TD
Thomas Doyle — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Thomas Doyle across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents A & Annie — first a son (b.~1915), then head of a 4-person household.
Age 25
b. ~1915
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Doyle |
| Given Name | Thomas J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | River Forest Village |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Civil Engineer |
| Industry | Railway Construction |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 2100 |
| Highest Grade | C-4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Civil Engineer |
| Township / Ward | River Forest Village |
| Est. Birth Year | ~1915 |
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 Thomas | Age | Birth yr |
|---|---|---|---|---|
| Mary Doyle | Daughter | — | 22 | ~1918 |
| Thomas Doyle | Son | — | 25 | ~1915 |
| Agnes Doyle | Spouse | — | 52 | ~1888 |
| A Doyle | Head | — | 57 | ~1883 |
Census Appearances
1920
Cook, Illinois
Son, age 4
Cook, Illinois · implied b. ~1916 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Doyle |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 14
Cook, Illinois · implied b. ~1916 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Doyle |
| Given Name | Thomas J. |
| 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/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 25
Cook-County, Illinois · implied b. ~1915 — 4 household members
| Surname | Doyle |
| Given Name | Thomas J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | River Forest Village |
| 1935 Residence (County) | Cook |
| Occupation | Civil Engineer |
| Industry | Railway Construction |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 2100 |
| Highest Grade | C-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 Thomas Doyle across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father A Doyle (~0.92 confidence) and mother Annie Doyle (~0.92 confidence) and mother Agnes Doyle (~0.92 confidence) and father Patrick Doyle (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
A Doyle
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Annie Doyle
b. ~1886
Source mother
● Household
· direct · ~0.92
Mother
Agnes Doyle
b. ~1888
Source mother
● Household
· direct · ~0.92
Father
Patrick Doyle
b. ~1888
Source father
● Household
· direct · ~0.92
This person
Anchor record
Thomas Doyle
Son · 1940 · age 25 · b. ~1915 · Illinois
★ You are viewing this record
Sibling
Mary Doyle
Sibling · 1940 · age 22
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
38 people indexed on this census page (nara:1940:m-t0627-00788-00518)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Howard Young | 59 | Head | Machinist | New York |
| 2 | Edith O Young | 56 | Wife | — | Germany |
| 3 | Edward L Wright | 74 | Head | — | Illinois |
| 4 | Rose Wright | 70 | Wife | — | Wisconsin |
| 5 | Doris Wright | 42 | Daughter | Teacher | Illinois |
| 6 | Miriam Wright | 37 | Daughter | Teacher | Illinois |
| 7 | Roy O Benson | 44 | Son in law | Salesclerk | Illinois |
| 8 | Blanche Benson | 40 | Daughter | — | Illinois |
| 9 | Mary Patricia Benson | 9 | Granddaughter | — | Illinois |
| 10 | John Edward Benson | 5 | Grandson | — | Illinois |
| 11 | Rose Mary Newman | 22 | Granddaughter | Secretary - Typist | Iowa |
| 12 | A. J. Doyle | 57 | Head | Salesman | Illinois |
| 13 | Agnes Doyle | 52 | Wife | — | Illinois |
| 14 | Thomas J Doyle THIS PERSON | 25 | Son | Civil Engineer | Illinois |
| 15 | Mary Doyle | 22 | Daughter | Navy Worker | Illinois |
| 16 | John Thomas Hansen | 62 | Head | Salesman | Denmark |
| 17 | Jean Mcdonald Hansen | 56 | Wife | — | Canada-English |
| 18 | H. R. Wimmersberger | 37 | Head | Manager | Pennsylvania |
| 19 | Helen M Wimmersberger | 34 | Wife | — | Pennsylvania |
| 20 | H. Lois Wimmersberger | 13 | Daughter | — | Pennsylvania |
| 22 | George O'Donnell | 56 | Head | Adjuster | Illinois |
| 23 | Ida O'Donnell | 54 | Wife | — | Illinois |
| 24 | Rose Mary O'Donnell | 18 | Daughter | — | Illinois |
| 25 | John O'Donnell | 16 | Son | — | Illinois |
| 26 | Lawrence O'Donnell | 12 | Son | — | Illinois |
| 27 | Francis X Amato | 33 | Head | Salesman | Illinois |
| 28 | Catherine Amato | 30 | Wife | — | Illinois |
| 29 | Francis Jr Amato | 5 | Son | — | Illinois |
| 30 | Suzanne Amato | 3 | Daughter | — | Illinois |
| 31 | Richard Joseph Amato | 0 | Son | — | Illinois |
| 32 | Roy Foster Fix | 50 | Head | Justice Of Peace | Michigan |
| 33 | Mildred Fix | 44 | Wife | Organist | Illinois |
| 34 | Genevieve Fix | 20 | Daughter | — | Illinois |
| 35 | Franklin L Fix | 19 | Son | — | Illinois |
| 36 | Rosemary Fix | 16 | Daughter | — | Illinois |
| 37 | Charles Lane Fix | 11 | Son | — | Illinois |
| 38 | Alice M Lane | 71 | Mother in law | — | Argentina |
| 40 | Charles A Capek | 40 | Head | Assistant Treasurer | Czecho-Slovakia |
Pedigree Summary
Thomas + 1 sibling
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)