MF
Mary Fischer — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hyde-County, South Dakota
Our Model Tree links this Mary Fischer across the 1930 and 1940 US Censuses in Hyde-County, South Dakota (XGBoost, ~Confirmed) — first a spouse (b.~1907), then head of a 8-person household.
Age 33
b. ~1907
Female
Spouse
Born: South Dakota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Hyde-County, South Dakota |
| Surname | Fischer |
| Given Name | Mary B |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | South Dakota |
| 1935 Residence (City) | Bramhall township |
| 1935 Residence (County) | Hyde |
| Additional Details | |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
| Township / Ward | Bramhall Township |
| Est. Birth Year | ~1907 |
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 |
|---|---|---|---|---|
| Mary Fischer | Spouse | — | 33 | ~1907 |
| Leonard Fischer | Son | — | 12 | ~1928 |
| Marlen Fischer | Son | — | 10 | ~1930 |
| Doris Fischer | Daughter | — | 11 | ~1929 |
| Emanuel Fischer | Head | — | 36 | ~1904 |
| Malvin Fischer | Son | — | 9 | ~1931 |
| Margie Fischer | Daughter | — | 4 | ~1936 |
| Bennie Fischer | Son | — | 3 | ~1937 |
Census Appearances
1930
Hyde, South …
Other, age 24
Hyde, South Dakota · implied b. ~1906 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fischer |
| Given Name | Mary |
| Relationship to Head | wife-H |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | South Dakota |
| Age at First Marriage | 20 |
| Father's Birthplace | Russia |
| Mother's Birthplace | South Dakota |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
1940
Hyde-County, South …
Spouse, age 33
Hyde-County, South Dakota · implied b. ~1907 — 8 household members
| Surname | Fischer |
| Given Name | Mary B |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | South Dakota |
| 1935 Residence (City) | Bramhall township |
| 1935 Residence (County) | Hyde |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | No 8 |
| 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 Mary Fischer across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Fischer
Spouse · 1940 · age 33 · b. ~1907 · 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 — Hyde-County, South Dakota
Open full size
1940 US Federal Census — Hyde-County, South Dakota
Page Contents
37 people indexed on this census page (nara:1940:m-t0627-03858-00411)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Verola Schulz | 18 | Daughter | Servant | South Dakota |
| 2 | Verna Schulz | 17 | Daughter | Servant | South Dakota |
| 3 | Elmer E Schulz | 16 | Son | Farm Labour | South Dakota |
| 4 | Marvin M Schulz | 15 | Son | — | South Dakota |
| 5 | Kenneth Schulz | 9 | Son | — | South Dakota |
| 6 | Robert Schulz | 7 | Son | — | South Dakota |
| 7 | Emanuel B Fischer | 36 | Head | Farmer | South Dakota |
| 8 | Mary B Fischer THIS PERSON | 33 | Wife | — | South Dakota |
| 9 | Leonard M Fischer | 12 | Son | — | South Dakota |
| 10 | Doris R Fischer | 11 | Daughter | — | South Dakota |
| 11 | Marlen B Fischer | 10 | Son | — | South Dakota |
| 12 | Malvin R Fischer | 9 | Son | — | South Dakota |
| 13 | Bennie D Fischer | 3 | Son | — | South Dakota |
| 14 | Margie J Fischer | 4 | Daughter | — | South Dakota |
| 15 | William D Brace | 71 | Head | — | South Dakota |
| 16 | Gertie Brace | 65 | Wife | — | Wisconsin |
| 17 | John Q Fifer | 62 | Head | Farmer | Iowa |
| 18 | Leo J Fifer | 18 | Son | — | South Dakota |
| 19 | Mary Atkinson | 71 | Servant | Servant | Illinois |
| 20 | Albert E Parkinson | 63 | Head | Farmer | Iowa |
| 21 | Nellie A Parkinson | 59 | Wife | — | Iowa |
| 22 | John C Tompkins | 57 | Head | Farmer | Illinois |
| 23 | Leona M Tompkins | 48 | Wife | — | Illinois |
| 24 | Ralph E Q Morgan | 33 | Head | Truck Driver | South Dakota |
| 25 | Maude B Morgan | 32 | Wife | — | South Dakota |
| 26 | Ralph C Morgan | 2 | Son | — | South Dakota |
| 27 | Fredie T Morgan | 2 | Son | — | South Dakota |
| 28 | Robert G Smith | 64 | Lodger | Farm Labour | Iowa |
| 29 | Ed Rath | 29 | Head | Farmer | South Dakota |
| 30 | James A Mcdonald | 33 | Head | Farmer | South Dakota |
| 31 | Shirley E Mcdonald | 33 | Wife | — | South Dakota |
| 32 | Deane A Mcdonald | 10 | Son | — | South Dakota |
| 33 | Beveraly A Mcdonald | 9 | Daughter | — | South Dakota |
| 34 | Eugene F Mcdonald | 6 | Son | — | South Dakota |
| 35 | Leon B St John | 57 | Hired hand | Farm Labour | Wisconsin |
| 36 | Everett A Ellerton | 24 | Lodger | Teacher | South Dakota |
| 37 | Cyrus O Q Mack | 86 | Head | — | 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)