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John Jacobson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Rock-County, Wisconsin
Our Model Tree links this John Jacobson across the 1920, 1930 and 1940 US Censuses in Rock-County, Wisconsin (XGBoost, ~Confirmed) — first a head (b.~1866), then head of a 3-person household.
Age 74
b. ~1866
Male
Head
Born: Wisconsin
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Rock-County, Wisconsin |
| Surname | Jacobson |
| Given Name | John T. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 74 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Beloit City |
| Additional Details | |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | 7 |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Township / Ward | Beloit City |
| Est. Birth Year | ~1866 |
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 |
|---|---|---|---|---|
| Marie Jacobson | Spouse | — | 63 | ~1877 |
| John Jacobson | Head | — | 74 | ~1866 |
| Almon Jacobson | Son | — | 39 | ~1901 |
Census Appearances
1920
Rock, Wisconsin
Head, age 49
Rock, Wisconsin · implied b. ~1871 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jacobson |
| Given Name | John T |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 49 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | Emp |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1930
Rock, Wisconsin
Other, age 59
Rock, Wisconsin · implied b. ~1871 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jacobson |
| Given Name | John T. |
| Relationship to Head | Brother |
| Sex | M |
| Color / Race | White |
| Age | 59 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Farm Laborer |
| Industry | Gen Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Rock-County, Wisconsin
Head, age 74
Rock-County, Wisconsin · implied b. ~1866 — 3 household members
| Surname | Jacobson |
| Given Name | John T. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 74 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Beloit City |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | 7 |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
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 Jacobson 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 Jacobson
Head · 1940 · age 74 · b. ~1866 · Wisconsin
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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 — Rock-County, Wisconsin
Open full size
1940 US Federal Census — Rock-County, Wisconsin
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04519-00702)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Betty Bennett | 16 | Daughter | — | Wisconsin |
| 2 | John B. Goule | 77 | Head | — | Wisconsin |
| 3 | Hattie Goule | 65 | Wife | — | Illinois |
| 4 | Walter Lilbaugh | 35 | Head | Machinist | Nebraska |
| 5 | Wilma Lilbaugh | 29 | Wife | — | Wisconsin |
| 6 | Darrel Lilbaugh | 9 | Son | — | Wisconsin |
| 7 | Ruth Lilbaugh | 5 | Daughter | — | Wisconsin |
| 8 | Gust F. Klatt | 55 | Head | Oiler | Wisconsin |
| 9 | Sophie Klatt | 46 | Wife | — | Germany |
| 10 | Elenora Klatt | 15 | Daughter | — | Wisconsin |
| 11 | Roy Everson | 25 | Head | Machinist | Wisconsin |
| 12 | Emily Everson | 25 | Wife | — | Wisconsin |
| 13 | Ansel Russell | 36 | Head | Foreman | Wisconsin |
| 14 | Gladys Russell | 30 | Wife | — | Wisconsin |
| 15 | Gloria Russell | 5 | Daughter | — | Wisconsin |
| 16 | Sally Ann Russell | 4 | Daughter | — | Wisconsin |
| 17 | Sandra Sue Russell | 4 | Daughter | — | Wisconsin |
| 18 | Bruce P. Flora | 36 | Head | Laborer | Maryland |
| 19 | Matilda Flora | 33 | Wife | — | Northern Ireland |
| 20 | Bruce A. Flora | 7 | Son | — | Wisconsin |
| 21 | Paul Flora | 3 | Son | — | Wisconsin |
| 22 | Vere Ackerman | 40 | Head | Salvage | Wisconsin |
| 23 | Kathryn Ackerman | 34 | Wife | — | Minnesota |
| 24 | Francis Haney | 39 | Head | Foreman | Wisconsin |
| 25 | Edna Haney | 39 | Wife | — | Illinois |
| 26 | Rose Mary Haney | 19 | Daughter | — | Wisconsin |
| 27 | Thomas Haney | 15 | Son | — | Wisconsin |
| 28 | James Haney | 9 | Son | — | Wisconsin |
| 29 | — | None | — | — | — |
| 30 | Bruno Meyer | 60 | Head | Millwright | Germany |
| 31 | Emma Meyer | 57 | Wife | — | Germany |
| 32 | John T. Jacobson THIS PERSON | 74 | Head | — | Wisconsin |
| 33 | Marie Jacobson | 63 | Wife | — | Norway |
| 34 | Almon Jacobson | 39 | Son | Pattern Maker | Minnesota |
| 35 | John Schaffer | 62 | Head | Machinist | Wisconsin |
| 36 | Pearl Schaffer | 50 | Wife | — | Michigan |
| 37 | Henry R. Scott | 29 | Head | Machinist | Wisconsin |
| 38 | Ida Scott | 27 | Wife | Nursing | South Dakota |
| 39 | Dolores Scott | 10 | Daughter | — | Wisconsin |
| 40 | Phyllis Scott | 8 | Daughter | — | Wisconsin |
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)