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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 1910, 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents John & Samuel — first a daughter (b.~1910), then head of a 5-person household.
Age 30
b. ~1910
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 | 30 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | GW |
| Hours Worked | 36 |
| Income (1939) | 1900 |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Teacher |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1910 |
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 Dorothy | Age | Birth yr |
|---|---|---|---|---|
| Dorothy Kelly | Daughter | — | 30 | ~1910 |
| Virginia Kelly | Daughter | — | 22 | ~1918 |
| William Kelly | Head | — | 53 | ~1887 |
| Lawrence Kelly | Son | — | 17 | ~1923 |
| Joan Kelly | Daughter | — | 12 | ~1928 |
Census Appearances
1910
Cook, Illinois
Daughter, age 1
Cook, Illinois · implied b. ~1909 — 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 | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Cook, Illinois
Daughter, age 10
Cook, Illinois · implied b. ~1910 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kelly |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Wisconsin |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Daughter, age 21
Cook, Illinois · implied b. ~1909 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kelly |
| Given Name | Dorothy |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Teacher |
| Industry | High school |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 30
Cook-County, Illinois · implied b. ~1910 — 5 household members
| Surname | Kelly |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | GW |
| Hours Worked | 36 |
| Income (1939) | 1900 |
| Highest Grade | H 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 Dorothy Kelly across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Kelly (~0.92 confidence) and father Samuel Giardine (~0.60 confidence) and father William Kelly (~0.92 confidence) and father William Kelly (~0.92 confidence) and mother Jennie Kelly (~0.92 confidence) and mother Loretta Kelly (~0.92 confidence) and mother Starr Giardine (~0.60 confidence). The pedigree spans 1 generation with 7 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.83
Father
John Kelly
b. ~1887
Source father
● Household
· direct · ~0.92
Father
Samuel Giardine
b. ~1904
Source father
● Household
· direct · ~0.6
Father
William Kelly
b. ~1867
Source father
● Household
· direct · ~0.92
Father
William Kelly
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Jennie Kelly
b. ~1886
Source mother
● Household
· direct · ~0.92
Mother
Loretta Kelly
b. ~1872
Source mother
● Household
· direct · ~0.92
Mother
Starr Giardine
b. ~1904
Source mother
● Household
· direct · ~0.6
This person
Anchor record
Dorothy Kelly
Daughter · 1940 · age 30 · b. ~1910 · Illinois
★ You are viewing this record
Sibling
Lawrence Kelly
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joan Kelly
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Virginia Kelly
Sibling · 1940 · age 22
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-t0627-00935-00630)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William J Kelly | 53 | Head | Chief Clerk | Illinois |
| 2 | Dorothy Kelly THIS PERSON | 30 | Daughter | Teacher | Illinois |
| 3 | Virginia Kelly | 22 | Daughter | Stenographer | Illinois |
| 4 | Lawrence Kelly | 17 | Son | — | Illinois |
| 5 | Joan Kelly | 12 | Daughter | — | Illinois |
| 6 | J Milburn Smith | 32 | Head | Executive | Missouri |
| 7 | Irene Smith | 27 | Wife | — | Illinois |
| 8 | Janis May Smith | 5 | Daughter | — | Illinois |
| 9 | Lillian L Smith | 2 | Daughter | — | Illinois |
| 10 | Lala May Smith | 59 | Mother | — | Missouri |
| 11 | Anna Byrd | 40 | Maid | Housework | Michigan |
| 12 | Margaret Mcger | 62 | Head | Teacher | Illinois |
| 13 | Donald T Mcger | 31 | Son | — | Minnesota |
| 14 | Dominick J Mcger | 21 | Son | — | Minnesota |
| 15 | Samuel J Creswell | 46 | Head | Superintendent | Illinois |
| 16 | Mary Creswell | 45 | Wife | — | Illinois |
| 17 | Thomas Creswell | 19 | Son | — | Illinois |
| 18 | Richard Creswell | 15 | Son | — | Illinois |
| 19 | James Creswell | 8 | Son | — | Illinois |
| 20 | Martha Curtis | 65 | Head | — | Canada |
| 21 | Margaret Doherty | 58 | Head | — | Illinois |
| 22 | Mary Doherty | 57 | Daughter | Milliner | Washington |
| 23 | Beatrice Doherty | 52 | Sister | Teacher | Illinois |
| 24 | Samuel Hofman | 34 | Head | Manager | Illinois |
| 25 | Sylvia Hofman | 33 | Wife | — | Illinois |
| 26 | Barbara Hofman | 9 | Daughter | — | Illinois |
| 27 | Paul Hofman | 1 | Son | — | Illinois |
| 28 | Anna Goldstein | 52 | Mother in law | — | Russia |
| 29 | Cecil Goldstein | 29 | Brother in law | Saleslady | Illinois |
| 30 | Fred R Felcher | 50 | Head | Dentist | New York |
| 31 | Bernadine Felcher | 41 | Wife | — | Illinois |
| 32 | June Felcher | 16 | Daughter | — | Illinois |
| 33 | Nina A Week | 52 | Head | Teacher | Illinois |
| 34 | Ann Week | 28 | Daughter | Secretary | Illinois |
| 35 | Nina Week | 24 | Daughter | — | Missouri |
| 36 | Frederick Week | 21 | Son | — | Illinois |
| 37 | Daniel Week | 14 | Son | — | Illinois |
| 38 | Thomas J Downs | 36 | Head | Lawyer | Indiana |
| 39 | Francis Downs | 35 | Wife | — | Indiana |
| 40 | Sara A Downs | 5 | Daughter | — | Illinois |
Pedigree Summary
Dorothy + 3 siblings
Gen 1 · 7 parents
~0.83
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)