DK
Dorothy Kelly — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Dorothy Kelly across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Paul & Robert — first a daughter (b.~1914), then head of a 6-person household.
Age 26
b. ~1914
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Kelly |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1914 |
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 Dorothy | Age | Birth yr |
|---|---|---|---|---|
| Dorothy Kelly | Daughter | — | 26 | ~1914 |
| Paul Kelly | Head | — | 51 | ~1889 |
| Robert Kelly | Son | — | 8 | ~1932 |
| Annie Kelly | Spouse | — | 49 | ~1891 |
| Geraldine Kelly | Daughter | — | 17 | ~1923 |
| Shirley Kelly | Daughter | — | 20 | ~1920 |
Census Appearances
1920
Cook, Illinois
Daughter, age 4
Cook, Illinois · implied b. ~1916 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kelley |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Daughter, age 15
Cook, Illinois · implied b. ~1915 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kelly |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read/Write | Yes |
| Home Owned/Rented | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 26
Cook-County, Illinois · implied b. ~1914 — 6 household members
| Surname | Kelly |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | No 7 |
| 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 Dorothy Kelly across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Paul Kelly (~0.92 confidence) and father Robert Kelley (~0.92 confidence) and father Thomas Kelly (~0.92 confidence) and mother Annie Kelly (~0.92 confidence) and mother Bertha Kelley (~0.92 confidence) and mother Jennie Kelly (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Paul Kelly
b. ~1889
Source father
● Household
· direct · ~0.92
Father
Robert Kelley
b. ~1890
Source father
● Household
· direct · ~0.92
Father
Thomas Kelly
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Annie Kelly
b. ~1891
Source mother
● Household
· direct · ~0.92
Mother
Bertha Kelley
b. ~1887
Source mother
● Household
· direct · ~0.92
Mother
Jennie Kelly
b. ~1893
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Dorothy Kelly
Daughter · 1940 · age 26 · b. ~1914 · Illinois
★ You are viewing this record
Sibling
Robert Kelly
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Shirley Kelly
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Geraldine Kelly
Sibling · 1940 · age 17
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-t0627-00977-00117)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mike Catenazzo | 58 | Head | — | Italy |
| 2 | Elizabeth Catenazzo | 58 | Wife | — | Italy |
| 3 | Mike Catenazzo | 23 | Son | Millwright | Illinois |
| 4 | Michael Pellegrino | 30 | Head | Laborer | Illinois |
| 5 | Margaret Pellegrino | 22 | Wife | — | Illinois |
| 6 | Nicholas Pellegrino | 2 | Son | — | Illinois |
| 7 | Michael Pellegrino | 1 | Son | — | Illinois |
| 8 | Louis Metajoria | 24 | Head | Truck Helper | Illinois |
| 9 | Marie Metajoria | 21 | Wife | Riveter | Illinois |
| 10 | Johnie Metajoria | 2 | Son | — | Illinois |
| 11 | Mike Malagallio | 25 | Head | Bundeling | Italy |
| 12 | Alba Malagallio | 21 | Wife | — | Illinois |
| 13 | Nick Malagallio | 2 | Son | — | Illinois |
| 14 | Angelo Vozella | 49 | Head | Foreman | Italy |
| 15 | Angeline Vozella | 45 | Wife | — | Italy |
| 16 | Peter Vozella | 27 | Son | Inspector | Illinois |
| 17 | Mildred Vozella | 22 | Daughter | New Worker | Illinois |
| 18 | Patrick Vozella | 59 | Brother | Laborer | Italy |
| 19 | Paul Kelly | 51 | Head | 27 | Illinois |
| 20 | Annie Kelly | 49 | Wife | — | Illinois |
| 21 | Dorothy Kelly THIS PERSON | 26 | Daughter | — | Illinois |
| 22 | Shirley Kelly | 20 | Daughter | — | Illinois |
| 23 | Geraldine Kelly | 17 | Daughter | — | Illinois |
| 24 | Robert Kelly | 8 | Son | — | Illinois |
| 25 | Nunzio Giambalvo | 38 | Head | Tailor | Louisiana |
| 26 | Jennie Giambalvo | 34 | Wife | — | Michigan |
| 27 | Frank Giambalvo | 9 | Son | — | Illinois |
| 28 | Roy Giambalvo | 6 | Son | — | Illinois |
| 29 | George Giambalvo | 4 | Son | — | Illinois |
| 30 | Rosemary Giambalvo | 2 | Daughter | — | Illinois |
| 31 | Vito Zullo | 44 | Head | Laborer | Italy |
| 32 | Rose Zullo | 42 | Wife | — | Italy |
| 33 | Dominick Zullo | 17 | Son | — | Italy |
| 34 | Frankie Zullo | 13 | Son | — | Illinois |
| 35 | Angeline Zullo | 12 | Daughter | — | Illinois |
| 36 | Grace Zullo | 5 | Daughter | — | Illinois |
| 37 | Frank Maggio | 21 | Head | Laborer | Illinois |
| 38 | Walter Maggio | 16 | Brother | Tally Boy | Illinois |
| 39 | Eddie Maggio | 17 | Brother | New Worker | Illinois |
| 40 | John Maggio | 15 | Brother | — | Illinois |
Pedigree Summary
Dorothy + 3 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)