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John Jensen — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hartford-County, Connecticut
Our Model Tree links this John Jensen across the 1920, 1930 and 1940 US Censuses in Hartford-County, Connecticut (XGBoost, ~Confirmed) — first a head (b.~1879), then head of a 4-person household.
Age 61
b. ~1879
Male
Head
Born: Denmark
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Hartford-County, Connecticut |
| Surname | Jensen |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Denmark |
| 1935 Residence (City) | Hartford |
| 1935 Residence (County) | Hartford |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | baker |
| Industry | bakery |
| Class of Worker | PW |
| Hours Worked | 84 |
| Income (1939) | 1920 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
| Occupation | Baker |
| Township / Ward | Hartford |
| Est. Birth Year | ~1879 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Alice Jensen | Daughter | — | 23 | ~1917 |
| John Jensen | Head | — | 61 | ~1879 |
| John Jensen | Son | — | 25 | ~1915 |
| Hazel Jensen | Spouse | — | 45 | ~1895 |
Census Appearances
1920
New London, …
Head, age 41
New London, Connecticut · implied b. ~1879 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jensen |
| Given Name | John S |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Denmark |
| Year of Immigration | 1901 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Ship Carpenter |
| Industry | Ship yard |
| 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
Hartford, Connecticut
Head, age 52
Hartford, Connecticut · implied b. ~1878 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jensen |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Denmark |
| Naturalization Status | Naturalized |
| Year of Immigration | 1895 |
| Age at First Marriage | 35 |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Baker |
| Industry | Baker Shop |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Danish |
| Home Owned/Rented | R |
| Home Value / Rent | 40 |
| Radio Set | R |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
1940
Hartford-County, Connecticut
Head, age 61
Hartford-County, Connecticut · implied b. ~1879 — 4 household members
| Surname | Jensen |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Denmark |
| 1935 Residence (City) | Hartford |
| 1935 Residence (County) | Hartford |
| Naturalization Status | Naturalized |
| Occupation | baker |
| Industry | bakery |
| Class of Worker | PW |
| Hours Worked | 84 |
| Income (1939) | 1920 |
| Highest Grade | No 4 |
| 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 John Jensen across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
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This person
Anchor record
John Jensen
Head · 1940 · age 61 · b. ~1879 · 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 — Hartford-County, Connecticut
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1940 US Federal Census — Hartford-County, Connecticut
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00537-00501)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joseph Rizzo | 70 | Father in law | 0 | Italy |
| 2 | Margaret Rizzo | 30 | Niece | Secretary | New York |
| 3 | Anthony Castellani | 63 | Head | Hod Carrier | Italy |
| 4 | Angeline Castellani | 51 | Wife | 0 | Italy |
| 5 | Fred Castellani | 27 | Son | Plasterer | Connecticut |
| 6 | Bernard Castellani | 20 | Son | Plasterer | Connecticut |
| 7 | Morris Castellani | 22 | Son | Plasterer | Connecticut |
| 8 | Humber Castellani | 14 | Son | 0 | Connecticut |
| 9 | Genevieve Castellani | 24 | Daughter | 0 | Connecticut |
| 10 | John Lynch | 31 | Head | — | Connecticut |
| 11 | Mabel Lynch | 31 | Wife | 0 | Connecticut |
| 12 | John Jr Lynch | 9 | Son | — | Connecticut |
| 13 | Edward Lynch | 8 | Son | — | Connecticut |
| 14 | James Lynch | 3 | Son | — | Connecticut |
| 15 | Michael Lynch | 1 | Son | — | Connecticut |
| 16 | Grace Lynch | 62 | Mother | Packer | Connecticut |
| 17 | Elsie Benton | 37 | Sister in law | Canoeist | Connecticut |
| 18 | Bartholomew Battistoni | 35 | Head | Dairy Work | Connecticut |
| 19 | Mary Battistoni | 34 | Wife | Assembler | Connecticut |
| 20 | Henry Onudo | 42 | Head | Proprietor | Connecticut |
| 21 | Aurelia Onudo | 42 | Wife | 0 | Connecticut |
| 22 | Henry Jr Onudo | 16 | Son | 0 | Connecticut |
| 23 | Robert Onudo | 14 | Son | 0 | Connecticut |
| 24 | Bernard Hanley | 47 | Head | Clerk | Connecticut |
| 25 | Bernice Hanley | 21 | Daughter | Stenographer | Connecticut |
| 26 | William Hanley | 20 | Son | Stock Clerk | Connecticut |
| 27 | Rose Hanley | 17 | Daughter | 0 | Connecticut |
| 28 | Muriel Hanley | 14 | Daughter | 0 | Connecticut |
| 29 | Bernard Hanley | 12 | Son | 0 | Connecticut |
| 30 | Elson Hathaway | 38 | Head | Special Invest. | Massachusetts |
| 31 | Beatrice Hathaway | 36 | Wife | Luncheonette | Massachusetts |
| 32 | Elson Hathaway | 13 | Son | — | Connecticut |
| 33 | Beverly Hathaway | 11 | Daughter | — | Connecticut |
| 34 | Robert Hathaway | 9 | Son | — | Connecticut |
| 35 | Florence Hathaway | 6 | Daughter | — | Connecticut |
| 36 | Joseph Mitchell | 56 | Uncle | Tool Hardener | Massachusetts |
| 37 | John Jensen THIS PERSON | 61 | Head | Baker | Denmark |
| 38 | Hazel Jensen | 45 | Wife | 0 | Connecticut |
| 39 | John Jr Jensen | 25 | Son | Baker | Connecticut |
| 40 | Alice Jensen | 23 | Daughter | Assembler | 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)