WC
Walter Cook — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Walter Cook across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents George & May — first a head (b.~1911), then head of a 4-person household.
Age 29
b. ~1911
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Cook |
| Given Name | Walter |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | sewer machine |
| Industry | charity industry |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 490 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Sewer Machine |
| Township / Ward | Chicago |
| Est. Birth Year | ~1911 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Walter | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Cook | Daughter | — | 5 | ~1935 |
| Eileen Cook | Daughter | — | 1 | ~1939 |
| Walter Cook | Head | — | 29 | ~1911 |
| Anna Cook | Spouse | — | 25 | ~1915 |
Census Appearances
1920
Cook, Illinois
Son, age 9
Cook, Illinois · implied b. ~1911 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Walter |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read | Yes |
| Can Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 19
Cook, Illinois · implied b. ~1911 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Walter |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | Operator |
| Industry | Iron Mfg Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Head, age 29
Cook-County, Illinois · implied b. ~1911 — 4 household members
| Surname | Cook |
| Given Name | Walter |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Occupation | sewer machine |
| Industry | charity industry |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 490 |
| Highest Grade | H 2 |
| 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 Walter Cook across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father George Cook (~0.92 confidence) and mother May Cook (~0.92 confidence) and father George Cook (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
George Cook
b. ~1869
Source father
● Household
· direct · ~0.92
Mother
May Cook
b. ~1879
Source mother
● Household
· direct · ~0.92
Father
George Cook
b. ~1885
Source father
● Household
· direct · ~0.92
This person
Anchor record
Walter Cook
Head · 1940 · age 29 · b. ~1911 · 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-t0627-00993-00769)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charlotte Kudzinowski | 11 | Daughter | Order Filler | Illinois |
| 2 | Esther Kudzinowski | 11 | Daughter | — | Illinois |
| 3 | Magdalen Kudzinowski | 75 | Mother | — | Poland |
| 4 | Stanley Rmiatko | Rniatko | 46 | Head | Tailor | Poland |
| 5 | Bernice Rmiatko | Rniatko | 47 | Wife | Sewing Operator | Poland |
| 6 | Joseph Rmiatko | Rniatko | 21 | Son | Shipping Clerk | Illinois |
| 7 | Joseph Ragozyk | 49 | Head | Cabinet Maker | Poland |
| 8 | Anna Ragozyk | 46 | Wife | — | Poland |
| 9 | Robert Glanz | 24 | Son-in-law | Sprayer | Illinois |
| 10 | Genevieve Glanz | 24 | Daughter | — | Illinois |
| 11 | Walter Cook THIS PERSON | 29 | Head | Sewer Machine | Illinois |
| 12 | Anna Cook | 25 | Wife | — | Illinois |
| 13 | Elizabeth Cook | 5 | Daughter | — | Illinois |
| 14 | Eileen Cook | 1 | Daughter | — | Illinois |
| 15 | Casimier Wilczynski | 30 | Head | Pressman | Illinois |
| 16 | Mary Wilczynski | 23 | Wife | — | Illinois |
| 17 | Raymond Wilczynski | 1 | Son | — | Illinois |
| 18 | John Stanczak | 45 | Head | Pressman | Poland |
| 19 | Anna Stanczak | 43 | Wife | — | Poland |
| 20 | Marion Stanczak | 20 | Daughter | Match Maker | Illinois |
| 21 | John Jr. Stanczak | 7 | Son | — | Illinois |
| 22 | Harry Domigian | 47 | Head | Rug Cleaner | Turkey |
| 23 | Elizabeth Domigian | 37 | Wife | — | Turkey |
| 24 | Arum Domigian | 16 | Daughter | — | Illinois |
| 25 | Georgette Domigian | 4 | Daughter | — | Illinois |
| 26 | Varak Domigian | 57 | Head | Radio Maintenance | Turkey |
| 27 | Don Domigian | 18 | Son | Radio Maintenance | Illinois |
| 28 | Narty Domigian | 17 | Son | — | Illinois |
| 29 | Regina Domigian | 14 | Daughter | — | Illinois |
| 30 | Joseph Jr. Murko | 25 | Head | Meat Salesman | Illinois |
| 31 | Ann Murko | 22 | Wife | — | Illinois |
| 32 | Joseph M Iii Murko | 0 | Son | — | Illinois |
| 33 | Carl Mascol | 58 | Head | Carpenter | Russia |
| 34 | Sena Mascol | 43 | Wife | Janitress | Latvia |
| 35 | Lillian Spank | 12 | Niece | — | Illinois |
| 36 | Carl Podkalne | 52 | Head | Cabinet Maker | Latvia |
| 37 | Elizabeth Podkalne | 48 | Wife | — | Latvia |
| 38 | Carmen Podkalne | 17 | Daughter | — | Illinois |
| 39 | Ends Here | None | BLOCK | — | NUMBER |
| 40 | Frank Ramallo | 22 | Head | Truck Maintenance | Illinois |
Pedigree Summary
Walter
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)