ES
Ellen Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Ellen Smith across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Frank & John — first a daughter (b.~1912), then head of a 5-person household.
Age 28
b. ~1912
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Smith |
| Given Name | Ellen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Cicero town |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | accountant |
| Industry | department store retail |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 210 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Accountant |
| Township / Ward | Cicero Town |
| Est. Birth Year | ~1912 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ellen | Age | Birth yr |
|---|---|---|---|---|
| Ellen Smith | Daughter | — | 28 | ~1912 |
| Gertrude Smith | Daughter | — | 25 | ~1915 |
| John Smith | Head | — | 61 | ~1879 |
| Henry Smith | Son | — | 24 | ~1916 |
| Annie Smith | Spouse | — | 58 | ~1882 |
Census Appearances
1920
Cook, Illinois
Daughter, age 7
Cook, Illinois · implied b. ~1913 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Elaine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| 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 18
Cook, Illinois · implied b. ~1912 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Elaine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Austria-Hungary |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 28
Cook-County, Illinois · implied b. ~1912 — 5 household members
| Surname | Smith |
| Given Name | Ellen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Cicero town |
| 1935 Residence (County) | Cook |
| Occupation | accountant |
| Industry | department store retail |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 210 |
| Highest Grade | 8 |
| 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 Ellen Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Frank Smith (~0.92 confidence) and father John Smith (~0.92 confidence) and mother Josephine Smith (~0.92 confidence) and father John Smith (~0.92 confidence) and mother Annie Smith (~0.92 confidence) and mother Clair Smith (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Frank Smith
b. ~1877
Source father
● Household
· direct · ~0.92
Father
John Smith
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Josephine Smith
b. ~1879
Source mother
● Household
· direct · ~0.92
Father
John Smith
b. ~1881
Source father
● Household
· direct · ~0.92
Mother
Annie Smith
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Clair Smith
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ellen Smith
Daughter · 1940 · age 28 · b. ~1912 · Illinois
★ You are viewing this record
Sibling
Gertrude Smith
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Henry Smith
Sibling · 1940 · age 24
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-t0627-00776-00506)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Leonard Michalski | 29 | Head | Salesman | Illinois |
| 2 | Harriet Michalski | 25 | Wife | Waitress | Michigan |
| 3 | Leonard Jr. Michalski | 2 | Son | — | Illinois |
| 4 | Stella Ciesielski | 52 | Mother in law | Waitress | Poland |
| 5 | John Smith | 61 | Head | Yard Man | Illinois |
| 6 | Annie Smith | 58 | Wife | — | Illinois |
| 7 | Ellen Smith THIS PERSON | 28 | Daughter | Accountant | Illinois |
| 8 | Gertrude Smith | 25 | Daughter | Bookkeeper | Illinois |
| 9 | Henry Smith | 24 | Son | Clerical | Illinois |
| 10 | Albert Novak | 52 | Head | Freight Checker | Poland |
| 11 | Mary Novak | 48 | Wife | — | Illinois |
| 12 | Helen Novak | 23 | Daughter | Private Secretary | Illinois |
| 13 | Florence Novak | 21 | Daughter | — | Illinois |
| 14 | Lorella Novak | 12 | Daughter | — | Illinois |
| 15 | Frank Wachbrod | 54 | Head | General Clerical | Illinois |
| 16 | Anna Wachbrod | 53 | Wife | — | Illinois |
| 17 | Gertrude Wachbrod | 30 | Daughter | General Clerical | Illinois |
| 18 | Anna Wachbrod | 23 | Daughter | Clerical | Illinois |
| 19 | William Wieland | 55 | Son in law | Police Operator | Illinois |
| 20 | Angela Wieland | 70 | Head | — | Poland |
| 21 | John Plaza | 43 | Brother | Laborer | Poland |
| 22 | Harriet Plaza | 30 | Niece | Maker | Illinois |
| 23 | Foster Parker | 47 | Head | Mechanical Engineer | Alabama |
| 24 | Emma Parker | 36 | Wife | — | Illinois |
| 25 | Melvin Parker | 16 | Son | — | Illinois |
| 26 | Norma Parker | 10 | Daughter | — | Illinois |
| 27 | Peter Janulewicz | 63 | Head | Punch Press Operator | Poland |
| 28 | Mary Janulewicz | 57 | Wife | — | Poland |
| 29 | John Janulewicz | 25 | Son | Inspector | Illinois |
| 30 | Emelia Janulewicz | 23 | Daughter | Receptionist | Illinois |
| 31 | Florian Janulewicz | 20 | Son | Punch Press Operator | Illinois |
| 32 | Helene Janulewicz | 17 | Daughter | — | Illinois |
| 33 | Rosemary Janulewicz | 10 | Daughter | — | Illinois |
| 34 | Steve Dasilia | 54 | Head | Proprietor | Greece |
| 35 | Helen Dasilia | 41 | Wife | — | Greece |
| 36 | Katherine Dasilia | 19 | Daughter | Typist-File | Illinois |
| 37 | Christine Dasilia | 15 | Daughter | — | Illinois |
| 38 | James Dasilia | 12 | Son | — | Illinois |
| 39 | Edward Turing | 31 | Head | Salesman | Illinois |
| 40 | Dorothy Turing | 26 | Wife | — | Illinois |
Related Census Records
Pedigree Summary
Ellen + 2 siblings
Gen 1 · 6 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)