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Catherine Kelly — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Catherine Kelly across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Arthur & Elizabeth — first a daughter (b.~1920), then head of a 5-person household.
Age 20
b. ~1920
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Kelly |
| Given Name | Catherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Clerk |
| Industry | Mail order House |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 395 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Clerk |
| Township / Ward | Chicago |
| Est. Birth Year | ~1920 |
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 Catherine | Age | Birth yr |
|---|---|---|---|---|
| Catherine Kelly | Daughter | — | 20 | ~1920 |
| Arthur Kelly | Head | — | 48 | ~1892 |
| George Kelly | Son | — | 17 | ~1923 |
| Arthur Kelly | Son | — | 21 | ~1919 |
| Elizabeth Kelly | Spouse | — | 43 | ~1897 |
Census Appearances
1920
Cook, Illinois
Daughter, age
Cook, Illinois · implied b. ~1920 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kelly |
| Given Name | Catherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| 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 10
Cook, Illinois · implied b. ~1920 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kelly |
| Given Name | Catherine E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 20
Cook-County, Illinois · implied b. ~1920 — 5 household members
| Surname | Kelly |
| Given Name | Catherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Occupation | Clerk |
| Industry | Mail order House |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 395 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| 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 Catherine Kelly across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Arthur Kelly (~0.92 confidence) and mother Elizabeth Kelly (~0.92 confidence) and mother Elizabeth Kelly (~0.92 confidence) and mother Elizabeth Kelly (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Arthur Kelly
b. ~1892
Source father
● Household
· direct · ~0.92
Mother
Elizabeth Kelly
b. ~1896
Source mother
● Household
· direct · ~0.92
Mother
Elizabeth Kelly
b. ~1896
Source mother
● Household
· direct · ~0.92
Mother
Elizabeth Kelly
b. ~1897
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Catherine Kelly
Daughter · 1940 · age 20 · b. ~1920 · Illinois
★ You are viewing this record
Sibling
George Kelly
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arthur Kelly
Sibling · 1940 · age 21
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-t0627-00954-00495)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Tom Morgan | 10 | Son | — | Illinois |
| 2 | John | 8 | Son | — | Illinois |
| 3 | Daniel (X) Moore | 35 | Head | City Policeman | Illinois |
| 4 | Catherine Moore | 32 | Wife | — | Illinois |
| 5 | Marion Moore | 11 | Daughter | — | Illinois |
| 6 | Daniel Jr. Moore | 9 | Son | — | Illinois |
| 7 | Irene Moore | 8 | Daughter | — | Illinois |
| 8 | Frank J. Buehl | 43 | Head | Carpenter | Illinois |
| 9 | Elizabeth Buehl | 32 | Wife | — | Illinois |
| 10 | Mildred Buehl | 14 | Daughter | — | Illinois |
| 11 | Adolph Buehl | 11 | Son | — | Illinois |
| 12 | Edward (X) Kavanaugh | 30 | Head | Laborer | Wisconsin |
| 13 | Ruby Kavanaugh | 28 | Wife | — | Illinois |
| 14 | Phyllis Kavanaugh | 3 | Daughter | — | Illinois |
| 15 | Edward Phalon | 51 | Head | Salesman | Illinois |
| 16 | Florence Phalon | 47 | Wife | — | Illinois |
| 17 | Sumner Phalon | 23 | Son | Toy Clerk | Illinois |
| 18 | Edward Jr. Phalon | 18 | Son | Machine Helper | Illinois |
| 19 | Gloria Phalon | 11 | Daughter | — | Illinois |
| 20 | Florence Kavanaugh | 27 | Sister | Art Teacher | Illinois |
| 21 | Thomas Donovan | 59 | Head | Trucker | Ireland |
| 22 | Henrietta Donovan | 60 | Wife | — | Ireland |
| 23 | Jane Donovan | 23 | Son | — | Illinois |
| 24 | James Curran | 32 | Head | Driver | Ireland |
| 25 | Elizabeth Curran | 32 | Wife | — | Ireland |
| 26 | James Curran | 8 | Son | — | Illinois |
| 27 | Eileen Curran | 2 | Daughter | — | Illinois |
| 28 | Clare Carlson | 30 | Head | Laborer | Illinois |
| 29 | Catherine Carlson | 30 | Wife | — | Illinois |
| 30 | Sandra Carlson | 3 | Daughter | — | Illinois |
| 31 | John Backas | 38 | Head | Press Operator | Illinois |
| 32 | Mary (X) Backas | 33 | Wife | — | Hungary |
| 33 | Elizabeth Backas | 14 | Daughter | — | Hungary |
| 34 | Mary Backas | 11 | Daughter | — | Illinois |
| 35 | Elizabeth Argen | 43 | Sister-in-law | — | Illinois |
| 36 | Arthur Kelly | 48 | Head | Clerk | Illinois |
| 37 | Elizabeth Kelly | 43 | Wife | — | Illinois |
| 38 | Arthur Kelly | 21 | Son | Truck Driver | Illinois |
| 39 | Catherine Kelly THIS PERSON | 20 | Daughter | Clerk | Illinois |
| 40 | George Kelly | 17 | Son | — | Illinois |
Related Census Records
Pedigree Summary
Catherine + 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)