MF
Mildred Foster — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Clark-County, South Dakota
Our Model Tree links this Mildred Foster across the 1930 and 1940 US Censuses in Clark-County, South Dakota (XGBoost, ~Confirmed) — first a spouse (b.~1902), then head of a 7-person household.
Age 38
b. ~1902
Female
Spouse
Born: Minnesota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Clark-County, South Dakota |
| Surname | Foster |
| Given Name | Mildred N. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | Mt. Pleasant township |
| 1935 Residence (County) | Clark |
| Additional Details | |
| Highest Grade | No 10 |
| 1935 Residence | Same house |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Township / Ward | Mt Pleasant Township |
| Est. Birth Year | ~1902 |
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 Mildred | Age | Birth yr |
|---|---|---|---|---|
| Mildred Foster | Spouse | — | 38 | ~1902 |
| Edwin Foster | Son | — | 3 | ~1937 |
| Robert Foster | Son | — | 8 | ~1932 |
| Ramsey Foster | Son | — | 6 | ~1934 |
| John Foster | Head | — | 34 | ~1906 |
| Henry Foster | Son | — | 4 | ~1936 |
| John Foster | Son | — | 10 | ~1930 |
Census Appearances
1930
Clark, South …
Spouse, age 28
Clark, South Dakota · implied b. ~1902 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Foster |
| Given Name | Mildred N. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Minnesota |
| Age at First Marriage | 27 |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Minnesota |
| Can Read/Write | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Clark-County, South …
Spouse, age 38
Clark-County, South Dakota · implied b. ~1902 — 7 household members
| Surname | Foster |
| Given Name | Mildred N. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | Mt. Pleasant township |
| 1935 Residence (County) | Clark |
| Highest Grade | No 10 |
| 1935 Residence | Same house |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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 Mildred Foster across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mildred Foster
Spouse · 1940 · age 38 · b. ~1902 · South Dakota
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Clark-County, South Dakota
Open full size
1940 US Federal Census — Clark-County, South Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03851-00618)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Newman S. French | 51 | Head | Farmer | Illinois |
| 2 | Zaida French | 50 | Wife | — | So. Dak. |
| 3 | Lois French | 24 | Daughter | — | So. Dak. |
| 4 | Loma French | 23 | Daughter | — | So. Dak. |
| 5 | Raymond Kirkeby | 24 | Hired help | Farm Laborer | So. Dak. |
| 6 | Carl Clyde | 45 | Head | Farmer | So. Dak. |
| 7 | Dora Clyde | 39 | Wife | — | So. Dak. |
| 8 | Coralyne Clyde | 17 | Daughter | N.Y.A. | So. Dak. |
| 9 | Gilbert Clyde | 15 | Son | Farm Laborer | So. Dak. |
| 10 | Madeline Clyde | 11 | Daughter | — | So. Dak. |
| 11 | Sharron Clyde | 8 | Daughter | — | So. Dak. |
| 12 | Robert Clyde | 2 | Son | — | So. Dak. |
| 13 | Madonna Clyde | 0 | Daughter | — | So. Dak. |
| 14 | Fred J. Gottleben | 61 | Head | Farmer | Illinois |
| 15 | Bertha Gottleben | 62 | Wife | — | Wisc. |
| 16 | Charles Gottleben | 31 | Son | Farm Laborer | So. Dak. |
| 17 | Geo. Sherbondy | 48 | Brother in law | Farm Laborer | Iowa |
| 18 | Lloyd H. Sprouse | 38 | Head | Farmer | Minnesota |
| 19 | Lydia W. Sprouse | 65 | Mother | — | Illinois |
| 20 | Leonard H. Sprouse | 31 | Brother | Farm Laborer | Missouri |
| 21 | Raymond M. Sprouse | 26 | Brother | Farm Laborer | So. Dak. |
| 22 | John J. Thiele | 39 | Head | Farmer | Iowa |
| 23 | Alice R. Thiele | 38 | Wife | — | Sweden |
| 24 | Betty Gale Thiele | 14 | Daughter | — | So. Dak. |
| 25 | Joyce D. Thiele | 12 | Daughter | — | So. Dak. |
| 26 | Jerry Lee Thiele | 9 | Son | — | So. Dak. |
| 27 | Lois M. Thiele | 7 | Daughter | — | So. Dak. |
| 28 | Jacquin R. Thiele | 4 | Daughter | — | So. Dak. |
| 29 | Ernest A. Evans | 50 | Head | Farmer | So. Dak. |
| 30 | Clair Evans | 38 | Wife | — | So. Dak. |
| 31 | Ernestine G. Evans | 16 | Daughter | — | So. Dak. |
| 32 | Clarine Mae Evans | 11 | Daughter | — | So. Dak. |
| 33 | John B. Foster | 34 | Head | Farmer | So. Dak. |
| 34 | Mildred N. Foster THIS PERSON | 38 | Wife | — | Minnesota |
| 35 | John W. Foster | 10 | Son | — | So. Dak. |
| 36 | Robert K. Foster | 8 | Son | — | So. Dak. |
| 37 | Ramsey M. Foster | 6 | Son | — | So. Dak. |
| 38 | Henry R. Foster | 4 | Son | — | So. Dak. |
| 39 | Edwin A. Foster | 3 | Son | — | So. Dak. |
| 40 | Hodge C. Whetzel | 36 | Head | Farmer | 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)