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John Gustafson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Brown-County, South Dakota
Our Model Tree links this John Gustafson across the 1920, 1930 and 1940 US Censuses in Brown-County, South Dakota (XGBoost, ~Confirmed) — first a head (b.~1881), then head of a 4-person household.
Age 59
b. ~1881
Male
Head
Born: Finland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Brown-County, South Dakota |
| Surname | Gustafson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 59 |
| Marital Status | Married |
| Birthplace | Finland |
| 1935 Residence (City) | Frederick township |
| 1935 Residence (County) | Brown |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | E |
| Hours Worked | 52 |
| Income (1939) | 0 |
| Highest Grade | No 3 |
| 1935 Residence | Same house |
| Birth Country | Finland |
| Birthplace (normalized) | finland |
| Occupation | Farmer |
| Township / Ward | Frederick Township |
| Est. Birth Year | ~1881 |
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 |
|---|---|---|---|---|
| Glenn Gustafson | Son | — | 13 | ~1927 |
| John Gustafson | Head | — | 59 | ~1881 |
| Helmi Gustafson | Spouse | — | 48 | ~1892 |
| Donald Gustafson | Son | — | 20 | ~1920 |
Census Appearances
1920
Brown, South …
Head, age 39
Brown, South Dakota · implied b. ~1881 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gustafson |
| Given Name | John G. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Finland |
| Year of Immigration | 1891 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Finland |
| Mother's Birthplace | Finland |
| Occupation | Farmer |
| Industry | Gen'l Farm |
| Class of Worker | Em |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Finnish |
| Home Owned/Rented | R |
| Birth Country | Finland |
| Year of Naturalization | 1905 |
| Birthplace (normalized) | finland |
1930
Brown, South …
Head, age 50
Brown, South Dakota · implied b. ~1880 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gustafson |
| Given Name | John G. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Finland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1891 |
| Age at First Marriage | 28 |
| Father's Birthplace | Finland |
| Mother's Birthplace | Finland |
| Occupation | Farmer |
| Industry | Own Farm |
| Class of Worker | O |
| Can Read/Write | Yes |
| Mother Tongue | Finnish |
| Home Owned/Rented | O |
| Veteran | No |
| Birth Country | Finland |
| Birthplace (normalized) | finland |
1940
Brown-County, South …
Head, age 59
Brown-County, South Dakota · implied b. ~1881 — 4 household members
| Surname | Gustafson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 59 |
| Marital Status | Married |
| Birthplace | Finland |
| 1935 Residence (City) | Frederick township |
| 1935 Residence (County) | Brown |
| Naturalization Status | Naturalized |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | E |
| Hours Worked | 52 |
| Income (1939) | 0 |
| Highest Grade | No 3 |
| 1935 Residence | Same house |
| Birth Country | Finland |
| Birthplace (normalized) | finland |
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 Gustafson 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 Gustafson
Head · 1940 · age 59 · b. ~1881 · South Dakota
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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 — Brown-County, South Dakota
Open full size
1940 US Federal Census — Brown-County, South Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03849-00614)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Bernard Hamilton | 37 | Head | Farmer | Iowa |
| 2 | Elva Hamilton | 37 | Wife | — | Illinois |
| 3 | Leone Hamilton | 16 | Daughter | — | South Dakota |
| 4 | Maurice Hamilton | 13 | Son | — | South Dakota |
| 5 | Dean Hamilton | 11 | Son | — | South Dakota |
| 6 | Melva Hamilton | 8 | Daughter | — | South Dakota |
| 7 | Newton D. Atkins | 73 | Head | Farmer | Massachusetts |
| 8 | Warren Atkins | 74 | Brother | — | Massachusetts |
| 9 | Celia Atkins | 66 | Sister | — | Indiana |
| 10 | Ernest Tiepler | 32 | Head | Farmer | South Dakota |
| 11 | Ann J. Tiepler | 31 | Wife | — | South Dakota |
| 12 | Melvina Tiepler | 7 | Daughter | — | South Dakota |
| 13 | Marvin Tiepler | 5 | Son | — | South Dakota |
| 14 | Frank Pence | 37 | Head | Farmer | South Dakota |
| 15 | Anna Pence | 40 | Wife | — | South Dakota |
| 16 | Eugene Pence | 11 | Son | — | South Dakota |
| 17 | Dorothy Pence | 9 | Daughter | — | South Dakota |
| 18 | Robert Pence | 7 | Son | — | South Dakota |
| 19 | Anton Moeller | 35 | Brother-in-law | Farmer | South Dakota |
| 20 | Robert L. Harmon | 52 | Hired man | Laborer | South Dakota |
| 21 | John E. Forder | 55 | Head | Farmer | South Dakota |
| 22 | Ethel E. Forder | 51 | Wife | — | Illinois |
| 23 | John R. Jr. Forder | 21 | Son | Laborer | South Dakota |
| 24 | Paul Forder | 17 | Son | Laborer | South Dakota |
| 25 | John Gustafson THIS PERSON | 59 | Head | Farmer | Finland |
| 26 | Helmi Gustafson | 48 | Wife | — | South Dakota |
| 27 | Donald Gustafson | 20 | Son | Laborer | South Dakota |
| 28 | Glenn Gustafson | 13 | Son | — | South Dakota |
| 29 | Ben Pesio | 41 | Head | Farmer | South Dakota |
| 30 | Lempi E. Pesio | 39 | Wife | — | Finland |
| 31 | Grace Pesio | 15 | Daughter | — | South Dakota |
| 32 | Sulo Laurilla | 52 | Head | Farmer | Finland |
| 33 | Aina Laurilla | 49 | Wife | — | South Dakota |
| 34 | Alexander Mannu | 52 | Head | Farmer | South Dakota |
| 35 | Paul Lippo | 79 | Partner | — | Finland |
| 36 | Andrew Mattson | 52 | Head | Farmer | Norway |
| 37 | Elisabeth Johnson | 68 | Housekeeper | Housekeeper | Sweden |
| 38 | Edwin Peldo | 46 | Head | Farmer | South Dakota |
| 39 | Hilma Peldo | 42 | Wife | — | Minnesota |
| 40 | Erwin Peldo | 16 | Son | Laborer | South Dakota |
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)