RN
Roy Nelson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Roy Nelson across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Archie & Ollie — first a head (b.~1911), then head of a 3-person household.
Age 29
b. ~1911
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Nelson |
| Given Name | Roy |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Lithographer |
| Industry | Can factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2400 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Lithographer |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1911 |
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 Roy | Age | Birth yr |
|---|---|---|---|---|
| Roy Nelson | Head | — | 29 | ~1911 |
| Mary Nelson | Spouse | — | 27 | ~1913 |
| William Nelson | Son | — | 2 | ~1938 |
Census Appearances
1920
Cook, Illinois
Son, age 8
Cook, Illinois · implied b. ~1912 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Roy |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Missouri |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 18
Cook, Illinois · implied b. ~1912 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Ray |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Missouri |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Head, age 29
Cook-County, Illinois · implied b. ~1911 — 3 household members
| Surname | Nelson |
| Given Name | Roy |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | Lithographer |
| Industry | Can factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2400 |
| Highest Grade | H-4 |
| 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 Roy Nelson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Archie Nelson (~0.92 confidence) and mother Ollie Nelson (~0.92 confidence) and mother Ollie Nelson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Archie Nelson
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Ollie Nelson
b. ~1888
Source mother
● Household
· direct · ~0.92
Mother
Ollie Nelson
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Roy Nelson
Head · 1940 · age 29 · b. ~1911 · 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-t0627-00991-00029)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Genevieve S. Darmody | 25 | Daughter | Shirt Finisher | Illinois |
| 2 | Lillian J. Darmody | 22 | Daughter | Packer | Illinois |
| 3 | Jane M. Darmody | 20 | Daughter | 56 | Illinois |
| 4 | Helen A. Darmody | 20 | Daughter | Packer | Illinois |
| 5 | Michael Mularski | 33 | Head | Selector | Pennsylvania |
| 6 | Marion Mularski | 27 | Wife | Comptometer | Illinois |
| 7 | Frank R. Borchoven | 58 | Head | Machinist | Illinois |
| 8 | Bessie A. Borchoven | 56 | Wife | — | Illinois |
| 9 | Edward P. Borchoven | 32 | Son | Apprentice Machinist | Illinois |
| 10 | George P. Borchoven | 31 | Head | Clerk | Illinois |
| 11 | Charlotte Borchoven | 29 | Wife | — | Illinois |
| 12 | Mary D. Borchoven | 4 | Daughter | — | Illinois |
| 13 | Raymond Damsztrowski | 32 | Head | Sheet Metal Worker | Illinois |
| 14 | Bernice Damsztrowski | 30 | Wife | Beauty Culture | Illinois |
| 15 | Frances J. Damsztrowski | 2 | Daughter | — | Illinois |
| 16 | Anna Witek | 55 | Mother in law | — | Poland |
| 17 | Roy Nelson THIS PERSON | 29 | Head | Lithographer | Illinois |
| 18 | Mary A. Nelson | 27 | Wife | — | Illinois |
| 19 | William Nelson | 2 | Son | — | Illinois |
| 20 | John F. Jagielski | 50 | Head | Machinist | Poland |
| 21 | Rose Jagielski | 49 | Wife | Seamstress | Poland |
| 22 | Robert J. Jagielski | 20 | Son | 26 | Illinois |
| 23 | John K. Jagielski | 18 | Son | Chrome Plater | Illinois |
| 24 | Jerome Jagielski | 14 | Son | — | Illinois |
| 25 | Donald Jagielski | 13 | Son | — | Illinois |
| 26 | Robert Jagielski | 11 | Son | — | Illinois |
| 27 | John Dalke | 41 | Head | Shipping Clerk | Illinois |
| 28 | Frances Dalke | 43 | Wife | Seamstress | Illinois |
| 29 | John Dalke | 15 | Son | — | Illinois |
| 30 | Antoinette Kaczmarek | 69 | Mother in law | — | Poland |
| 31 | John D. Waller | 33 | Head | Cutter | Illinois |
| 32 | Marie C. Waller | 37 | Wife | — | Illinois |
| 33 | Joseph Dworski | 46 | Head | Tailor | Poland |
| 34 | Marie Dworski | 45 | Wife | Helper | Poland |
| 35 | Gladys J. Dworski | 12 | Daughter | — | Illinois |
| 36 | Frank Nowakowski | 43 | Head | 65 | Illinois |
| 37 | Martha Nowakowski | 35 | Wife | — | Illinois |
| 38 | Dolores M. Nowakowski | 15 | Daughter | — | Illinois |
| 39 | Elaine A. Nowakowski | 7 | Daughter | — | Illinois |
| 40 | Helen Urbanek | 33 | Head | Push Button | Lithuania |
Pedigree Summary
Roy
Gen 1 · 3 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)