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Thomas Walsh — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Thomas Walsh across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Thomas & Mary — first a son (b.~1906), then head of a 6-person household.
Age 34
b. ~1906
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Walsh |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Engineer |
| Industry | Board of Education |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 2000 |
| Highest Grade | 8 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Engineer |
| Township / Ward | Chicago |
| Est. Birth Year | ~1906 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Walsh | Daughter | — | 38 | ~1902 |
| Ursula Walsh | Daughter | — | 25 | ~1915 |
| Glenna Walsh | Daughter | — | 21 | ~1919 |
| Mary Walsh | Head | — | 65 | ~1875 |
| Anna Dalaiden | Other | — | 55 | ~1885 |
| Thomas Walsh | Son | — | 34 | ~1906 |
Census Appearances
1920
Cook, Illinois
Son, age 12
Cook, Illinois · implied b. ~1908 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Walsh |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| 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 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Walsh |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 34
Cook-County, Illinois · implied b. ~1906 — 6 household members
| Surname | Walsh |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Occupation | Engineer |
| Industry | Board of Education |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 2000 |
| 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 Thomas Walsh across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Thomas Walsh (~0.92 confidence) and mother Mary Walsh (~0.92 confidence) and mother Margaret Walsh (~0.92 confidence) and father Edward Walsh (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thomas Walsh
b. ~1865
Source father
● Household
· direct · ~0.92
Mother
Mary Walsh
b. ~1875
Source mother
● Household
· direct · ~0.92
Mother
Margaret Walsh
b. ~1875
Source mother
● Household
· direct · ~0.92
Father
Edward Walsh
b. ~1877
Source father
● Household
· direct · ~0.92
This person
Anchor record
Thomas Walsh
Son · 1940 · age 34 · b. ~1906 · Illinois
★ You are viewing this record
Sibling
Elizabeth Walsh
Sibling · 1940 · age 38
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Glenna Walsh
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ursula Walsh
Sibling · 1940 · age 25
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-t0627-00944-00639)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Hazel Byrne | 54 | Wife | — | Illinois |
| 42 | Hazel Byrne | 25 | Daughter | Typist | Illinois |
| 43 | Eleanor Byrne | 24 | Daughter | File Clerk | Illinois |
| 44 | James Byrne | 23 | Son | Conductor | Illinois |
| 45 | Mary Byrne | 20 | Daughter | Operator | Illinois |
| 46 | Irene Leamy | 52 | Head | — | Illinois |
| 47 | James Leamy | 23 | Son | Operator | Illinois |
| 48 | Ellen Mitchell | 53 | Head | — | Illinois |
| 49 | Catherine Mitchell | 26 | Daughter | Operator | Illinois |
| 50 | James Mitchell | 18 | Son | — | Illinois |
| 51 | Henry Mitchell | 15 | Son | — | Illinois |
| 52 | Andrew Kachinski | 44 | Head | Butcher | Lithuania |
| 53 | Mary Kachinski | 39 | Wife | Saleslady | Lithuania |
| 54 | Harriet Kachinski | 17 | Daughter | — | Illinois |
| 55 | Louise Kachinski | 16 | Daughter | — | Illinois |
| 56 | Theresa Kachinski | 11 | Daughter | — | Illinois |
| 57 | John Kachinski | 10 | Son | — | Illinois |
| 58 | Louis Samonis | 59 | Head | Burner | Lithuania |
| 59 | Bruno Samonis | 24 | Son | Laborer | Illinois |
| 60 | Stella Samonis | 17 | Daughter | Waitress | Illinois |
| 61 | George Kasmackas | 32 | Lodger | Beef Lugger | Lithuania |
| 62 | Mary Walsh | 65 | Head | — | Mich. State |
| 63 | Elizabeth Walsh | 38 | Daughter | Secretary | Illinois |
| 64 | Thomas Walsh THIS PERSON | 34 | Son | Engineer | Illinois |
| 65 | Ursula Walsh | 25 | Daughter | School Teacher | Illinois |
| 66 | Glenna Walsh | 21 | Daughter | File Clerk | Illinois |
| 67 | Anna Dalaiden | 55 | Servant | Housekeeper | Mich. State |
| 68 | Pauline Lang | 72 | Head | — | Germany |
| 69 | Charles Lang | 52 | Son | Order Clerk | Illinois |
| 70 | Pauline O'Connor | 42 | Granddaughter | New Worker | Illinois |
| 71 | George Lang | 50 | Head | Conductor | Illinois |
| 72 | Loretta Lang | 42 | Wife | — | Illinois |
| 73 | William Carr | 75 | Head | Decorator | New York |
| 74 | Ella Carr | 53 | Wife | — | Pennsylvania |
| 75 | Josephine Bennett | 58 | Head | — | Illinois |
| 76 | Irene Bennett | 33 | Daughter | Inspector | Illinois |
| 77 | Charlotte Bennett | 19 | Daughter | Stenographer | Illinois |
| 78 | Jeremiah Foley | 65 | Head | Watchman | Illinois |
| 79 | Fred Weller | 75 | Head | Watchman | Illinois |
| 80 | Edward Weller | 53 | Son | Laborer | Illinois |
Pedigree Summary
Thomas + 3 siblings
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)