JC
James Clark — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this James Clark across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Philip & Agnes — first a head (b.~1900), then head of a 5-person household.
Age 40
b. ~1900
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Clark |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Electrician |
| Industry | City Lighting Dept |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 3200 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Electrician |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1900 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| Joan Clark | Daughter | — | 14 | ~1926 |
| James Clark | Head | — | 40 | ~1900 |
| Timothy Clark | Son | — | 4 | ~1936 |
| James Clark | Son | — | 13 | ~1927 |
| Cathryn Clark | Spouse | — | 44 | ~1896 |
Census Appearances
1920
Cook, Illinois
Son, age 20
Cook, Illinois · implied b. ~1900 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Canada |
| Occupation | Electrician |
| Industry | Electric Co. |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Head, age 30
Cook, Illinois · implied b. ~1900 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 20 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Penn. (U.S.) |
| Occupation | Electrician |
| Industry | Street Rail. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 65.00 |
| Radio Set | R |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Head, age 40
Cook-County, Illinois · implied b. ~1900 — 5 household members
| Surname | Clark |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | Electrician |
| Industry | City Lighting Dept |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 3200 |
| Highest Grade | H 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 Clark across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Philip Clark (~0.92 confidence) and mother Agnes Clark (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Philip Clark
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Agnes Clark
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Clark
Head · 1940 · age 40 · b. ~1900 · Illinois
★ You are viewing this record
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-t0627-00981-00855)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James Clark THIS PERSON | 40 | Head | Electrician | Illinois |
| 2 | Cathryn Clark | 44 | Wife | — | Illinois |
| 3 | Joan Clark | 14 | Daughter | New Worker | Illinois |
| 4 | James Jr. Clark | 13 | Son | — | Illinois |
| 5 | Timothy Clark | 4 | Son | — | Illinois |
| 6 | Tony Ferraro | 47 | Head | Presser | Italy |
| 7 | Carmela Ferraro | 40 | Wife | — | Italy |
| 8 | Josephine Ferraro | 17 | Daughter | — | Illinois |
| 9 | Carolyn Ferraro | 15 | Daughter | — | Illinois |
| 10 | Margaret Ferraro | 5 | Daughter | — | Illinois |
| 11 | Frank Serra | 62 | Head | Machinist | Italy |
| 12 | Nicholas Serra | 50 | Head | Music Teacher | Italy |
| 13 | Lucy Serra | 53 | Wife | — | Italy |
| 14 | Sylvia Serra | 18 | Daughter | New Worker | Illinois |
| 15 | Concetta Serra | 12 | Daughter | — | Illinois |
| 16 | Joseph D. Logiurto | 44 | Head | Maintenance Worker | Italy |
| 17 | Angelina Logiurto | 39 | Wife | — | Italy |
| 18 | Frank Logiurto | 12 | Son | — | Illinois |
| 19 | Daniel Logiurto | 11 | Son | — | Illinois |
| 20 | Carmella Logiurto | 68 | Head | — | Italy |
| 21 | John Logiurto | 27 | Son | Painter Apprentice | Illinois |
| 22 | Louise Logiurto | 23 | Daughter | Saleser | Ohio |
| 23 | Bert J. Morris | 59 | Head | Printer | Illinois |
| 24 | Grace May Morris | 56 | Wife | — | Illinois |
| 25 | Jeannette Edna Morris | 32 | Daughter | Secretary | Illinois |
| 26 | Michael Clarizio | 61 | Head | Maintenance | Italy |
| 27 | Ella Clarizio | 57 | Wife | — | Wisconsin |
| 28 | James Jackson | 48 | Head | — | Illinois |
| 29 | Edith Jackson | 45 | Wife | — | Illinois |
| 30 | Otto Selvachino | 42 | Head | Clerk | Missouri |
| 31 | Esther Selvachino | 35 | Wife | — | Ohio |
| 32 | Wendy Selvachino | 0 | Daughter | — | Illinois |
| 33 | William Wainecki | 64 | Father-in-law | — | Germany |
| 34 | Frank Tessitore | 45 | Head | Fireman | Italy |
| 35 | Samuel Gustello | 41 | Head | Laborer | Italy |
| 36 | Marie Gustello | 39 | Wife | — | Illinois |
| 37 | Marie Stella Gustello | 18 | Daughter | — | Illinois |
| 38 | Frances Gustello | 17 | Daughter | — | Illinois |
| 39 | Lawrence Gustello | 13 | Son | — | Illinois |
| 40 | Michael Casey | 31 | Head | Calendar Operator | Illinois |
Pedigree Summary
James
Gen 1 · 2 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)