EN
Ethel Nelson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Ethel Nelson across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Nicholas & Anna — first a daughter (b.~1907), then head of a 2-person household.
Age 33
b. ~1907
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Nelson |
| Given Name | Ethel L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2100 |
| Highest Grade | C 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Teacher |
| 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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ethel | Age | Birth yr |
|---|---|---|---|---|
| Ethel Nelson | Daughter | — | 33 | ~1907 |
| Ida Nelson | Head | — | 74 | ~1866 |
Census Appearances
1920
Cook, Illinois
Daughter, age 12
Cook, Illinois · implied b. ~1908 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Ethel |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Daughter, age 22
Cook, Illinois · implied b. ~1908 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Ethel S |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Illinois |
| Occupation | Bookkeeper |
| Industry | Wholesale Grocery |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 33
Cook-County, Illinois · implied b. ~1907 — 2 household members
| Surname | Nelson |
| Given Name | Ethel L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2100 |
| Highest Grade | C 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 Ethel Nelson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Nicholas Nelson (~0.92 confidence) and mother Anna Nelson (~0.92 confidence) and mother Ida Nelson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Nicholas Nelson
b. ~1881
Source father
● Household
· direct · ~0.92
Mother
Anna Nelson
b. ~1888
Source mother
● Household
· direct · ~0.92
Mother
Ida Nelson
b. ~1866
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ethel Nelson
Daughter · 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-t0627-00934-00560)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William Kehlenbach | 70 | Lodger | Salesman | Illinois |
| 42 | Edith Kehlenbach | 70 | Lodger | — | Ohio |
| 43 | Rose Wanhers | 64 | Lodger | — | Illinois |
| 44 | Laura Beales | 79 | Head | — | Illinois |
| 45 | Frank B. Hargrove | 44 | Head | Salesman | New York |
| 46 | Sophie Hargrove | 43 | Wife | — | Wisconsin |
| 47 | Walter Hargrove | 19 | Son | — | Illinois |
| 48 | Edward Hargrove | 15 | Son | — | Wisconsin |
| 49 | Jack Faraway | 25 | Head | Engineer | Illinois |
| 50 | Phyllis Faraway | 26 | Wife | — | Ohio |
| 51 | Sandra Faraway | 2 | Daughter | — | Illinois |
| 52 | William H. Gould | 44 | Head | Accountant | Canada-English |
| 53 | Frances Gould | 38 | Wife | — | England |
| 54 | Ray Gould | 11 | Son | — | Illinois |
| 55 | Jay Lindner | 39 | Head | Salesman | Michigan |
| 56 | Jessie Lindner | 28 | Wife | — | New York |
| 57 | Mary J. Lindner | 8 | Daughter | — | Illinois |
| 58 | Mary J. Borris | 25 | Maid | Maid | Illinois |
| 59 | Charles Fischer | 32 | Head | Clerk | Illinois |
| 60 | Mildred Fischer | 31 | Wife | — | Illinois |
| 61 | Karen Fischer | 1 | Daughter | — | Illinois |
| 62 | Myron Dammer | 35 | Head | Maintenance | New York |
| 63 | Ethel Dammer | 35 | Wife | — | Illinois |
| 64 | Milton Dammer | 9 | Son | — | Illinois |
| 65 | Doris Dammer | 8 | Daughter | — | Illinois |
| 66 | Lois Davis | 43 | Head | Engineer | Kansas |
| 67 | Lois Davis | 38 | Wife | — | Kansas |
| 68 | Doris Davis | 11 | Daughter | — | Kansas |
| 69 | Leah Stader | 57 | Head | — | Russia |
| 70 | Gertrude Stader | 31 | Daughter | Stenographer | Illinois |
| 71 | Thomas Fitzgerald | 31 | Head | Clerk | Illinois |
| 72 | Emily Fitzgerald | 28 | Wife | — | Michigan |
| 73 | Anthony Horneck | 38 | Head | Clerk | Illinois |
| 74 | Mayme Horneck | 33 | Wife | — | England |
| 75 | Anthony Horneck | 11 | Son | — | Illinois |
| 76 | Gloria Horneck | 8 | Daughter | — | Illinois |
| 77 | Phillip B. Borick | 40 | Head | Manager | England |
| 78 | Sarah Borick | 39 | Wife | Maker | Illinois |
| 79 | Ida Nelson | 74 | Head | — | Sweden |
| 80 | Ethel L. Nelson THIS PERSON | 33 | Daughter | Teacher | Illinois |
Related Census Records
Pedigree Summary
Ethel
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)