EN
Elmer Nelson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Elmer Nelson across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Elmer & Elmer — first a son (b.~1915), then head of a 6-person household.
Age 25
b. ~1915
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | NELSON |
| Given Name | ELMER JR. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Collector |
| Industry | Telephone Co |
| Class of Worker | PW |
| Hours Worked | 45 |
| Income (1939) | 1400 |
| Highest Grade | C-2 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Collector |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1915 |
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 Elmer | Age | Birth yr |
|---|---|---|---|---|
| Louise Nelson | Spouse | — | 52 | ~1888 |
| Elmer Nelson | Son | — | 25 | ~1915 |
| Elmer Nelson | Head | — | 51 | ~1889 |
| Warren Nelson | Son | — | 19 | ~1921 |
| Elizabeth Hackspiel | Other | — | 80 | ~1860 |
| Lorraine Nelson | Daughter | — | 27 | ~1913 |
Census Appearances
1920
Cook, Illinois
Son, age 5
Cook, Illinois · implied b. ~1915 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Elmer J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Other, age 16
Cook, Illinois · implied b. ~1914 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Elmer J. |
| Relationship to Head | lodger |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | messenger |
| Industry | Bank |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 25
Cook-County, Illinois · implied b. ~1915 — 6 household members
| Surname | NELSON |
| Given Name | ELMER JR. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | Collector |
| Industry | Telephone Co |
| Class of Worker | PW |
| Hours Worked | 45 |
| Income (1939) | 1400 |
| Highest Grade | C-2 |
| 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 Elmer Nelson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Elmer Nelson (~0.92 confidence) and father Elmer Nelson (~0.92 confidence) and mother Louise Nelson (~0.92 confidence) and mother Louise Nelson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Elmer Nelson
b. ~1889
Source father
● Household
· direct · ~0.92
Father
Elmer Nelson
b. ~1889
Source father
● Household
· direct · ~0.92
Mother
Louise Nelson
b. ~1888
Source mother
● Household
· direct · ~0.92
Mother
Louise Nelson
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Elmer Nelson
Son · 1940 · age 25 · b. ~1915 · Illinois
★ You are viewing this record
Sibling
Lorraine Nelson
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Warren Nelson
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
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-t0627-00989-00245)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Edward J Sienicki | 24 | Head | Maintenance | Indiana |
| 2 | Mary Sienicki | 24 | Wife | — | Illinois |
| 3 | Carol Sienicki | 2 | Daughter | — | Illinois |
| 4 | Edward Jr Sienicki | 0 | Son | — | Illinois |
| 5 | Frank Skomowitz | 38 | Head | Porter | Germany |
| 6 | Josephine Skomowitz | 29 | Wife | Singer Machine Operator | Indiana |
| 7 | Charlotte Skomowitz | 4 | Daughter | — | Indiana |
| 8 | Carl Stahl | 39 | Head | Auto Mechanic | Michigan |
| 9 | Marie Stahl | 33 | Wife | — | Illinois |
| 10 | Edward Stahl | 10 | Son | — | Illinois |
| 11 | Richard Stahl | 9 | Son | — | Illinois |
| 12 | George Stahl | 4 | Son | — | Illinois |
| 13 | Agnes Stahl | 1 | Daughter | — | Illinois |
| 14 | Tackla Landsberg | 53 | Head | — | Illinois |
| 15 | Walter Landsberg | 21 | Son | Underwriter | Illinois |
| 16 | Audrey Landsberg | 20 | Daughter | Private Secretary | Illinois |
| 17 | Elmer Nelson | 51 | Head | Cabinet Maker | Illinois |
| 18 | Louise M. Nelson | 52 | Wife | — | Illinois |
| 19 | Lorraine Nelson | 27 | Daughter | Assembler | Illinois |
| 20 | Elmer Jr. Nelson THIS PERSON | 25 | Son | Collector | Illinois |
| 21 | Warren J. Nelson | 19 | Son | Shipping Clerk | Illinois |
| 22 | Elizabeth Hackspiel | 80 | Mother-in-law | — | Switzerland |
| 23 | Hipolit Trela | 54 | Head | Steel Worker | Poland |
| 24 | Mary Trela | 46 | Wife | Tacker | Poland |
| 25 | Marion Trela | 23 | Son | Laborer | Illinois |
| 26 | Casimer Trela | 21 | Son | Assembler | Illinois |
| 27 | Stella Trela | 16 | Daughter | — | Illinois |
| 28 | Edwin M (X) Allen | 32 | Head | Shoe Repairer | Illinois |
| 29 | Elsie Allen | 26 | Wife | — | Illinois |
| 30 | Rosemary Allen | 4 | Daughter | — | Illinois |
| 31 | Edwin Jr. Allen | 2 | Son | — | Illinois |
| 32 | Robert De Vitto | 40 | Head | Truck Driver | Illinois |
| 33 | Alice De Vitto | 36 | Wife | — | Illinois |
| 34 | Ruth De Vitto | 10 | Daughter | — | Illinois |
| 35 | Muriel De Vitto | 8 | Daughter | — | Illinois |
| 36 | Lois De Vitto | 7 | Daughter | — | Illinois |
| 37 | Ronald De Vitto | 5 | Son | — | Illinois |
| 38 | Marcella Ryzewski | 66 | Head | — | Poland |
| 39 | Walter Ryzewski | 35 | Son | — | Illinois |
| 40 | Robert Havel | 39 | Head | Night Watchman | Minnesota |
Pedigree Summary
Elmer + 2 siblings
Gen 1 · 4 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)