ON
Oscar Nelson — 1940 US Census Record
Model Tree available1940 United States Federal Census · St.-Louis-County, Minnesota
Our Model Tree links this Oscar Nelson across the 1920, 1930 and 1940 US Censuses in St.-Louis-County, Minnesota (XGBoost, ~Confirmed), with identified parents Ginnia & Ettie — first a head (b.~1897), then head of a 6-person household.
Age 43
b. ~1897
Male
Head
Born: Minnesota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Louis-County, Minnesota |
| Surname | Nelson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | Virginia city |
| 1935 Residence (County) | St. Louis |
| Additional Details | |
| Hours Worked | 10 |
| Highest Grade | H-1 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Township / Ward | Virginia City |
| Est. Birth Year | ~1897 |
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 Oscar | Age | Birth yr |
|---|---|---|---|---|
| Annabell Nelson | Daughter | — | 13 | ~1927 |
| Dorothy Nelson | Daughter | — | 10 | ~1930 |
| Nancy Nelson | Daughter | — | 6 | ~1934 |
| Oscar Nelson | Head | — | 43 | ~1897 |
| Frederick Nelson | Son | — | 18 | ~1922 |
| Hilma Nelson | Spouse | — | 36 | ~1904 |
Census Appearances
1920
St Louis, …
Son, age 23
St Louis, Minnesota · implied b. ~1897 — 7 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 | Minnesota |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Draftsman |
| Industry | Steel Plant |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1930
St Louis, …
Head, age 33
St Louis, Minnesota · implied b. ~1897 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Minnesota |
| Age at First Marriage | 24 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Norway |
| Occupation | Laborer |
| Industry | Lumber |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 15.00 |
| Radio Set | R |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
St.-Louis-County, Minnesota
Head, age 43
St.-Louis-County, Minnesota · implied b. ~1897 — 6 household members
| Surname | Nelson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | Virginia city |
| 1935 Residence (County) | St. Louis |
| Hours Worked | 10 |
| Highest Grade | H-1 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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 Ginnia Roland (~0.60 confidence) and mother Ettie Roland (~0.60 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.6
Mother
Ginnia Roland
b. ~1885
Source mother
● Household
· direct · ~0.6
Mother
Ettie Roland
b. ~1893
Source mother
● Household
· direct · ~0.6
This person
Anchor record
Oscar Nelson
Head · 1940 · age 43 · b. ~1897 · Minnesota
★ 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 — St.-Louis-County, Minnesota
Open full size
1940 US Federal Census — St.-Louis-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01957-00701)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Steve G. Vester | 54 | Head | Gas Plant Engr. | Michigan |
| 2 | Bertha M. Vester | 52 | Wife | — | Michigan |
| 3 | Pauline Vester | 25 | Daughter | Sales Clerk | Michigan |
| 4 | Robert C. Vester | 24 | Son | Laborer | South Dakota |
| 5 | Edwin H. G. Robinson | 45 | Head | Fireman | Michigan |
| 6 | Florence A. Robinson | 45 | Wife | — | Norway |
| 7 | Russell E. Robinson | 23 | Son | — | Minnesota |
| 8 | Grace L. Robinson | 19 | Daughter | New Worker | Minnesota |
| 9 | Donald Robinson | 14 | Son | — | Minnesota |
| 10 | Lucille A. Robinson | 12 | Daughter | — | Minnesota |
| 11 | William Bjorlin | 47 | Head | Conductor | Minnesota |
| 12 | Alice H. G. Bjorlin | 35 | Wife | — | Iowa |
| 13 | Ronald D. Bjorlin | 18 | Son | Laborer | Minnesota |
| 14 | Beryl L. Bjorlin | 16 | Daughter | — | Minnesota |
| 15 | Patricia G. Bjorlin | 10 | Daughter | — | Minnesota |
| 16 | William R. Bjorlin | 8 | Son | — | Minnesota |
| 17 | Richard B. Bjorlin | 2 | Son | — | Minnesota |
| 18 | May L. Smith | 28 | Head | Secretary | Minnesota |
| 19 | Charles H. Smith | 23 | Brother | Warehouseman | Minnesota |
| 20 | William J. Smith | 18 | Brother | Laborer | Minnesota |
| 21 | Betty J. Smith | 12 | Sister | — | Minnesota |
| 22 | Barbara J. Smith | 10 | Sister | — | Minnesota |
| 23 | Hugh G. Kieffer | 45 | Head | Ticket Clerk | Minnesota |
| 24 | Lucy H. Kieffer | 40 | Wife | — | Minnesota |
| 25 | Hugh G. Kieffer | 15 | Son | — | Minnesota |
| 26 | George D. Kieffer | 14 | Son | — | Minnesota |
| 27 | Lucy L. Kieffer | 6 | Daughter | — | Minnesota |
| 28 | Harry Worden | 53 | Head | Laborer | Michigan |
| 29 | Inez C. Worden | 37 | Wife | — | Michigan |
| 30 | Elaine L. Worden | 17 | Daughter | — | Minnesota |
| 31 | Robert L. Worden | 16 | Son | — | Minnesota |
| 32 | Oscar Nelson THIS PERSON | 43 | Head | — | Minnesota |
| 33 | Hilma E. Nelson | 36 | Wife | — | Wisconsin |
| 34 | Frederick Nelson | 18 | Son | — | Minnesota |
| 35 | Annabell J. Nelson | 13 | Daughter | — | Minnesota |
| 36 | Dorothy R. Nelson | 10 | Daughter | — | Minnesota |
| 37 | Nancy D. Nelson | 6 | Daughter | — | Minnesota |
| 38 | Arthur Taipale | 56 | Head | Janitor | Finland |
| 39 | Hilma Taipale | 51 | Wife | — | Finland |
| 40 | Reinhold Johnson | 43 | Head | Flagman | Minnesota |
Pedigree Summary
Oscar
Gen 1 · 2 parents
~0.6
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)