GC
George Cook — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this George Cook across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Charles & Chas — first a head (b.~1905), then head of a 5-person household.
Age 35
b. ~1905
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Cook |
| Given Name | George |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago city |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Chauffeur (Delivery) |
| Industry | Retail Grocery |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 132 |
| Highest Grade | 8 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Chauffeur |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1905 |
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 George | Age | Birth yr |
|---|---|---|---|---|
| Florence Cook | Daughter | — | 10 | ~1930 |
| Catherine Cook | Daughter | — | 7 | ~1933 |
| George Cook | Head | — | 35 | ~1905 |
| George Cook | Son | — | 5 | ~1935 |
| Ann Cook | Spouse | — | 30 | ~1910 |
Census Appearances
1920
Cook, Illinois
Son, age 13
Cook, Illinois · implied b. ~1907 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | George |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| 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
Son, age 24
Cook, Illinois · implied b. ~1906 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | George |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Wisconsin |
| Occupation | Chemist |
| Industry | Paints |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Head, age 35
Cook-County, Illinois · implied b. ~1905 — 5 household members
| Surname | Cook |
| Given Name | George |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago city |
| 1935 Residence (County) | Cook |
| Occupation | Chauffeur (Delivery) |
| Industry | Retail Grocery |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 132 |
| Highest Grade | 8 |
| 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 George Cook across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Charles Cook (~0.92 confidence) and father Chas Cook (~0.92 confidence) and mother Margaret Cook (~0.92 confidence) and mother Margaret Cook (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charles Cook
b. ~1872
Source father
● Household
· direct · ~0.92
Father
Chas Cook
b. ~1872
Source father
● Household
· direct · ~0.92
Mother
Margaret Cook
b. ~1873
Source mother
● Household
· direct · ~0.92
Mother
Margaret Cook
b. ~1876
Source mother
● Household
· direct · ~0.92
This person
Anchor record
George Cook
Head · 1940 · age 35 · b. ~1905 · 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-t0627-00962-00688)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mike Vanderdyke | 35 | Head | Janitor | Holland |
| 2 | Agnes Vanderdyke | 30 | Wife | — | Illinois |
| 3 | Allen Vanderdyke | 4 | Son | — | Illinois |
| 4 | Albert Higgins | 53 | Head | Sales Metal | England |
| 5 | Josephine Higgins | 36 | Wife | Janitress | Holland |
| 6 | William Higgins | 16 | Son | — | Illinois |
| 7 | Corinne Higgins | 11 | Daughter | — | Illinois |
| 8 | Louis Dacher | 63 | Head | Fruits & Grocery | Holland |
| 9 | Catherine Dacher | 55 | Wife | — | Holland |
| 10 | Catherine Dacher | 18 | Daughter | Stenographer | Illinois |
| 11 | Thelma Dacher | 16 | Daughter | — | Indiana |
| 12 | Louis Dacher | 14 | Son | — | Illinois |
| 13 | Melvin Dacher | 33 | Son | Pressman | Illinois |
| 14 | Willy Dacher | 3 | Son-in-law | — | Illinois |
| 15 | George Cook THIS PERSON | 35 | Head | Chauffeur (Delivery) | Illinois |
| 16 | Ann Cook | 30 | Wife | — | Illinois |
| 17 | Florence Cook | 10 | Daughter | — | Illinois |
| 18 | Catherine Cook | 7 | Daughter | — | Illinois |
| 19 | George Cook | 5 | Son | — | Illinois |
| 20 | John Balet | 51 | Head | Bails Paper | Poland |
| 21 | Ann Balet | 49 | Wife | — | Poland |
| 22 | John Balet | 21 | Son | Presser Paper | West Virginia |
| 23 | Andy Balet | 26 | Son | Pin Spotter | West Virginia |
| 24 | Frankie Balet | 24 | Son | Skimmer | West Virginia |
| 25 | Stanley Balet | 21 | Son | Dish Moulder | Illinois |
| 26 | Pauline Balet | 18 | Daughter | Assembler | Illinois |
| 27 | Bruno Balet | 14 | Son | — | Illinois |
| 28 | Agnes Schappach | 63 | Head | — | Germany |
| 29 | Frank Stackiewicz | 29 | Head | Punchpress | Illinois |
| 30 | Antoinette Stackiewicz | 29 | Wife | — | Poland |
| 31 | Rita Stackiewicz | 1 | Daughter | — | Illinois |
| 32 | George Decker | 22 | Head | Chauffeur | Indiana |
| 33 | Dorothy Decker | 22 | Wife | — | Illinois |
| 34 | Robert Decker | 0 | Son | — | Illinois |
| 35 | Joseph Ziedoral | 36 | Head | Patrolman | Illinois |
| 36 | Libye Ziedoral | 30 | Wife | — | Illinois |
| 37 | Joseph Jr. Ziedoral | 13 | Son | — | Illinois |
| 38 | Clarence Wallin | 29 | Head | Bond Clerk | Illinois |
| 39 | Celia Wallin | 32 | Wife | — | Illinois |
| 40 | Genevieve Monick | 23 | Sister-in-law | — | Illinois |
Pedigree Summary
George
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)