JC
James Connor — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this James Connor across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Thomas & Julia — first a son (b.~1904), then head of a 3-person household.
Age 36
b. ~1904
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Connor |
| Given Name | James |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Cicero |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | electrician |
| Industry | construction |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 314 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Electrician |
| Township / Ward | Cicero |
| Est. Birth Year | ~1904 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Tom Connor | Son | — | 33 | ~1907 |
| James Connor | Son | — | 36 | ~1904 |
| Julia Connor | Head | — | 56 | ~1884 |
Census Appearances
1920
Cook, Illinois
Son, age 14
Cook, Illinois · implied b. ~1906 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Connors |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| 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
Son, age 24
Cook, Illinois · implied b. ~1906 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Connors |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Electrician |
| Industry | Contractor |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 36
Cook-County, Illinois · implied b. ~1904 — 3 household members
| Surname | Connor |
| Given Name | James |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Cicero |
| 1935 Residence (County) | Cook |
| Occupation | electrician |
| Industry | construction |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 314 |
| Highest Grade | No 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 James Connor across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Thomas Connors (~0.92 confidence) and mother Julia Connors (~0.92 confidence) and mother Julia Connor (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thomas Connors
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Julia Connors
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Julia Connor
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Connor
Son · 1940 · age 36 · b. ~1904 · Illinois
★ You are viewing this record
Sibling
Tom Connor
Sibling · 1940 · age 33
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-t0627-00776-01022)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Albert Lucky | 74 | head | — | Czechoslovakia |
| 2 | Jenny Lucky | 70 | wife | — | Czechoslovakia |
| 3 | George Lucky | 36 | son | Laborer | Illinois |
| 4 | Blanche Lucky | 34 | daughter | Nurse | Illinois |
| 5 | Frank Hoffman | 57 | head | — | Czechoslovakia |
| 6 | Anna Hoffman | 48 | wife | — | Illinois |
| 7 | Mildred Hoffman | 27 | daughter | Office Worker | Illinois |
| 8 | Eleanor Hoffman | 25 | daughter | Stenographer | Illinois |
| 9 | Claire Hoffman | 23 | daughter | File Clerk | Illinois |
| 10 | John Sobol | 30 | head | Vocational Teacher | Illinois |
| 11 | Harriet Sobol | 25 | wife | — | Illinois |
| 12 | Louis Jr. Solar | 37 | head | Proprietor | Illinois |
| 13 | Helen Solar | 36 | wife | — | Illinois |
| 14 | Graham Solar | 14 | son | — | Kentucky |
| 15 | Lawrence Capra | 35 | head | Inspector | Illinois |
| 16 | Sylvia Capra | 31 | wife | — | Illinois |
| 17 | John Paul | 41 | head | Architect | Illinois |
| 18 | Helen Paul | 38 | wife | — | Illinois |
| 19 | Joan Paul | 8 | daughter | — | Illinois |
| 20 | John Burzak | 37 | head | Upholsterer | Illinois |
| 21 | Emily Burzak | 33 | wife | — | Illinois |
| 22 | Richard Burzak | 11 | son | — | Illinois |
| 23 | Aurelia Burzak | 10 | daughter | — | Illinois |
| 24 | Coreen Burzak | 1 | daughter | — | Illinois |
| 25 | Edward Zalud | 36 | head | Service Man | Illinois |
| 26 | Sylvia Zalud | 35 | wife | — | Illinois |
| 27 | Ruth Ann Zalud | 8 | daughter | — | Illinois |
| 28 | James Kozak | 57 | head | Shop Foreman | Illinois |
| 29 | Mary Kozak | 56 | wife | — | Czechoslovakia |
| 30 | Joseph Janda Jr. | 37 | head | Auditor | Illinois |
| 31 | Mildred Janda Jr. | 34 | daughter | — | Illinois |
| 32 | Carmella Janda Jr. | 1 | granddaughter | — | Illinois |
| 33 | Julia Connor | 56 | head | — | Illinois |
| 34 | James Connor THIS PERSON | 36 | son | Electrician | Illinois |
| 35 | Tom Connor | 33 | son | Musician | Illinois |
| 36 | William Burzak | 54 | head | Chauffeur | Illinois |
| 37 | Jean Burzak | 22 | daughter | Waitress | Illinois |
| 38 | James Hanz | 27 | head | Proprietor | Illinois |
| 39 | Ann Hanz | 27 | daughter | — | Illinois |
| 40 | Jimmy Hanz | 2 | grandson | — | Illinois |
Pedigree Summary
James + 1 sibling
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)