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Mary Becker — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Dewey-County, South Dakota
Our Model Tree links this Mary Becker across the 1930 and 1940 US Censuses in Dewey-County, South Dakota (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 8-person household.
Age 12
b. ~1928
Female
Daughter
Born: South Dakota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Dewey-County, South Dakota |
| Surname | Becker |
| Given Name | Mary Lou |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | South Dakota |
| 1935 Residence (City) | Township Range |
| Additional Details | |
| Highest Grade | G 5 |
| 1935 Residence | Same House |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
| Township / Ward | Township Range |
| 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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Patricia Becker | Daughter | — | 5 | ~1935 |
| Darell Becker | Daughter | — | 3 | ~1937 |
| Mary Becker | Daughter | — | 12 | ~1928 |
| Marceline Becker | Daughter | — | 10 | ~1930 |
| Virginia Becker | Daughter | — | 7 | ~1933 |
| Charlotte Becker | Daughter | — | 9 | ~1931 |
| Ray Becker | Head | — | 43 | ~1897 |
| Margaret Becker | Spouse | — | 34 | ~1906 |
Census Appearances
1930
Dewey, South …
Daughter, age 2
Dewey, South Dakota · implied b. ~1928 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Becker |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | South Dakota |
| Father's Birthplace | Nebraska |
| Mother's Birthplace | North Dakota |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
1940
Dewey-County, South …
Daughter, age 12
Dewey-County, South Dakota · implied b. ~1928 — 8 household members
| Surname | Becker |
| Given Name | Mary Lou |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | South Dakota |
| 1935 Residence (City) | Township Range |
| Highest Grade | G 5 |
| 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 Mary Becker across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Becker
Daughter · 1940 · age 12 · b. ~1928 · South Dakota
★ You are viewing this record
Sibling
Marceline Becker
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charlotte Becker
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Virginia Becker
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Becker
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Darell Becker
Sibling · 1940 · age 3
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 — Dewey-County, South Dakota
Open full size
1940 US Federal Census — Dewey-County, South Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03854-00804)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary Fischer | 13 | Daughter | — | South Dakota |
| 42 | Dora Fischer | 11 | Daughter | — | South Dakota |
| 43 | Alice Fischer | 9 | Daughter | — | South Dakota |
| 44 | Paul Strong | 36 | Head | Sheep Farmer | Iowa |
| 45 | Alberta Strong | 28 | Wife | — | Missouri |
| 46 | Betty Lou Strong | 7 | Daughter | — | South Dakota |
| 47 | Lois Strong | 3 | Daughter | — | South Dakota |
| 48 | Elmer Johnson | 41 | Head | Farmer | Illinois |
| 49 | Zilla Johnson | 41 | Wife | — | Minnesota |
| 50 | Peter Axeland | 77 | Lodger | — | Norway |
| 51 | Emmanuel Hingman | 55 | Head | Farmer | South Dakota |
| 52 | Amelia Hingman | 49 | Wife | — | South Dakota |
| 53 | Iona Hingman | 17 | Daughter | — | South Dakota |
| 54 | Viola Hingman | 16 | Daughter | — | South Dakota |
| 55 | Harrison Bailey | 47 | Head | Farmer | Iowa |
| 56 | Rosanna Bailey | 45 | Wife | — | Kansas |
| 57 | Rachel Bailey | 19 | Daughter | — | Iowa |
| 58 | Lucille Bailey | 18 | Daughter | — | Iowa |
| 59 | Sam Bailey | 12 | Son | — | South Dakota |
| 60 | James Bailey | 10 | Son | — | South Dakota |
| 61 | Ray Becker | 43 | Head | Farmer | Nebraska |
| 62 | Margaret Becker | 34 | Wife | — | North Dakota |
| 63 | Mary Lou Becker THIS PERSON | 12 | Daughter | — | South Dakota |
| 64 | Marceline Becker | 10 | Daughter | — | South Dakota |
| 65 | Charlotte Becker | 9 | Daughter | — | South Dakota |
| 66 | Virginia Becker | 7 | Daughter | — | South Dakota |
| 67 | Patricia Becker | 5 | Daughter | — | South Dakota |
| 68 | Darell Becker | 3 | Daughter | — | South Dakota |
| 69 | Amos Hutke | 48 | Head | Farmer | Nebraska |
| 70 | Chris Jensen | 39 | Head | Farmer | Nebraska |
| 71 | Bebe Jensen | 31 | Wife | — | Nebraska |
| 72 | Beulah Jensen | 9 | Daughter | — | South Dakota |
| 73 | Neil Jensen | 8 | Son | — | South Dakota |
| 74 | Roger Jensen | 6 | Son | — | South Dakota |
| 75 | Preston Jensen | 4 | Son | — | South Dakota |
| 76 | Marvin Jensen | 2 | Son | — | South Dakota |
| 77 | Joseph Boekman | 43 | Head | Farmer | Missouri |
| 78 | Ada Boekman | 40 | Wife | — | Nebraska |
| 79 | Dorothy Boekman | 16 | Daughter | — | South Dakota |
| 80 | Clifford Boekman | 11 | Son | — | South Dakota |
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)