JG
John Gross — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Ziebach-County, South Dakota
Our Model Tree links this John Gross across the 1930 and 1940 US Censuses in Ziebach-County, South Dakota (XGBoost, ~Confirmed) — first a head (b.~1898), then head of a 10-person household.
Age 42
b. ~1898
Male
Head
Born: Russia
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Ziebach-County, South Dakota |
| Surname | Gross |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Russia |
| 1935 Residence (City) | T 12 R 21 |
| 1935 Residence (County) | Ziebach |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 56 |
| Income (1939) | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth Country | Russia |
| Birthplace (normalized) | russia |
| Occupation | Farmer |
| Township / Ward | T 12 R 21 |
| Est. Birth Year | ~1898 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Herbert Gross | Son | — | 13 | ~1927 |
| Edwin Gross | Son | — | 19 | ~1921 |
| Edna Gross | Daughter | — | 1 | ~1939 |
| Clarence Gross | Son | — | 9 | ~1931 |
| Violet Gross | Daughter | — | 7 | ~1933 |
| John Gross | Head | — | 42 | ~1898 |
| Rose Gross | Spouse | — | 42 | ~1898 |
| Harold Gross | Son | — | 16 | ~1924 |
| Irene Gross | Daughter | — | 15 | ~1925 |
| Edward Gross | Son | — | 10 | ~1930 |
Census Appearances
1930
Ziebach, South …
Head, age 33
Ziebach, South Dakota · implied b. ~1897 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gross |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Russia |
| Naturalization Status | Naturalized |
| Year of Immigration | 1901 |
| Age at First Marriage | 21 |
| Father's Birthplace | Russia |
| Mother's Birthplace | Russia |
| Occupation | Farmer |
| Industry | General farm |
| Class of Worker | VVVV |
| Can Read/Write | Yes |
| Mother Tongue | German |
| Home Owned/Rented | O |
| Home Value / Rent | 6000 |
| Birth Country | Russia |
| Birthplace (normalized) | russia |
1940
Ziebach-County, South …
Head, age 42
Ziebach-County, South Dakota · implied b. ~1898 — 10 household members
| Surname | Gross |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Russia |
| 1935 Residence (City) | T 12 R 21 |
| 1935 Residence (County) | Ziebach |
| Naturalization Status | Naturalized |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 56 |
| Income (1939) | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| 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 John Gross across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Gross
Head · 1940 · age 42 · b. ~1898 · 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 — Ziebach-County, South Dakota
Open full size
1940 US Federal Census — Ziebach-County, South Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03870-00641)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John M Volk | 48 | Head | Farmer | Russia |
| 42 | Barbara Volk | 55 | Wife | — | Russia |
| 43 | Isadore Volk | 13 | Nephew | — | Canada |
| 44 | Eugene Smock | 58 | Head | Farmer | Kentucky |
| 45 | Lena D. Smock | 52 | Wife | — | Ohio |
| 46 | Clarence H. Smock | 22 | Son | Kitchen Help | South Dakota |
| 47 | Esther M. Smock | 16 | Daughter | — | South Dakota |
| 48 | Ivan G. Phillips | 35 | Boarder | Teacher | Nebraska |
| 49 | Fred F Sprenger | 64 | Head | Farmer | Russia |
| 50 | Dorothy Sprenger | 65 | Wife | — | South Dakota |
| 51 | Lydia Sprenger | 22 | Daughter | Seamstress | North Dakota |
| 52 | Edwin Sprenger | 21 | Son | Laborer | North Dakota |
| 53 | Hattie I. Marple | 57 | Head | — | Nebraska |
| 54 | A. Walter Marple | 29 | Son | Farmer | South Dakota |
| 55 | George B. Marple | 26 | Son | — | South Dakota |
| 56 | Frank B. Marple | 24 | Son | Farmer | South Dakota |
| 57 | Sam R. Marple | 22 | Son | — | South Dakota |
| 58 | Robert H. Marple | 19 | Son | Farmer | South Dakota |
| 59 | Ralph Marple | 17 | Son | Farmer | South Dakota |
| 60 | Irene Marple | 12 | Daughter | — | South Dakota |
| 61 | John Kapp | 54 | Head | Farmer | Russia |
| 62 | Minna Kapp | 54 | Wife | — | South Dakota |
| 63 | Ray J. Kapp | 25 | Son | Roadwork | South Dakota |
| 64 | Lavene Kapp | 21 | Daughter | Beauty Operator | South Dakota |
| 65 | Doreen Kapp | 13 | Daughter | — | South Dakota |
| 66 | Clifton R. Birkeland | 28 | Head | Farmer | South Dakota |
| 67 | Inga H. Birkeland | 27 | Wife | — | South Dakota |
| 68 | Fern E. Birkeland | 4 | Daughter | — | South Dakota |
| 69 | Russell O. Birkeland | 0 | Son | — | South Dakota |
| 70 | John Gross THIS PERSON | 42 | Head | Farmer | Russia |
| 71 | Rose Gross | 42 | Wife | — | North Dakota |
| 72 | Edwin R. Gross | 19 | Son | Laborer | North Dakota |
| 73 | Harold M. Gross | 16 | Son | — | North Dakota |
| 74 | Irene E. Gross | 15 | Daughter | — | North Dakota |
| 75 | Herbert O. Gross | 13 | Son | — | North Dakota |
| 76 | Edward A. Gross | 10 | Son | — | North Dakota |
| 77 | Clarence Gross | 9 | Son | — | South Dakota |
| 78 | Violet L. Gross | 7 | Daughter | — | South Dakota |
| 79 | Edna R. Gross | 1 | Daughter | — | South Dakota |
| 80 | Alvin A. Guffick | 26 | Head | Farmer | 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)