head
Born: Sweden
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | New-Haven-County, Connecticut |
| Surname | Johnson |
| Given Name | Leon |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | West Haven Town |
| 1935 Residence (County) | New Haven |
| Naturalization Status | First papers filed |
| Additional Details | |
| Occupation | Carpenter |
| Industry | building cont. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 308 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
| Occupation | Carpenter |
| Township / Ward | West Haven Town |
| Est. Birth Year | ~1890 |
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 Leon | Age | Birth yr |
|---|---|---|---|---|
| Helen Johnson | Daughter | — | 20 | ~1920 |
| Stanley Johnson | Son | — | 11 | ~1929 |
| Leon Johnson | Head | — | 50 | ~1890 |
| Barbara Johnson | Daughter | — | 16 | ~1924 |
| Ester Johnson | Spouse | — | 44 | ~1896 |
Census Appearances
1920
New Haven, …
Head, age 30
New Haven, Connecticut · implied b. ~1890 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Leon |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Sweden |
| Year of Immigration | 1911 |
| Naturalization Status | Alien |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Chauffeur |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Home Owned/Rented | R |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1930
New Haven, …
Head, age 40
New Haven, Connecticut · implied b. ~1890 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Leon |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Sweden |
| Naturalization Status | Alien |
| Year of Immigration | 1907 |
| Age at First Marriage | 26 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Carpenter |
| Industry | Building |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Swedish |
| Home Owned/Rented | R |
| Home Value / Rent | 35 |
| Radio Set | R |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1940
New-Haven-County, Connecticut
Head, age 50
New-Haven-County, Connecticut · implied b. ~1890 — 5 household members
| Surname | Johnson |
| Given Name | Leon |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | West Haven Town |
| 1935 Residence (County) | New Haven |
| Naturalization Status | First papers filed |
| Occupation | Carpenter |
| Industry | building cont. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 308 |
| Highest Grade | No 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 Leon Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Leon Johnson
Head · 1940 · age 50 · b. ~1890 · Connecticut
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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 — New-Haven-County, Connecticut
Open full size
1940 US Federal Census — New-Haven-County, Connecticut
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00522-00261)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lawrence Anderson | 16 | son | — | Connecticut |
| 42 | Ruth Anderson | 12 | daughter | — | Connecticut |
| 43 | Clarence H. Robinson | 55 | head | Trucker | New York |
| 44 | Anna Robinson | 54 | wife | Practical Nursing | Sweden |
| 45 | Anna Robinson | 27 | daughter | Waitress | New York |
| 46 | Clarence Robinson | 25 | son | Well Driller | Connecticut |
| 47 | Donald Robinson | 23 | son | Trucker | Connecticut |
| 48 | James Robinson | 17 | son | — | Connecticut |
| 49 | Robert Enright | 50 | head | Truck Driver | New York |
| 50 | John Mcnamara | 47 | head | Chef | Connecticut |
| 51 | Una Mcnamara | 42 | wife | Instructor Music | Iowa |
| 52 | James O'Connor | 47 | head | — | Connecticut |
| 53 | Margaret O'Connor | 33 | wife | Housework | Connecticut |
| 54 | Leon Johnson THIS PERSON | 50 | head | Carpenter | Sweden |
| 55 | Ester Johnson | 44 | wife | Housework | Connecticut |
| 56 | Helen Johnson | 20 | daughter | Housework | Connecticut |
| 57 | Barbara Johnson | 16 | daughter | — | Connecticut |
| 58 | Stanley Johnson | 11 | son | — | Connecticut |
| 59 | Robert Dinsberg | 42 | head | Retail Salesman | Poland |
| 60 | Charles Dinsberg | 17 | son | — | Connecticut |
| 61 | Roslyn Dinsberg | 15 | daughter | — | Connecticut |
| 62 | Muriel Dinsberg | 11 | daughter | — | Connecticut |
| 63 | Stanley Haze | 51 | head | Motor Maker | Poland |
| 64 | Marcella Haze | 47 | wife | — | Poland |
| 65 | John Haze | 22 | son | Trucker | Connecticut |
| 66 | Sophia Haze | 19 | daughter | Laborer | Connecticut |
| 67 | Theodore Haze | 13 | son | — | Connecticut |
| 68 | Jennie De Rosa | 58 | head | — | Italy |
| 69 | Virginia De Rosa | 25 | daughter | Seamstress | Connecticut |
| 70 | Francis De Rosa | 21 | daughter | Over Rubber | Connecticut |
| 71 | James De Rosa | 18 | son | Painter | Connecticut |
| 72 | Charles De Rosa | 16 | son | — | Connecticut |
| 73 | Frank Vitovsky | 27 | head | Tire Heater | Connecticut |
| 74 | Amelia Vitovsky | 22 | wife | — | Connecticut |
| 75 | Beryl Vitovsky | 1 | daughter | — | Connecticut |
| 76 | Andrew Flanagan | 31 | head | Grain Dealer | Connecticut |
| 77 | Evelyn Flanagan | 27 | wife | — | Connecticut |
| 78 | Charles Flanagan | 5 | son | — | Connecticut |
| 79 | Edward Flanagan | 64 | father | — | Connecticut |
| 80 | Mary Flanagan | 61 | mother | — | Connecticut |
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)