RC
Ralph Clark — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Tripp-County, South Dakota
Our Model Tree links this Ralph Clark across the 1930 and 1940 US Censuses in Tripp-County, South Dakota (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 7-person household.
Age 13
b. ~1927
Male
Son
Born: Nebraska
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Tripp-County, South Dakota |
| Surname | Clark |
| Given Name | Ralph L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Nebraska |
| 1935 Residence (City) | Willow Creek Township |
| 1935 Residence (County) | Tripp |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
| Township / Ward | Willow Creek Township |
| Est. Birth Year | ~1927 |
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 Ralph | Age | Birth yr |
|---|---|---|---|---|
| Abbie Clark | Spouse | — | 34 | ~1906 |
| Ralph Clark | Son | — | 13 | ~1927 |
| Daisy Clark | Daughter | — | 4 | ~1936 |
| William Clark | Son | — | 6 | ~1934 |
| Lillian Clark | Daughter | — | 11 | ~1929 |
| Melvin Clark | Son | — | 1 | ~1939 |
| Bertie Clark | Head | — | 36 | ~1904 |
Census Appearances
1930
Tripp, South …
Son, age 3
Tripp, South Dakota · implied b. ~1927 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Ralph L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Nebraska |
| Father's Birthplace | South Dakota |
| Mother's Birthplace | Nebraska |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
1940
Tripp-County, South …
Son, age 13
Tripp-County, South Dakota · implied b. ~1927 — 7 household members
| Surname | Clark |
| Given Name | Ralph L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Nebraska |
| 1935 Residence (City) | Willow Creek Township |
| 1935 Residence (County) | Tripp |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
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 Ralph Clark across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Ralph Clark
Son · 1940 · age 13 · b. ~1927 · South Dakota
★ You are viewing this record
Sibling
William Clark
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Melvin Clark
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daisy Clark
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lillian Clark
Sibling · 1940 · age 11
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 — Tripp-County, South Dakota
Open full size
1940 US Federal Census — Tripp-County, South Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03868-00638)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charles G. Stroschine | 55 | Head | Farmer | Germany |
| 2 | Millie O. Stroschine | 51 | Wife | — | Wisconsin |
| 3 | John D. Stroschine | 20 | Son | Farm Laborer | So. Dakota |
| 4 | Claire D. Stroschine | 16 | Daughter | Housework | So. Dakota |
| 5 | Robert R. Stroschine | 14 | Son | Farm Laborer | So. Dakota |
| 6 | Bertie S. Clark | 36 | Head | Farmer | North Dakota |
| 7 | Abbie Clark | 34 | Wife | — | Nebraska |
| 8 | Ralph L. Clark THIS PERSON | 13 | Son | — | Nebraska |
| 9 | Lillian B. Clark | 11 | Daughter | — | Nebraska |
| 10 | William A. Clark | 6 | Son | — | Nebraska |
| 11 | Daisy B. Clark | 4 | Daughter | — | Nebraska |
| 12 | Melvin L. Clark | 1 | Son | — | So. Dakota |
| 13 | Frank Cornemann | 57 | Head | Farmer | Nebraska |
| 14 | Isabelle M. Cornemann | 51 | Wife | — | Iowa |
| 15 | Robert H. Cornemann | 16 | Son | — | So. Dakota |
| 16 | Leslie B. Ziegler | 66 | Head | Farmer | Pennsylvania |
| 17 | Jessie I. Ziegler | 53 | Wife | — | Iowa |
| 18 | Leonard B. Ziegler | 16 | Son | — | So. Dakota |
| 19 | Leona B. Ziegler | 16 | Daughter | — | So. Dakota |
| 20 | Frederick J. Kollman | 61 | Head | Farmer | Ohio |
| 21 | Fannie E. Kollman | 51 | Wife | — | Nebraska |
| 22 | Aaron E. Kollman | 31 | Son | Farm Laborer | Nebraska |
| 23 | Bernard W. Kollman | 28 | Son | Farmer | So. Dakota |
| 24 | Jerry Franck | 54 | Head | Farmer | Nebraska |
| 25 | Emma Franck | 53 | Wife | — | Nebraska |
| 26 | Rose M. Franck | 19 | Daughter | Clerking | So. Dakota |
| 27 | William J. Wood | 59 | Head | Farmer | Iowa |
| 28 | Iva F. Wood | 58 | Wife | — | Iowa |
| 29 | Marcie M. Wood | 19 | Daughter | Teaching | So. Dakota |
| 30 | Marie E. Wood | 19 | Daughter | Teaching | So. Dakota |
| 31 | John E. Peterson | 71 | Head | Farmer | Norway |
| 32 | Nellie Peterson | 68 | Wife | — | Minnesota |
| 33 | Walter O. Heckmann | 48 | Head | Farmer | Illinois |
| 34 | Ethel L. Heckmann | 41 | Wife | — | Nebraska |
| 35 | Charles W. Heckmann | 21 | Son | Domestic | So. Dakota |
| 36 | Ruth E. Heckmann | 17 | Daughter | Janitor | So. Dakota |
| 37 | Betty J. Heckmann | 15 | Daughter | — | So. Dakota |
| 38 | Dorothy J. Heckmann | 14 | Daughter | — | So. Dakota |
| 39 | Joseph Schmidt | 36 | Head | Farmer | Russia |
| 40 | Amelia Schmidt | 32 | Wife | — | So. 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)