ET
Eugene Thompson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Brookings-County, South Dakota
Our Model Tree links this Eugene Thompson across the 1930 and 1940 US Censuses in Brookings-County, South Dakota (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 9-person household.
Age 12
b. ~1928
Male
Son
Born: South Dakota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Brookings-County, South Dakota |
| Surname | Thompson |
| Given Name | Eugene |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | South Dakota |
| 1935 Residence (City) | Brookings |
| 1935 Residence (County) | Brookings |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
| Township / Ward | Brookings |
| Est. Birth Year | ~1928 |
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 Eugene | Age | Birth yr |
|---|---|---|---|---|
| Edna Thompson | Spouse | — | 42 | ~1898 |
| Doreen Thompson | Daughter | — | 9 | ~1931 |
| Martin Thompson | Head | — | 40 | ~1900 |
| Beverley Thompson | Daughter | — | 14 | ~1926 |
| Dawn Thompson | Daughter | — | 4 | ~1936 |
| Duane Thompson | Son | — | 1 | ~1939 |
| Dale Thompson | Son | — | 7 | ~1933 |
| Eugene Thompson | Son | — | 12 | ~1928 |
| Marlys Thompson | Daughter | — | 3 | ~1937 |
Census Appearances
1930
Brookings, South …
Son, age 2
Brookings, South Dakota · implied b. ~1928 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Eugene |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | South Dakota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | South Dakota |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
1940
Brookings-County, South …
Son, age 12
Brookings-County, South Dakota · implied b. ~1928 — 9 household members
| Surname | Thompson |
| Given Name | Eugene |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | South Dakota |
| 1935 Residence (City) | Brookings |
| 1935 Residence (County) | Brookings |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| 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 Eugene Thompson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Eugene Thompson
Son · 1940 · age 12 · b. ~1928 · South Dakota
★ You are viewing this record
Sibling
Beverley Thompson
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marlys Thompson
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dale Thompson
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dawn Thompson
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Duane Thompson
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doreen Thompson
Sibling · 1940 · age 9
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 — Brookings-County, South Dakota
Open full size
1940 US Federal Census — Brookings-County, South Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03848-00496)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Eyvonne Laden | 8 | daughter | — | South Dakota |
| 2 | Rae Laden | 7 | daughter | — | South Dakota |
| 3 | William Barrett | 52 | Head | Trucker | South Dakota |
| 4 | Myrtle Barrett | 48 | wife | Servant | South Dakota |
| 5 | Thomas Barrett | 22 | son | Truck Driver | South Dakota |
| 6 | Frank Barrett | 20 | son | Truck Driver | South Dakota |
| 7 | Willard Barrett | 18 | son | Truck Driver | South Dakota |
| 8 | Dale Marie Barrett | 17 | daughter | — | South Dakota |
| 9 | Rosalie Barrett | 11 | daughter | — | South Dakota |
| 10 | Gaylord Barrett | 27 | Head | Truck Driver | South Dakota |
| 11 | Lorraine Barrett | 19 | wife | — | South Dakota |
| 12 | Sadie Brooks | 58 | Head | — | Minnesota |
| 13 | George Brooks | 31 | son | Clerk | South Dakota |
| 14 | Edith Brooks | 24 | daughter in law | — | Iowa |
| 15 | Hilburn Allen | 34 | Head | Carpenter | South Dakota |
| 16 | Violet Allen | 34 | wife | — | South Dakota |
| 17 | Darleen Allen | 12 | daughter | — | South Dakota |
| 18 | Charlotte Allen | 11 | daughter | — | South Dakota |
| 19 | Hilda Mertz | 74 | Head | — | Norway |
| 20 | Lawrence Friedel | 34 | Head | Laborer | South Dakota |
| 21 | Rosetta Friedel | 20 | wife | — | South Dakota |
| 22 | Melvin Friedel | 2 | son | — | South Dakota |
| 23 | Harry Nielsen | 29 | Head | Laborer | Iowa |
| 24 | Florence Nielsen | 22 | wife | — | South Dakota |
| 25 | Martin Thompson | 40 | Head | Manager | Minnesota |
| 26 | Edna Thompson | 42 | wife | — | South Dakota |
| 27 | Beverley Thompson | 14 | daughter | — | South Dakota |
| 28 | Eugene Thompson THIS PERSON | 12 | son | — | South Dakota |
| 29 | Doreen Thompson | 9 | daughter | — | South Dakota |
| 30 | Dale Thompson | 7 | son | — | South Dakota |
| 31 | Dawn Thompson | 4 | daughter | — | South Dakota |
| 32 | Marlys Thompson | 3 | daughter | — | South Dakota |
| 33 | Duane Thompson | 1 | son | — | South Dakota |
| 34 | J. E. Hard | 43 | Head | Carpenter | Missouri |
| 35 | Beulah Hard | 27 | wife | — | South Dakota |
| 36 | Donald Hard | 6 | son | — | South Dakota |
| 37 | Clifford Hard | 3 | son | — | South Dakota |
| 38 | Gerald Hard | 1 | son | — | South Dakota |
| 39 | Arthur Bebo | 50 | Head | Laborer | Wisconsin |
| 40 | Olga Bebo | 46 | wife | — | Iowa |
Related Census Records
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)