RN
Ruth Nelson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Clay-County, South Dakota
Our Model Tree links this Ruth Nelson across the 1920, 1930 and 1940 US Censuses in Clay-County, South Dakota (XGBoost, ~Confirmed), with identified parents Albert & Albert — first a daughter (b.~1919), then head of a 6-person household.
Age 21
b. ~1919
Female
Daughter
Born: South Dakota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Clay-County, South Dakota |
| Surname | Nelson |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | South Dakota |
| 1935 Residence (City) | Garfield Twp. |
| 1935 Residence (County) | Clay |
| Additional Details | |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | GW |
| Hours Worked | 30 |
| Income (1939) | 286 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
| Occupation | Teacher |
| Township / Ward | Garfield Twp |
| Est. Birth Year | ~1919 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ruth | Age | Birth yr |
|---|---|---|---|---|
| Ruth Nelson | Daughter | — | 21 | ~1919 |
| Alda Nelson | Daughter | — | 14 | ~1926 |
| Albert Nelson | Head | — | 57 | ~1883 |
| Bernard Nelson | Son | — | 17 | ~1923 |
| Raymond Nelson | Son | — | 19 | ~1921 |
| Cornelia Nelson | Spouse | — | 52 | ~1888 |
Census Appearances
1920
Clay, South …
Daughter, age 1
Clay, South Dakota · implied b. ~1919 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Ruth A |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | South Dakota |
| Father's Birthplace | South Dakota |
| Mother's Birthplace | South Dakota |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
1930
Clay, South …
Daughter, age 11
Clay, South Dakota · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | South Dakota |
| Father's Birthplace | South Dakota |
| Mother's Birthplace | South Dakota |
| Occupation | none |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
1940
Clay-County, South …
Daughter, age 21
Clay-County, South Dakota · implied b. ~1919 — 6 household members
| Surname | Nelson |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | South Dakota |
| 1935 Residence (City) | Garfield Twp. |
| 1935 Residence (County) | Clay |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | GW |
| Hours Worked | 30 |
| Income (1939) | 286 |
| Highest Grade | H 4 |
| 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 Ruth Nelson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Albert Nelson (~0.92 confidence) and father Albert Nelson (~0.92 confidence) and mother Amanda Nelson (~0.92 confidence) and mother Emelia Nelson (~0.92 confidence) and mother Cornelia Nelson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Albert Nelson
b. ~1883
Source father
● Household
· direct · ~0.92
Father
Albert Nelson
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Amanda Nelson
b. ~1888
Source mother
● Household
· direct · ~0.92
Mother
Emelia Nelson
b. ~1888
Source mother
● Household
· direct · ~0.92
Mother
Cornelia Nelson
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ruth Nelson
Daughter · 1940 · age 21 · b. ~1919 · South Dakota
★ You are viewing this record
Sibling
Bernard Nelson
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Nelson
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alda Nelson
Sibling · 1940 · age 14
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 — Clay-County, South Dakota
Open full size
1940 US Federal Census — Clay-County, South Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03851-00790)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John M. Erickson | 57 | Head | Farmer | South Dakota |
| 2 | Emma Erickson | 50 | Wife | — | South Dakota |
| 3 | Virginia Erickson | 23 | Daughter | — | South Dakota |
| 4 | Maurice Erickson | 20 | Son | — | South Dakota |
| 5 | Stanley Erickson | 18 | Son | — | South Dakota |
| 6 | Esther Erickson | 14 | Daughter | — | South Dakota |
| 7 | Sheridan Erickson | 12 | Son | — | South Dakota |
| 8 | Charles Danielson | 62 | Head | Farmer | South Dakota |
| 9 | Jessie Danielson | 64 | Wife | — | South Dakota |
| 10 | Milton Danielson | 33 | Son | Farmer | South Dakota |
| 11 | Myrtle Danielson | 30 | Daughter-in-law | — | South Dakota |
| 12 | Yvonne Danielson | 1 | Daughter | — | South Dakota |
| 13 | Lyda Osthus | 26 | Lodger | Teacher | South Dakota |
| 14 | Albert Nelson | 57 | Head | Farmer | South Dakota |
| 15 | Cornelia Nelson | 52 | Wife | — | South Dakota |
| 16 | Ruth Nelson THIS PERSON | 21 | Daughter | Teacher | South Dakota |
| 17 | Raymond Nelson | 19 | Son | Farm Laborer | South Dakota |
| 18 | Bernard Nelson | 17 | Son | Farm Laborer | South Dakota |
| 19 | Alda Nelson | 14 | Daughter | — | South Dakota |
| 20 | Arthur Yeiter | 52 | Head | Farmer | Minnesota |
| 21 | Minni Yeiter | 54 | Wife | — | Iowa |
| 22 | Oscar Williamson | 59 | Head | Farmer | Sweden |
| 23 | Alfreda Williamson | 60 | Wife | — | South Dakota |
| 24 | Olaf Lind | 91 | Head | — | Sweden |
| 25 | Helena Lind | 80 | Wife | — | Sweden |
| 26 | Euphemia Lind | 56 | Daughter | — | Iowa |
| 27 | Jennings Newbold | 42 | Head | Farmer | Indiana |
| 28 | French Newbold | 23 | Wife | — | Iowa |
| 29 | Dorothy Newbold | 11 | Daughter | — | South Dakota |
| 30 | Ardis Newbold | 11 | Daughter | — | South Dakota |
| 31 | James Newbold | 6 | Son | — | South Dakota |
| 32 | Le Roy Newbold | 2 | Son | — | South Dakota |
| 33 | Ernest Lind | 52 | Head | Farmer | South Dakota |
| 34 | Florence Lind | 41 | Wife | — | South Dakota |
| 35 | Howard Lind | 15 | Son | Farm Laborer | South Dakota |
| 36 | Avie Lind | 14 | Daughter | — | South Dakota |
| 37 | Jeanette Lind | 12 | Daughter | — | South Dakota |
| 38 | Richard Lind | 8 | Son | — | South Dakota |
| 39 | Irvin Eklund | 37 | Head | Farmer | South Dakota |
| 40 | Florence Eklund | 27 | Wife | — | South Dakota |
Pedigree Summary
Ruth + 3 siblings
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
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)