WJ
William Jensen — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Kings-County, New York
Our Model Tree links this William Jensen across the 1920, 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed) — first a head (b.~1887), then head of a 4-person household.
Age 53
b. ~1887
Male
Head
Born: Denmark
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Kings-County, New York |
| Surname | Jensen |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Denmark |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Machinist |
| Industry | Die + Casting |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
| Occupation | Machinist |
| Township / Ward | New York City |
| Est. Birth Year | ~1887 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Jensen | Head | — | 53 | ~1887 |
| Edith Jensen | Daughter | — | 15 | ~1925 |
| Margaret Jensen | Spouse | — | 53 | ~1887 |
| Emil Jensen | Son | — | 31 | ~1909 |
Census Appearances
1920
Kings, New …
Head, age 34
Kings, New York · implied b. ~1886 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jensen |
| Given Name | William P. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Denmark |
| Year of Immigration | 1904 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Engineer |
| Industry | Marine |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Danish |
| Home Owned/Rented | R |
| Birth Country | Denmark |
| Year of Naturalization | 1910 |
| Birthplace (normalized) | denmark |
1930
Kings, New …
Head, age 45
Kings, New York · implied b. ~1885 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jensen |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Denmark |
| Naturalization Status | Naturalized |
| Year of Immigration | 1905 |
| Age at First Marriage | 24 |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Engineer |
| Industry | Oil boat |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Danish |
| Home Owned/Rented | R |
| Home Value / Rent | 55 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
1940
Kings-County, New …
Head, age 53
Kings-County, New York · implied b. ~1887 — 4 household members
| Surname | Jensen |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Denmark |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Naturalization Status | Naturalized |
| Occupation | Machinist |
| Industry | Die + Casting |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
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 William Jensen across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
William Jensen
Head · 1940 · age 53 · b. ~1887 · New York
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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 — Kings-County, New York
Open full size
1940 US Federal Census — Kings-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02567-00242)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Sedonna Ghelardi | 68 | Head | Laundry | Italy |
| 2 | Natalie Ghelardi | 56 | Wife | — | Italy |
| 3 | Eva Ghelardi | 39 | Daughter | — | New York |
| 4 | Anthony Ghelardi | 27 | Son | Laundry Worker | New York |
| 5 | Albert Ghelardi | 40 | Head | Laundry | New York |
| 6 | Anna Ghelardi | 37 | Wife | — | New York |
| 7 | Anne Ghelardi | 13 | Daughter | — | New York |
| 8 | Geraldine Ghelardi | 9 | Daughter | — | New York |
| 9 | Mary Ghelardi | 5 | Daughter | — | New York |
| 10 | Angelo Ghelardi | 35 | Head | Porter | New York |
| 11 | April Ghelardi | 29 | Wife | — | Italy |
| 12 | Gloria Ghelardi | 8 | Daughter | — | New York |
| 13 | Edmond Gray | 64 | Head | Retired | New York |
| 14 | Gertrude Gray | 57 | Wife | — | New York |
| 15 | Theresa Mcguire | 34 | Wife | — | New York |
| 16 | John John | 38 | Head | Lieutenant | New York |
| 17 | John John | 10 | Son | — | New York |
| 18 | Peter John | 9 | Son | — | New York |
| 19 | Gertrude John | 8 | Daughter | — | New York |
| 20 | George Gampola | 33 | Head | Sweeper | New York |
| 21 | Mary Gampola | 38 | Wife | — | New York |
| 22 | Mary Gampola | 15 | Daughter | — | New York |
| 23 | Helen Gampola | 12 | Daughter | — | New York |
| 24 | Pasquale Gentilo | 53 | Head | Fruit Store | Italy |
| 25 | Margaret Gentilo | 52 | Wife | — | Italy |
| 26 | Grace Gentilo | 24 | Daughter | Instructor | New York |
| 27 | Cosmo Gentilo | 22 | Son | Shipping Clerk | New York |
| 28 | Charles Gentilo | 17 | Son | — | New York |
| 29 | Martin Murphy | 60 | Head | Oiler | New York |
| 30 | Elizabeth Murphy | 57 | Wife | — | Pa |
| 31 | William Jensen THIS PERSON | 53 | Head | Machinist | Denmark |
| 32 | Margaret Jensen | 53 | Wife | — | Denmark |
| 33 | Emil Jensen | 31 | Son | Operator | New York |
| 34 | Edith Jensen | 15 | Daughter | — | New York |
| 35 | Victor Franchini | 46 | Head | Butcher | New York |
| 36 | Gretta Franchini | 42 | Wife | — | Italy |
| 37 | Charles Franchini | 14 | Son | — | New York |
| 38 | Mary Franchini | 6 | Daughter | — | New York |
| 39 | Shirley Wallin | 75 | Boarder | — | New York |
| 40 | Paul Plancon | 53 | Head | Power Station | France |
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)