RN
Ralph Nelson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Ralph Nelson across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Albiny — first a head (b.~1907), then head of a 3-person household.
Age 33
b. ~1907
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Nelson |
| Given Name | Ralph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Draftsman |
| Industry | Solder Manufacturing |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2500 |
| Highest Grade | C 1 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Draftsman |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1907 |
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 Ralph | Age | Birth yr |
|---|---|---|---|---|
| Diane Nelson | Daughter | — | 4 | ~1936 |
| Ralph Nelson | Head | — | 33 | ~1907 |
| Doris Nelson | Spouse | — | 31 | ~1909 |
Census Appearances
1920
Cook, Illinois
Son, age 13
Cook, Illinois · implied b. ~1907 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Ralph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 22
Cook, Illinois · implied b. ~1908 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Ralph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Engineer |
| Industry | Cement |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Head, age 33
Cook-County, Illinois · implied b. ~1907 — 3 household members
| Surname | Nelson |
| Given Name | Ralph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | Draftsman |
| Industry | Solder Manufacturing |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2500 |
| Highest Grade | C 1 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Ralph Nelson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Albiny Nelson (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Albiny Nelson
b. ~1885
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ralph Nelson
Head · 1940 · age 33 · b. ~1907 · 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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00987-00401)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Matilda Hunnelundquist | 62 | Wife | Cook | Denmark |
| 2 | Vito Bianco | 30 | Head | Assembler | Italy |
| 3 | Nathalie Bianco | 28 | Wife | — | Illinois |
| 4 | Leona Bianco | 8 | Daughter | — | Illinois |
| 5 | Josephine Bianco | 4 | Daughter | — | Illinois |
| 6 | Bernard La Bella | 25 | Head | Printer | Illinois |
| 7 | Elizabeth La Bella | 21 | Wife | — | Illinois |
| 8 | Martin V. Jensen | 37 | Head | Bartender | Illinois |
| 9 | Shirley Jensen | 24 | Wife | Waitress | South Dakota |
| 10 | Martin Jensen | 1 | Son | — | Illinois |
| 11 | Richard Bauher | 5 | Stepson | — | South Dakota |
| 12 | August Reichardt | 74 | Head | Belt Sander | Germany |
| 13 | Augusta Reichardt | 68 | Wife | — | Germany |
| 14 | George Flannigan | 50 | Son-in-law | Brakeman | North Carolina |
| 15 | Ralph Nelson THIS PERSON | 33 | Head | Draftsman | Illinois |
| 16 | Doris Nelson | 31 | Wife | — | California |
| 17 | Diane Nelson | 4 | Daughter | — | Illinois |
| 18 | Jacob Jacobsen | 76 | Head | — | Norway |
| 19 | Elizabeth Jacobsen | 45 | Daughter | Manager | Illinois |
| 20 | Edna Jacobsen | 44 | Daughter | Dressmaker | Illinois |
| 21 | Louis Jacobsen | 38 | Head | Electric Typer | Illinois |
| 22 | Gertrude Jacobsen | 35 | Wife | — | Illinois |
| 23 | Louis Jacobsen | 15 | Son | — | Illinois |
| 24 | Elaine Jacobsen | 12 | Daughter | — | Illinois |
| 25 | William Jacobsen | 1 | Son | — | Illinois |
| 26 | Wayne Prain | 11 | Boarder | — | Illinois |
| 27 | Ivar Roos | 41 | Head | Repair Man | Illinois |
| 28 | Adeline Roos | 40 | Wife | — | Illinois |
| 29 | Shirley Roos | 17 | Daughter | — | Illinois |
| 30 | Marcia Roos | 12 | Daughter | — | Illinois |
| 31 | Minnie Byron | 59 | Mother-in-law | — | Germany |
| 32 | Holger Youngberg | 54 | Head | Janitor | Denmark |
| 33 | May Youngberg | 58 | Wife | Sewing Machine Operator | Missouri |
| 34 | Fred Youngberg | 58 | Brother | Punch Press Operator | Denmark |
| 35 | Joseph Ostrowski | 51 | Head | Screw Machine Operator | Poland |
| 36 | Mary Ostrowski | 50 | Wife | — | Poland |
| 37 | Harriet Ostrowski | 27 | Daughter | Speedometer Adjuster | Illinois |
| 38 | George Ostrowski | 25 | Son | Wireman | Illinois |
| 39 | Arthur Ostrowski | 23 | Son | Wireman | Illinois |
| 40 | Michael Pavlik | 40 | Head | Woodworker | Germany |
Pedigree Summary
Ralph
Gen 1 · 1 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)