ON
Oscar Nelson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Wright-County, Iowa
Our Model Tree links this Oscar Nelson across the 1920, 1930 and 1940 US Censuses in Wright-County, Iowa (XGBoost, ~Confirmed), with identified parents Carrie & Ole — first a head (b.~1889), then head of a 9-person household.
Age 51
b. ~1889
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Wright-County, Iowa |
| Surname | Nelson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Pleasant Twp |
| 1935 Residence (County) | Wright |
| Additional Details | |
| Occupation | farming |
| Industry | farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farming |
| Township / Ward | Pleasant Twp |
| Est. Birth Year | ~1889 |
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 Oscar | Age | Birth yr |
|---|---|---|---|---|
| Marilyn Nelson | Daughter | — | ~1940 | |
| Genevieve Nelson | Daughter | — | 10 | ~1930 |
| Shirley Nelson | Daughter | — | 7 | ~1933 |
| Oscar Nelson | Head | — | 51 | ~1889 |
| Ole Nelson | Other | — | 88 | ~1852 |
| Johnie Shaw | Other | — | 46 | ~1894 |
| Robert Nelson | Son | — | 14 | ~1926 |
| Eugene Nelson | Son | — | 12 | ~1928 |
| Carrie Nelson | Spouse | — | 34 | ~1906 |
Census Appearances
1920
Wright, Iowa
Son, age 33
Wright, Iowa · implied b. ~1887 — 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 | 33 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Norway |
| Occupation | Tiler |
| Industry | Drains |
| Class of Worker | Em |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Wright, Iowa
Head, age 42
Wright, Iowa · implied b. ~1888 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Oscar N. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 40 |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Norway |
| Occupation | Lineman (Electric) |
| Industry | Traveling |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 2000 |
| Radio Set | R |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Wright-County, Iowa
Head, age 51
Wright-County, Iowa · implied b. ~1889 — 9 household members
| Surname | Nelson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Pleasant Twp |
| 1935 Residence (County) | Wright |
| Occupation | farming |
| Industry | farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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: mother Carrie Nelson (~0.92 confidence) and father Ole Nelson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Carrie Nelson
b. ~1852
Source mother
● Household
· direct · ~0.92
Father
Ole Nelson
b. ~1854
Source father
● Household
· direct · ~0.92
This person
Anchor record
Oscar Nelson
Head · 1940 · age 51 · b. ~1889 · Iowa
★ 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 — Wright-County, Iowa
Open full size
1940 US Federal Census — Wright-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01217-00887)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James T. Barry | 40 | Head | Farming | Iowa |
| 2 | Veronica Barry | 31 | Wife | — | Iowa |
| 3 | Robert Barry | 3 | Son | — | Iowa |
| 4 | Charles Gill | 50 | Hired man | Farm Laborer | Michigan |
| 5 | Robert F. Dawson | 22 | Head | Farming | Iowa |
| 6 | Wilma Dawson | 24 | Wife | — | Minnesota |
| 7 | Robert D. Dawson | 0 | Son | — | Iowa |
| 8 | Oscar Nelson THIS PERSON | 51 | Head | Farming | Iowa |
| 9 | Carrie Nelson | 34 | Wife | — | South Dakota |
| 10 | Robert Nelson | 14 | Son | — | Iowa |
| 11 | Eugene Nelson | 12 | Son | — | Iowa |
| 12 | Genevieve Nelson | 10 | Daughter | — | Iowa |
| 13 | Shirley Nelson | 7 | Daughter | — | Iowa |
| 14 | Marilyn Nelson | 0 | Daughter | — | Iowa |
| 15 | Johnie Shaw | 46 | Brother-in-law | — | Iowa |
| 16 | Ole Nelson | 88 | Father | — | Wisconsin |
| 17 | Sam H. Frohning | 37 | Head | Farming | Iowa |
| 18 | Beatrice Frohning | 34 | Wife | — | Iowa |
| 19 | Oliver Frohning | 4 | Son | — | Iowa |
| 20 | Betty Jo Frohning | 2 | Daughter | — | Iowa |
| 21 | Fred L. Christie | 43 | Head | Farming | Iowa |
| 22 | Emma Christie | 44 | Wife | — | Illinois |
| 23 | Lola Christie | 21 | Daughter | — | Iowa |
| 24 | Le Roy Christie | 20 | Son | — | Iowa |
| 25 | Eugene Carter | 2 | Grand son | — | Iowa |
| 26 | Lloyd Kelling | 28 | Head | Farming | Iowa |
| 27 | Alma Kelling | 22 | Wife | — | Iowa |
| 28 | Earl Jenison | 44 | Head | Farming | Iowa |
| 29 | Hazel Jenison | 44 | Wife | — | Illinois |
| 30 | George Jenison | 23 | Son | Farming | Iowa |
| 31 | Leland Jenison | 20 | Son | Farming | Iowa |
| 32 | Ardeth Jenison | 11 | Daughter | — | Iowa |
| 33 | Arnold Jenison | 11 | Son | — | Iowa |
| 34 | Robert Jenison | 8 | Son | — | Iowa |
| 35 | Elna Jenison | 1 | Daughter | — | Iowa |
| 36 | Irving Melhus | 30 | Head | Farming | Iowa |
| 37 | Jeanette Melhus | 29 | Wife | — | Iowa |
| 38 | Elmer Sturgeon | 51 | Head | Farming | Illinois |
| 39 | Zonja Sturgeon | 55 | Wife | — | Iowa |
| 40 | Dale Sturgeon | 30 | Son | Farming | Iowa |
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)