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John Swanson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Brule-County, South Dakota
Our Model Tree links this John Swanson across the 1930 and 1940 US Censuses in Brule-County, South Dakota (XGBoost, ~Confirmed) — first a son (b.~1921), then head of a 9-person household.
Age 19
b. ~1921
Male
Son
Born: South Dakota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Brule-County, South Dakota |
| Surname | Swanson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | South Dakota |
| 1935 Residence (City) | Cleveland Twp |
| 1935 Residence (County) | Brule |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 42 |
| Income (1939) | 888 |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
| Occupation | Farmer |
| Township / Ward | Cleveland Twp |
| Est. Birth Year | ~1921 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Helen Swanson | Daughter | — | 23 | ~1917 |
| Emil Swanson | Head | — | 54 | ~1886 |
| Glen Swanson | Son | — | 14 | ~1926 |
| Edwin Swanson | Son | — | 16 | ~1924 |
| John Swanson | Son | — | 19 | ~1921 |
| Lois Swanson | Son | — | 10 | ~1930 |
| Rudolph Swanson | Son | — | 20 | ~1920 |
| Walter Swanson | Son | — | 21 | ~1919 |
| Adeline Swanson | Spouse | — | 50 | ~1890 |
Census Appearances
1930
Brule, South …
Son, age 8
Brule, South Dakota · implied b. ~1922 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Swanson |
| Given Name | John J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | South Dakota |
| Father's Birthplace | Germany |
| Mother's Birthplace | South Dakota |
| Can Read/Write | Yes |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
1940
Brule-County, South …
Son, age 19
Brule-County, South Dakota · implied b. ~1921 — 9 household members
| Surname | Swanson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | South Dakota |
| 1935 Residence (City) | Cleveland Twp |
| 1935 Residence (County) | Brule |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 42 |
| Income (1939) | 888 |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
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 Swanson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Swanson
Son · 1940 · age 19 · b. ~1921 · South Dakota
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Sibling
Glen Swanson
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rudolph Swanson
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edwin Swanson
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Walter Swanson
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Swanson
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lois Swanson
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Brule-County, South Dakota
Open full size
1940 US Federal Census — Brule-County, South Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03849-00991)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lester Rozan | 32 | Head | Farmer | South Dakota |
| 2 | Blanche Rozan | 30 | Wife | — | South Dakota |
| 3 | Nilene Rozan | 5 | Daughter | — | — |
| 4 | Leonel Rozan | 3 | Son | — | — |
| 5 | Garnard Ashley | 29 | Head | Farmer | South Dakota |
| 6 | Rachel Ashley | 56 | Mother | — | Kansas |
| 7 | Gerrit Purcell | 54 | Head | Farmer | South Dakota |
| 8 | Laura Purcell | 48 | Wife | — | South Dakota |
| 9 | Raymond Purcell | 23 | Son | Farmer | South Dakota |
| 10 | Mildred Purcell | 26 | Daughter | Teacher | South Dakota |
| 11 | Emil R. Swanson | 54 | Head | Farmer | Germany |
| 12 | Adeline Swanson | 50 | Wife | — | South Dakota |
| 13 | Helen Swanson | 23 | Daughter | Teacher | South Dakota |
| 14 | Walter Swanson | 21 | Son | Farmer | South Dakota |
| 15 | Rudolph Swanson | 20 | Son | Farmer | South Dakota |
| 16 | John Swanson THIS PERSON | 19 | Son | Farmer | South Dakota |
| 17 | Edwin Swanson | 16 | Son | — | South Dakota |
| 18 | Glen Swanson | 14 | Son | — | South Dakota |
| 19 | Lois Swanson | 10 | Son | — | South Dakota |
| 20 | Ed Myers | 39 | Head | Farmer | Nebraska |
| 21 | Gladys Myers | 41 | Wife | — | South Dakota |
| 22 | Eilly Myers | 13 | Daughter | — | South Dakota |
| 23 | John Charles Myers | 11 | Son | — | South Dakota |
| 24 | Lowell Myers | 7 | Son | — | South Dakota |
| 25 | Altamae Myers | 5 | Daughter | — | — |
| 26 | George Talich | 31 | Lodger | Farmer | South Dakota |
| 27 | Charles Lake | 58 | Head | Farmer | Ohio |
| 28 | Grace Lake | 56 | Wife | — | Iowa |
| 29 | Robert Lake | 25 | Son | Farmer | South Dakota |
| 30 | William Lake | 19 | Son | Farmer | South Dakota |
| 31 | Ed Hora | 35 | Head | Farmer | South Dakota |
| 32 | Mildred Hora | 25 | Wife | — | South Dakota |
| 33 | Marlene Hora | 1 | Daughter | — | — |
| 34 | Anna Hora | 66 | Mother | — | Germany |
| 35 | John Machel | 48 | Head | Farmer | South Dakota |
| 36 | Regina Machel | 40 | Wife | — | South Dakota |
| 37 | Ralph Machel | 16 | Son | Farmer | South Dakota |
| 38 | Leonard Machel | 13 | Son | — | South Dakota |
| 39 | Henry Davelin | 40 | Head | Farmer | South Dakota |
| 40 | Beth Davelin | 39 | Wife | Teacher | 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)