HW
Harold Wilson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Union-County, South Dakota
Our Model Tree links this Harold Wilson across the 1920, 1930 and 1940 US Censuses in Union-County, South Dakota (XGBoost, ~Confirmed), with identified parents Gust & Helma — first a son (b.~1914), then head of a 5-person household.
Age 26
b. ~1914
Male
Son
Born: South Dakota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Union-County, South Dakota |
| Surname | WILSON |
| Given Name | HAROLD (W) |
| Relationship to Head | SON |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | South Dakota |
| 1935 Residence (City) | Alcester township |
| 1935 Residence (County) | Union |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | C 2 |
| 1935 Residence | Same place |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
| Township / Ward | Alcester Township |
| Est. Birth Year | ~1914 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Harold | Age | Birth yr |
|---|---|---|---|---|
| Doris Wilson | Daughter | — | 21 | ~1919 |
| Gust Wilson | Head | — | 69 | ~1871 |
| Harold Wilson | Son | — | 26 | ~1914 |
| Bernard Wilson | Son | — | 24 | ~1916 |
| Helma Wilson | Spouse | — | 62 | ~1878 |
Census Appearances
1920
Union, South …
Son, age 6
Union, South Dakota · implied b. ~1914 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wilson |
| Given Name | Harold W |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | South Dakota |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Iowa |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
1930
Union, South …
Son, age 17
Union, South Dakota · implied b. ~1913 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wilson |
| Given Name | Harold W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | South Dakota |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Iowa |
| Occupation | Laborer |
| Industry | General Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
1940
Union-County, South …
Son, age 26
Union-County, South Dakota · implied b. ~1914 — 5 household members
| Surname | WILSON |
| Given Name | HAROLD (W) |
| Relationship to Head | SON |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | South Dakota |
| 1935 Residence (City) | Alcester township |
| 1935 Residence (County) | Union |
| Class of Worker | 0 |
| Highest Grade | C 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 Harold Wilson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Gust Wilson (~0.92 confidence) and mother Helma Wilson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Gust Wilson
b. ~1871
Source father
● Household
· direct · ~0.92
Mother
Helma Wilson
b. ~1876
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harold Wilson
Son · 1940 · age 26 · b. ~1914 · South Dakota
★ You are viewing this record
Sibling
Doris Wilson
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernard Wilson
Sibling · 1940 · age 24
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 — Union-County, South Dakota
Open full size
1940 US Federal Census — Union-County, South Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03869-00029)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Wilma Sternquist | 19 | Daughter | — | South Dakota |
| 2 | Orland Sternquist | 18 | SON | Farming | South Dakota |
| 3 | Arla Sternquist | 15 | Daughter | — | South Dakota |
| 4 | Vernon Swanson | 32 | HEAD | Farming | Iowa |
| 5 | Verna Swanson | 22 | WIFE | — | South Dakota |
| 6 | Arthur Swanson | 3 | SON | — | South Dakota |
| 7 | Ramon Swanson | 2 | SON | — | South Dakota |
| 8 | Blenda Swanson | 72 | HEAD | — | Sweden |
| 9 | Esther Swanson | 42 | Daughter | — | Iowa |
| 10 | Anton L. Peterson | 63 | HEAD | Farmer | Sweden |
| 11 | Ertia Peterson | 61 | WIFE | — | South Dakota |
| 12 | Lewis Peterson | 29 | SON | Farmer | South Dakota |
| 13 | Vivian Peterson | 23 | Daughter-in-law | — | South Dakota |
| 14 | Gust Wilson | 69 | HEAD | Farmer | Sweden |
| 15 | Helma Wilson | 62 | Wife | — | Iowa |
| 16 | Harold (W) Wilson THIS PERSON | 26 | SON | — | South Dakota |
| 17 | Bernard Wilson | 24 | SON | Farmer | South Dakota |
| 18 | Doris Wilson | 21 | Daughter | — | South Dakota |
| 19 | Peter John Peterson | 79 | HEAD | — | Sweden |
| 20 | Bertha S. Peterson | 64 | WIFE | — | Sweden |
| 21 | Carl Willard Peterson | 31 | SON | Farmer | South Dakota |
| 22 | Albert Peterson | 65 | BROTHER | Farmer | Kansas |
| 23 | Winfield Johnson | 39 | HEAD | Farmer | Kansas |
| 24 | Amy Johnson | 42 | Wife | — | South Dakota |
| 25 | Helen Johnson | 14 | Daughter | — | South Dakota |
| 26 | Winfield, Jr. Johnson | 9 | SON | — | South Dakota |
| 27 | Roger Johnson | 7 | SON | — | South Dakota |
| 28 | Dean Johnson | 5 | SON | — | South Dakota |
| 29 | Albert Carpenter | 51 | HEAD | Farmer | South Dakota |
| 30 | Ester Carpenter | 46 | wife | — | South Dakota |
| 31 | Gordon Carpenter | 23 | SON | Farming | South Dakota |
| 32 | Clifton Waddell | 30 | HEAD | Farmer | Nebraska |
| 33 | Lois Waddell | 23 | wife | — | South Dakota |
| 34 | Karen Joy Waddell | 0 | Daughter | — | South Dakota |
| 35 | Clarence Carlson | 39 | HEAD | Farmer | Illinois |
| 36 | Gertrude Carlson | 39 | Wife | — | Illinois |
| 37 | Jean Carlson | 13 | Daughter | — | South Dakota |
| 38 | Ruth Carlson | 11 | Daughter | — | South Dakota |
| 39 | Rodney Carlson | 8 | SON | — | South Dakota |
| 40 | Robert Carlson | 2 | SON | — | South Dakota |
Related Census Records
Pedigree Summary
Harold + 2 siblings
Gen 1 · 2 parents
~0.92
Max depth 4 (1900–1950 window)
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)