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Alfred Thompson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Kingsbury-County, South Dakota
Our Model Tree links this Alfred Thompson across the 1930 and 1940 US Censuses in Kingsbury-County, South Dakota (XGBoost, ~Confirmed) — first a head (b.~1887), then head of a 7-person household.
Age 53
b. ~1887
Male
Head
Born: Norway
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Kingsbury-County, South Dakota |
| Surname | Thompson |
| Given Name | Alfred |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Norway |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Hand |
| Naturalization Status | First papers filed |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 500 |
| Highest Grade | H-4 |
| 1935 Residence | South Dakota |
| Birth Country | Norway |
| Birthplace (normalized) | norway |
| Occupation | Farmer |
| Township / Ward | Baker Township |
| 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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Alfred | Age | Birth yr |
|---|---|---|---|---|
| Mavis Thompson | Daughter | — | 11 | ~1929 |
| Olga Thompson | Spouse | — | 42 | ~1898 |
| Leora Thompson | Daughter | — | 7 | ~1933 |
| Marvel Thompson | Daughter | — | 9 | ~1931 |
| Duane Thompson | Son | — | 1 | ~1939 |
| Gladys Thompson | Daughter | — | 13 | ~1927 |
| Alfred Thompson | Head | — | 53 | ~1887 |
Census Appearances
1930
Kingsbury, South …
Head, age 44
Kingsbury, South Dakota · implied b. ~1886 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Alfred |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Norway |
| Naturalization Status | Naturalized |
| Year of Immigration | 1906 |
| Age at First Marriage | 35 |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Farmer |
| Industry | Gen Farm |
| Can Read/Write | Yes |
| Mother Tongue | Norwegian |
| Home Owned/Rented | R |
| Home Value / Rent | 3000 |
| Birth Country | Norway |
| Birthplace (normalized) | norway |
1940
Kingsbury-County, South …
Head, age 53
Kingsbury-County, South Dakota · implied b. ~1887 — 7 household members
| Surname | Thompson |
| Given Name | Alfred |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Norway |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Hand |
| Naturalization Status | First papers filed |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 500 |
| Highest Grade | H-4 |
| 1935 Residence | South Dakota |
| Birth Country | Norway |
| Birthplace (normalized) | norway |
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 Alfred Thompson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Alfred Thompson
Head · 1940 · age 53 · b. ~1887 · 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 — Kingsbury-County, South Dakota
Open full size
1940 US Federal Census — Kingsbury-County, South Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03859-00215)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Severin Peterson | 42 | Head | Farmer | South Dakota |
| 2 | Vera Peterson | 35 | Wife | — | South Dakota |
| 3 | Rodney Peterson | 7 | Son | — | South Dakota |
| 4 | Andrew Hommersand | 58 | Head | Farmer | Minnesota |
| 5 | Lena Hommersand | 54 | Wife | — | South Dakota |
| 6 | Marie Hommersand | 13 | Daughter | — | South Dakota |
| 7 | Orville Hommersand | 10 | Son | — | South Dakota |
| 8 | David Jr. Paterson | 47 | Head | Farmer | South Dakota |
| 9 | Madeline Paterson | 43 | Wife | — | Minnesota |
| 10 | David G. Iii Paterson | 21 | Son | Secretary | South Dakota |
| 11 | Lucille Paterson | 18 | Daughter | — | South Dakota |
| 12 | Laurel Paterson | 11 | Daughter | — | South Dakota |
| 13 | Jillian Paterson | 8 | Son | — | South Dakota |
| 14 | Delbert Kean | 58 | Head | Farmer | Iowa |
| 15 | Beatrice Kean | 55 | Wife | — | South Dakota |
| 16 | Dale Kean | 12 | Son | — | South Dakota |
| 17 | John Peterson | 57 | Head | Farmer | South Dakota |
| 18 | Jane Peterson | 84 | Mother | — | Scotland |
| 19 | Esther Anderson | 18 | Hired Hand | Housekeeper | South Dakota |
| 20 | Carl Bowman | 38 | Hired Hand | Laborer | Sweden |
| 21 | Tom P. Malone | 45 | Head | Farmer | Illinois |
| 22 | Marie Malone | 44 | Wife | — | South Dakota |
| 23 | Francis Malone | 10 | Son | — | South Dakota |
| 24 | Marion Malone | 8 | Daughter | — | South Dakota |
| 25 | Henry S. Rasmussen | 32 | Head | Farmer | Denmark |
| 26 | Lois Rasmussen | 26 | Wife | Secretary | South Dakota |
| 27 | Alfred Thompson THIS PERSON | 53 | Head | Farmer | Norway |
| 28 | Olga Thompson | 42 | Wife | — | Iowa |
| 29 | Gladys Thompson | 13 | Daughter | — | South Dakota |
| 30 | Mavis Thompson | 11 | Daughter | — | South Dakota |
| 31 | Marvel Thompson | 9 | Daughter | — | South Dakota |
| 32 | Leora Thompson | 7 | Daughter | — | South Dakota |
| 33 | Duane Thompson | 1 | Son | — | South Dakota |
| 34 | George J. Nelson | 39 | Head | Farmer | Minnesota |
| 35 | Mabel Nelson | 35 | Wife | — | North Dakota |
| 36 | Stanley Filcorn | 31 | Hired Hand | Laborer | South Dakota |
| 37 | Edwin Haugen | 21 | Hired Hand | Laborer | North Dakota |
| 38 | William E. Wilds | 66 | Head | Trucker | Iowa |
| 39 | Dena Wilds | 67 | Wife | — | Iowa |
| 40 | William F. Kierk | 47 | Head | Buyer | Illinois |
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)