GJ
Grace Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Walworth-County, South Dakota
Our Model Tree links this Grace Johnson across the 1930 and 1940 US Censuses in Walworth-County, South Dakota (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 9-person household.
Age 14
b. ~1926
Female
Daughter
Born: South Dakota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Walworth-County, South Dakota |
| Surname | Johnson |
| Given Name | Grace |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | South Dakota |
| 1935 Residence (City) | Horas Township Range 79 |
| 1935 Residence (County) | Walworth |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
| Township / Ward | Horas Township Range 79 |
| Est. Birth Year | ~1926 |
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 Grace | Age | Birth yr |
|---|---|---|---|---|
| Florence Johnson | Daughter | — | 18 | ~1922 |
| Lucille Johnson | Daughter | — | 23 | ~1917 |
| Gladys Johnson | Daughter | — | 6 | ~1934 |
| Grace Johnson | Daughter | — | 14 | ~1926 |
| John Johnson | Head | — | 55 | ~1885 |
| Martin Johnson | Son | — | 25 | ~1915 |
| George Johnson | Son | — | 21 | ~1919 |
| Frank Johnson | Son | — | 11 | ~1929 |
| Minnie Johnson | Spouse | — | 50 | ~1890 |
Census Appearances
1930
Walworth, South …
Daughter, age 4
Walworth, South Dakota · implied b. ~1926 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Grace |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | South Dakota |
| Father's Birthplace | Iowa |
| Mother's Birthplace | South Dakota |
| Can Read/Write | No |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
1940
Walworth-County, South …
Daughter, age 14
Walworth-County, South Dakota · implied b. ~1926 — 9 household members
| Surname | Johnson |
| Given Name | Grace |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | South Dakota |
| 1935 Residence (City) | Horas Township Range 79 |
| 1935 Residence (County) | Walworth |
| 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 Grace Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Grace Johnson
Daughter · 1940 · age 14 · b. ~1926 · South Dakota
★ You are viewing this record
Sibling
Florence Johnson
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frank Johnson
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Martin Johnson
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lucille Johnson
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Johnson
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gladys Johnson
Sibling · 1940 · age 6
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 — Walworth-County, South Dakota
Open full size
1940 US Federal Census — Walworth-County, South Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03869-00608)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Thomas Scholzen | 61 | Head | Farmer | Iowa |
| 42 | Catherine Scholzen | 62 | Wife | — | Iowa |
| 43 | Maurice Scholzen | 23 | Son | Truck Driver | South Dakota |
| 44 | Thomas J. Scholzen | 19 | Son | — | South Dakota |
| 45 | Joe Vammer | 43 | Head | Farmer | South Dakota |
| 46 | Olive N. Vammer | 43 | Wife | — | Norway |
| 47 | Charles Oster | 39 | Head | Farmer | South Dakota |
| 48 | Katie Oster | 39 | Wife | — | North Dakota |
| 49 | Bernadad Oster | 13 | Daughter | — | South Dakota |
| 50 | Orville Oster | 8 | Son | — | South Dakota |
| 51 | Otto Oster | 5 | Son | — | South Dakota |
| 52 | Joyce Oster | 1 | Daughter | — | South Dakota |
| 53 | Minroy Johnson | 27 | Head | Farmer | South Dakota |
| 54 | Merle Johnson | 27 | Wife | — | South Dakota |
| 55 | Ruth-Ann Johnson | 4 | Daughter | — | South Dakota |
| 56 | Bruce Johnson | 2 | Son | — | South Dakota |
| 57 | Margaret M. Johnson | 0 | Daughter | — | South Dakota |
| 58 | Gottlieb Leidholt | 54 | Head | Farmer | Russia |
| 59 | Katie Leidholt | 48 | Wife | — | South Dakota |
| 60 | Edward Leidholt | 23 | Son | — | South Dakota |
| 61 | Emil Leidholt | 17 | Son | — | South Dakota |
| 62 | Lorraine Leidholt | 15 | Daughter | — | South Dakota |
| 63 | John Leidholt | 12 | Son | — | South Dakota |
| 64 | Frances Leidholt | 8 | Daughter | — | South Dakota |
| 65 | John M. Johnson | 55 | Head | Farmer | Iowa |
| 66 | Minnie Johnson | 50 | Wife | — | South Dakota |
| 67 | Martin Johnson | 25 | Son | Attendent | South Dakota |
| 68 | Lucille Johnson | 23 | Daughter | Maid | South Dakota |
| 69 | George Johnson | 21 | Son | — | South Dakota |
| 70 | Florence Johnson | 18 | Daughter | — | South Dakota |
| 71 | Grace Johnson THIS PERSON | 14 | Daughter | — | South Dakota |
| 72 | Frank Johnson | 11 | Son | — | South Dakota |
| 73 | Gladys Johnson | 6 | Daughter | — | South Dakota |
| 74 | George Paulson | 48 | Head | Farmer | South Dakota |
| 75 | Martha Paulson | 38 | Wife | — | North Dakota |
| 76 | Donald-George Paulson | 8 | Son | — | South Dakota |
| 77 | Lois-Mae Paulson | 4 | Daughter | — | South Dakota |
| 78 | Arthur Paulson | 46 | Brother | Farmer | South Dakota |
| 79 | Lars Karson | 62 | Head | Farmer | Norway |
| 80 | Andrew Karson | 59 | Brother | Farmer | Norway |
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)