RN
Robert Nelson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Lake-County, Illinois
Our Model Tree links this Robert Nelson across the 1920, 1930 and 1940 US Censuses in Lake-County, Illinois (XGBoost, ~Confirmed), with identified parents Hilda & Levi — first a head (b.~1909), then head of a 3-person household.
Age 31
b. ~1909
Male
Head
Born: Wisconsin
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Lake-County, Illinois |
| Surname | Nelson |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Waukegan city |
| 1935 Residence (County) | Lake |
| Additional Details | |
| Occupation | Catcher |
| Industry | steel mill |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 1800 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same house |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Occupation | Catcher |
| Township / Ward | Waukegan City |
| Est. Birth Year | ~1909 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Robert Nelson | Head | — | 31 | ~1909 |
| Ronald Nelson | Son | — | 3 | ~1937 |
| Anne Nelson | Spouse | — | 28 | ~1912 |
Census Appearances
1920
Lake, Illinois
Son, age 11
Lake, Illinois · implied b. ~1909 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Wyoming |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1930
Lake, Illinois
Son, age 21
Lake, Illinois · implied b. ~1909 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Wyoming |
| Occupation | Millwright |
| Industry | Steel Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Lake-County, Illinois
Head, age 31
Lake-County, Illinois · implied b. ~1909 — 3 household members
| Surname | Nelson |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Waukegan city |
| 1935 Residence (County) | Lake |
| Occupation | Catcher |
| Industry | steel mill |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 1800 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same house |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
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 Robert Nelson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Hilda Nelson (~0.92 confidence) and father Levi Nelson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Hilda Nelson
b. ~1883
Source mother
● Household
· direct · ~0.92
Father
Levi Nelson
b. ~1886
Source father
● Household
· direct · ~0.92
This person
Anchor record
Robert Nelson
Head · 1940 · age 31 · b. ~1909 · Illinois
★ 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 — Lake-County, Illinois
Open full size
1940 US Federal Census — Lake-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00830-00560)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Lampinen | 58 | Head | Bundler | Finland |
| 2 | Anna Lampinen | 48 | Wife | — | Finland |
| 3 | Arne Lampinen | 26 | Son | Shipper | Illinois |
| 4 | Taimi Lampinen | 25 | Daughter | Gown Finisher | Illinois |
| 5 | Hilda Lampinen | 23 | Daughter | Housemaid | Illinois |
| 6 | Walter Lampinen | 13 | Son | — | Illinois |
| 7 | Frank Podjed | 55 | Head | Laborer | Jugo Slavia |
| 8 | Anna Podjed | 55 | Wife | — | Jugo Slavia |
| 9 | Frank Podjed | 21 | Son | — | Illinois |
| 10 | Petronella Pazereckis | 55 | Head | Machine Operator | Lithuania |
| 11 | John Varma | 53 | Head | Carpenter | Finland |
| 12 | Jennie Varma | 45 | Wife | — | Michigan |
| 13 | Viola Varma | 24 | Daughter | Stenographer | Minnesota |
| 14 | Michael Johnson | 54 | Lodger | Cement Finisher | Estonia |
| 15 | Gustaf Swanson | 60 | Head | — | Sweden |
| 16 | Ture Swanson | 29 | Son | Laborer | Illinois |
| 17 | Leonard Swanson | 18 | Son | New Worker | Illinois |
| 18 | Martin Hojmark | 46 | Lodger | Laborer | Denmark |
| 19 | Fred Ponzio | 38 | Head | Laborer | Italy |
| 20 | Jean Ponzio | 34 | Wife | — | Illinois |
| 21 | Frederick Ponzio | 4 | Son | — | Illinois |
| 22 | James Ponzio | 1 | Son | — | Illinois |
| 23 | John Novak | 51 | Head | Wire Drawer | Jugo Slavia |
| 24 | Jennie Novak | 55 | Wife | — | Jugo Slavia |
| 25 | Erick Erickson | 44 | Head | Pattern Maker | Sweden |
| 26 | Eda E. Erickson | 37 | Wife | — | Norway |
| 27 | John Erickson | 41 | Brother | Pattern Maker | Sweden |
| 28 | Arvo Toivonen | 41 | Head | Plasterer | Finland |
| 29 | Tyyne Toivonen | 33 | Wife | — | Finland |
| 30 | Arnold Toivonen | 10 | Son | — | Illinois |
| 31 | Gustave Vanka | 48 | Head | Wire Temperer | Finland |
| 32 | Hilda Vanka | 48 | Wife | Laundress | Finland |
| 33 | Bertha Vanka | 31 | Daughter | Bookkeeper | Minnesota |
| 34 | John Lindquist | 35 | Head | Welder | Massachusetts |
| 35 | Helen Lindquist | 34 | Wife | — | Finland |
| 36 | Lillian Lindquist | 11 | Daughter | — | Illinois |
| 37 | Nancy Lindquist | 2 | Daughter | — | Illinois |
| 38 | Robert Nelson THIS PERSON | 31 | Head | Catcher | Wisconsin |
| 39 | Anne Nelson | 28 | Wife | — | Illinois |
| 40 | Ronald Nelson | 3 | Son | — | Illinois |
Pedigree Summary
Robert
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)