ON
Oscar Nelson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Marshall-County, Kansas
Our Model Tree links this Oscar Nelson across the 1920, 1930 and 1940 US Censuses in Marshall-County, Kansas (XGBoost, ~Confirmed), with identified parents Nels & Ephrime — first a head (b.~1894), then head of a 7-person household.
Age 46
b. ~1894
Male
Head
Born: Kansas
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Marshall-County, Kansas |
| Surname | Nelson |
| Given Name | Oscar E |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Kansas |
| 1935 Residence (City) | Rock Twp |
| 1935 Residence (County) | Marshall |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same house |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
| Occupation | Farmer |
| Township / Ward | Rock Twp |
| 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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Oscar | Age | Birth yr |
|---|---|---|---|---|
| Roseland Nelson | Daughter | — | 6 | ~1934 |
| Twila Nelson | Daughter | — | 8 | ~1932 |
| Carol Nelson | Daughter | — | 1 | ~1939 |
| Darlene Nelson | Daughter | — | 12 | ~1928 |
| Joan Nelson | Daughter | — | 11 | ~1929 |
| Oscar Nelson | Head | — | 46 | ~1894 |
| Anna Nelson | Spouse | — | 38 | ~1902 |
Census Appearances
1920
Marshall, Kansas
Son, age 23
Marshall, Kansas · implied b. ~1897 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Oscar |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Farmer |
| Industry | General farm |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1930
Marshall, Kansas
Son, age 31
Marshall, Kansas · implied b. ~1899 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Oscar |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1940
Marshall-County, Kansas
Head, age 46
Marshall-County, Kansas · implied b. ~1894 — 7 household members
| Surname | Nelson |
| Given Name | Oscar E |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Kansas |
| 1935 Residence (City) | Rock Twp |
| 1935 Residence (County) | Marshall |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same house |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
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 Oscar Nelson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Nels Nelson (~0.92 confidence) and father Ephrime Nelson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Nels Nelson
b. ~1863
Source father
● Household
· direct · ~0.92
Father
Ephrime Nelson
b. ~1870
Source father
● Household
· direct · ~0.92
This person
Anchor record
Oscar Nelson
Head · 1940 · age 46 · b. ~1894 · Kansas
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Marshall-County, Kansas
Open full size
1940 US Federal Census — Marshall-County, Kansas
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01245-00537)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lola M Johnson | 42 | Wife | Housewife | Kansas |
| 2 | Elaine E Johnson | 14 | Daughter | House Work | Kansas |
| 3 | Harlan D Johnson | 9 | Son | — | Kansas |
| 4 | Joyce E Johnson | 1 | Daughter | — | Kansas |
| 5 | Abel Ed Johnson | 76 | Father | — | Sweden |
| 6 | Morris R Sowell|Sowill | 38 | Head | Farmer | Kansas |
| 7 | Hattie J Sowell|Sowill | 36 | Wife | Housewife | Kansas |
| 8 | George L Sowell|Sowill | 16 | Son | — | Kansas |
| 9 | Rollin E Sowell|Sowill | 14 | Son | — | Kansas |
| 10 | Freda Johnson | 66 | Head | House Keeper | Sweden |
| 11 | Omar E Johns | 55 | Head | Farmer | Kansas |
| 12 | Martin S Johnson | 22 | Head | Farmer | Kansas |
| 13 | Ed Roredahl | 58 | Head | Farmer | Illinois |
| 14 | Ida Roredahl | 58 | Wife | Housewife | Kansas |
| 15 | Edwin S Johnson | 25 | Head | Farmer | Sweden |
| 16 | Mary Johnson | 65 | Wife | Housewife | Sweden |
| 17 | Victor Johnson | 21 | Son | Helping On | Kansas |
| 18 | Carl G Swanson | 50 | Head | Farmer | Kansas |
| 19 | Edith Swanson | 24 | Wife | Housewife | Kansas |
| 20 | Eulalia Swanson | 12 | Daughter | — | Kansas |
| 21 | Isabelle Swanson | 10 | Daughter | — | Kansas |
| 22 | Everett Swanson | 8 | Son | — | Kansas |
| 23 | Oscar E Nelson THIS PERSON | 46 | Head | Farmer | Kansas |
| 24 | Anna Nelson | 38 | Wife | Housewife | Kansas |
| 25 | Darlene Nelson | 12 | Daughter | — | Kansas |
| 26 | Joan Nelson | 11 | Daughter | — | Kansas |
| 27 | Twila Nelson | 8 | Daughter | — | Kansas |
| 28 | Roseland Nelson | 6 | Daughter | — | Kansas |
| 29 | Carol Nelson | 1 | Daughter | — | Kansas |
| 30 | John O D Alquist | 69 | Head | Farmer | Sweden |
| 31 | Tillia Alquist | 52 | Wife | Housewife | Missouri |
| 32 | Arthur Alquist | 22 | Son | Helping On | Kansas |
| 33 | Affie Alquist | 22 | Daughter in law | Housewife | Kansas |
| 34 | Lavonza Alquist | 6 | Grand daughter | — | Kansas |
| 35 | Carl Q Larson | 42 | Head | Farmer | Kansas |
| 36 | May Larson | 37 | Wife | House Wife | Kansas |
| 37 | Florence Marie Larson | 7 | Daughter | — | Kansas |
| 38 | Muns Polson | 78 | Head | Farmer | Sweden |
| 39 | Oscar W Polson | 41 | Son | Helping On | Kansas |
| 40 | Albert Head Brouhard | 62 | Head | Farmer | Kansas |
Pedigree Summary
Oscar
Gen 1 · 2 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)