CC
Clara Clark — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Brown-County, South Dakota
Our Model Tree links this Clara Clark across the 1930 and 1940 US Censuses in Brown-County, South Dakota (XGBoost, ~Confirmed) — first a spouse (b.~1895), then head of a 9-person household.
Age 45
b. ~1895
Female
Spouse
Born: South Dakota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Brown-County, South Dakota |
| Surname | Clark |
| Given Name | Clara H. B. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | South Dakota |
| 1935 Residence (City) | Aberdeen City |
| 1935 Residence (County) | Brown |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same House |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
| Township / Ward | Aberdeen City |
| Est. Birth Year | ~1895 |
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 Clara | Age | Birth yr |
|---|---|---|---|---|
| Donald Clark | Son | — | 16 | ~1924 |
| Richard Clark | Son | — | 7 | ~1933 |
| Valletta Clark | Daughter | — | 10 | ~1930 |
| Lawson Clark | Head | — | 46 | ~1894 |
| Doris Clark | Daughter | — | 12 | ~1928 |
| Marjorie Clark | Daughter | — | 17 | ~1923 |
| Ervin Clark | Son | — | 14 | ~1926 |
| Clara Clark | Spouse | — | 45 | ~1895 |
| Eleanor Clark | Daughter | — | 9 | ~1931 |
Census Appearances
1930
Brown, South …
Spouse, age 35
Brown, South Dakota · implied b. ~1895 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Clara H. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | South Dakota |
| Age at First Marriage | 27 |
| Father's Birthplace | Germany |
| Mother's Birthplace | England |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
1940
Brown-County, South …
Spouse, age 45
Brown-County, South Dakota · implied b. ~1895 — 9 household members
| Surname | Clark |
| Given Name | Clara H. B. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | South Dakota |
| 1935 Residence (City) | Aberdeen City |
| 1935 Residence (County) | Brown |
| Income (1939) | 0 |
| Highest Grade | Hs 1 |
| 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 Clara Clark across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Clara Clark
Spouse · 1940 · age 45 · b. ~1895 · 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
37 people indexed on this census page (nara:1940:m-t0627-03849-00025)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Marie M. Heiderthal | 38 | Wife | — | Texas |
| 42 | Kathleen Ann Heiderthal | 9 | Daughter | — | South Dakota |
| 43 | James L. Rothstein | 27 | Head | Salesman | Minnesota |
| 44 | Lucille V. Rothstein | 28 | Wife | — | South Dakota |
| 45 | James J. Rothstein | 2 | Son | — | South Dakota |
| 46 | Soren A. Johncke | 34 | Head | Salesman | Denmark |
| 47 | Mary E. Johncke | 35 | Wife | — | South Dakota |
| 48 | Mary Anne Johncke | 3 | Daughter | — | South Dakota |
| 49 | Lawson V. Clark | 46 | Head | Mechanic | Iowa |
| 50 | Clara H. B. Clark THIS PERSON | 45 | Wife | — | South Dakota |
| 51 | Marjorie E. Clark | 17 | Daughter | — | South Dakota |
| 52 | Donald H. Clark | 16 | Son | Laborer | South Dakota |
| 53 | Ervin A. Clark | 14 | Son | Laborer | South Dakota |
| 54 | Doris L. Clark | 12 | Daughter | — | South Dakota |
| 55 | Valletta Clark | 10 | Daughter | — | South Dakota |
| 56 | Eleanor A. Clark | 9 | Daughter | — | South Dakota |
| 57 | Richard L. Clark | 7 | Son | — | South Dakota |
| 58 | Richard W. Strohmeier | 74 | Head | Florist | Germany |
| 59 | Elizabeth Strohmeier | 87 | Wife | — | England |
| 60 | Alice G. Strohmeier | 41 | Daughter | — | South Dakota |
| 61 | Thomas J. Pattee | 50 | Head | Attendant | New York |
| 62 | Marguerite C. Pattee | 18 | Daughter | — | South Dakota |
| 63 | Blanche H. Pattee | 11 | Daughter | — | South Dakota |
| 64 | Thomas J. Jr. Pattee | 5 | Son | — | South Dakota |
| 65 | Emma M. Breslin | 45 | Maid | Maid | Wisconsin |
| 66 | Charles H. Wilson | 45 | Head | Dentist | South Dakota |
| 67 | Dorothy J. Wilson | 44 | Wife | — | South Dakota |
| 68 | Cassell A. Wilson | 21 | Daughter | Publications Bureau | South Dakota |
| 69 | Ronald H. Wilson | 20 | Son | Clerk | South Dakota |
| 70 | Priscilla Wilson | 15 | Daughter | — | South Dakota |
| 74 | Ida D. Burnham | 74 | Head | — | Wisconsin |
| 75 | James H. King | 45 | Head | Dentist | South Dakota |
| 76 | Miriam H. King | 45 | Wife | — | Iowa |
| 77 | King | 14 | Daughter | — | South Dakota |
| 78 | James H. Jr. King | 7 | Son | — | South Dakota |
| 79 | Carl A. Beller | 38 | Head | Partner | Wisconsin |
| 80 | Ada Mae Beller | 38 | Wife | — | South Dakota |
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)