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Mary Mayer — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Bon-Homme-County, South Dakota
Our Model Tree links this Mary Mayer across the 1930 and 1940 US Censuses in Bon-Homme-County, South Dakota (XGBoost, ~Confirmed) — first a spouse (b.~1894), then head of a 9-person household.
Age 46
b. ~1894
Female
Spouse
Born: Russia
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Bon-Homme-County, South Dakota |
| Surname | Mayer |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Russia |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Bon Homme |
| Naturalization Status | Naturalized |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | 0 |
| 1935 Residence | South Dakota |
| Birth Country | Russia |
| Birthplace (normalized) | russia |
| Township / Ward | Monroe Township |
| Est. Birth Year | ~1894 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Maxine Mayer | Daughter | — | 4 | ~1936 |
| Hattie Mayer | Daughter | — | 15 | ~1925 |
| Bernice Mayer | Daughter | — | 6 | ~1934 |
| Violet Mayer | Daughter | — | 11 | ~1929 |
| Fred Mayer | Head | — | 54 | ~1886 |
| Melvin Mayer | Son | — | 7 | ~1933 |
| Edwin Mayer | Son | — | 14 | ~1926 |
| Lester Mayer | Son | — | 9 | ~1931 |
| Mary Mayer | Spouse | — | 46 | ~1894 |
Census Appearances
1930
Bon Homme, …
Spouse, age 36
Bon Homme, South Dakota · implied b. ~1894 — 13 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mayer |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Russia |
| Naturalization Status | Alien |
| Year of Immigration | 1911 |
| Age at First Marriage | 19 |
| Father's Birthplace | Russia |
| Mother's Birthplace | Russia |
| Occupation | none |
| Can Read/Write | No |
| Mother Tongue | German |
| Birth Country | Russia |
| Birthplace (normalized) | russia |
1940
Bon-Homme-County, South …
Spouse, age 46
Bon-Homme-County, South Dakota · implied b. ~1894 — 9 household members
| Surname | Mayer |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Russia |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Bon Homme |
| Naturalization Status | Naturalized |
| Income (1939) | 0 |
| Highest Grade | 0 |
| 1935 Residence | South Dakota |
| Birth Country | Russia |
| Birthplace (normalized) | russia |
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 Mayer across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mayer
Spouse · 1940 · age 46 · b. ~1894 · 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 — Bon-Homme-County, South Dakota
Open full size
1940 US Federal Census — Bon-Homme-County, South Dakota
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-03848-00161)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charles Bartunek | 35 | Head | Farmer | South Dakota |
| 2 | Lillian Bartunek | 29 | Wife | — | South Dakota |
| 3 | Oscar Bartunek | 11 | Son | — | South Dakota |
| 4 | Alfred Bartunek | 6 | Son | — | South Dakota |
| 5 | Frank Bartunek | 76 | Head | Farmer | Bohemia |
| 6 | Anna Bartunek | 68 | Wife | — | Ohio |
| 7 | Clara Bartunek | 44 | Daughter | — | South Dakota |
| 8 | John Bartunek | 30 | Son | Farmer | South Dakota |
| 9 | Peter Bartunek | 25 | Son | Farmer | South Dakota |
| 10 | Fred Bartunek | 31 | Head | Farmer | South Dakota |
| 11 | Della Bartunek | 22 | Wife | — | Nebraska |
| 12 | Lawrence Bartunek | 6 | Son | — | South Dakota |
| 13 | Stephen Bartunek | 5 | Son | — | South Dakota |
| 14 | Serapiona Bartunek | 3 | Daughter | — | South Dakota |
| 15 | Fred F Mayer | 54 | Head | Farmer | Russia |
| 16 | Mary Mayer THIS PERSON | 46 | Wife | — | Russia |
| 17 | Hattie Mayer | 15 | Daughter | Helper | South Dakota |
| 18 | Edwin Mayer | 14 | Son | — | South Dakota |
| 19 | Violet Mayer | 11 | Daughter | — | South Dakota |
| 20 | Lester Mayer | 9 | Son | — | South Dakota |
| 21 | Melvin Mayer | 7 | Son | — | South Dakota |
| 22 | Bernice Mayer | 6 | Daughter | — | South Dakota |
| 23 | Maxine Mayer | 4 | Daughter | — | South Dakota |
| 24 | Katie Bartunek | 63 | Head | — | South Dakota |
| 25 | James Bartunek | 40 | Son | Farmer | South Dakota |
| 26 | Hattie Bartunek | 27 | Daughter | — | South Dakota |
| 27 | Frank Jr. Konfrst | 1 | Grandson | — | South Dakota |
| 28 | Paul F. Becvar | 46 | Head | Farmer | South Dakota |
| 29 | Pauline Becvar | 42 | Wife | — | South Dakota |
| 30 | Edward Becvar | 19 | Son | Farm Labor | South Dakota |
| 31 | Dorothy Becvar | 17 | Daughter | — | South Dakota |
| 32 | Violet Becvar | 15 | Daughter | — | South Dakota |
| 33 | Steven Becvar | 12 | Son | — | South Dakota |
| 34 | Oscar Becvar | 9 | Son | — | South Dakota |
| 35 | James Sankey | 35 | Head | Farmer | South Dakota |
| 36 | Lillian Sankey | 25 | Wife | — | Montana |
| 37 | Leo Sankey | 12 | Son | — | South Dakota |
| 38 | Mike Sankey | 66 | Father | Farm Labor | Iowa |
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)