TM
Thomas Mcdonough — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Thomas Mcdonough across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Matthew & Josephine — first a son (b.~1914), then head of a 4-person household.
Age 26
b. ~1914
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | McDonough |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | City of Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Plaster Laborer |
| Industry | Repair Contractor |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 300 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Plaster Laborer |
| Township / Ward | City Of Chicago |
| Est. Birth Year | ~1914 |
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 |
|---|---|---|---|---|
| Josephine Mcdonough | Spouse | — | 61 | ~1879 |
| Matthew Mcdonough | Head | — | 68 | ~1872 |
| Thomas Mcdonough | Son | — | 26 | ~1914 |
| Virginia Mcdonough | Daughter | — | 25 | ~1915 |
Census Appearances
1920
Cook, Illinois
Son, age 6
Cook, Illinois · implied b. ~1914 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonough |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read | No |
| Can Write | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 16
Cook, Illinois · implied b. ~1914 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonough |
| Given Name | Thomas E |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 26
Cook-County, Illinois · implied b. ~1914 — 4 household members
| Surname | McDonough |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | City of Chicago |
| 1935 Residence (County) | Cook |
| Occupation | Plaster Laborer |
| Industry | Repair Contractor |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 300 |
| Highest Grade | No 8 |
| 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 Mcdonough across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Matthew Mcdonough (~0.92 confidence) and mother Josephine Mcdonough (~0.92 confidence) and mother Josephine Mcdonough (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Matthew Mcdonough
b. ~1872
Source father
● Household
· direct · ~0.92
Mother
Josephine Mcdonough
b. ~1879
Source mother
● Household
· direct · ~0.92
Mother
Josephine Mcdonough
b. ~1879
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Mcdonough
Son · 1940 · age 26 · b. ~1914 · Illinois
★ You are viewing this record
Sibling
Virginia Mcdonough
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-t0627-00990-00452)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Gerald Mckinley | 6 | Grandson | — | Illinois |
| 2 | Ben Quick | 50 | Head | Salesman | Illinois |
| 3 | Theresa D Quick | 51 | Wife | — | Illinois |
| 4 | Raymond Quick | 18 | Son | Messenger | Illinois |
| 5 | Roy H Winkelman | 45 | Head | Coal Merchant | Illinois |
| 6 | Agatha Winkelman | 46 | Wife | — | Illinois |
| 7 | Joann A Winkelman | 9 | Daughter | — | Illinois |
| 8 | Richard Parkes | 55 | Head | Machinist | Germany |
| 9 | Ole Brigard | 38 | Head | Freight Handler | Norway |
| 10 | Randi Brigard | 34 | Wife | — | Norway |
| 11 | Robert Brigard | 7 | Son | — | Illinois |
| 12 | Hannah Knudsen | 57 | Head | — | Norway |
| 13 | Lillian Knudsen | 26 | Daughter | Costumer | Illinois |
| 14 | Marshall Knudsen | 23 | Son | New Worker | Illinois |
| 15 | Mildred Knudsen | 22 | Daughter | Beautician | Illinois |
| 16 | Alan Knudsen | 18 | Son | Furniture Layer | Illinois |
| 17 | Clifford Knudsen | 15 | Son | — | Illinois |
| 18 | Matthew Mcdonough | 68 | Head | — | Illinois |
| 19 | Josephine Mcdonough | 61 | Wife | — | Illinois |
| 20 | Thomas Mcdonough THIS PERSON | 26 | Son | Plaster Laborer | Illinois |
| 21 | Virginia Mcdonough | 25 | Daughter | Com. Operator | Illinois |
| 22 | Henry Schacht | 73 | Head | — | Germany |
| 23 | Bertha Schacht | 69 | Wife | — | Illinois |
| 24 | Anthony Mure | 32 | Head | Brick Layer | Italy |
| 25 | June A Mure | 28 | Wife | — | Iowa |
| 26 | Anthony R Mure | 5 | Son | — | Illinois |
| 27 | John J Mure | 0 | Son | — | Illinois |
| 28 | Chester Jordon | 48 | Head | Production | Illinois |
| 29 | Edna Jordon | 45 | Wife | — | Illinois |
| 30 | Frank Trity | 69 | Head | Assembler | Germany |
| 31 | Minnie Trity | 53 | Wife | — | Illinois |
| 32 | Emil Quensing | 57 | Head | Piano Tuner | Illinois |
| 33 | Tillis Quensing | 52 | Wife | — | Illinois |
| 34 | Edward Quensing | 26 | Son | Traveling Salesman | Illinois |
| 35 | Elda Quensing | 18 | Daughter | Sales Clerk | Illinois |
| 36 | Joseph Boehm | 61 | Head | Caretaker | Bohemia |
| 37 | Rose Boehm | 60 | Wife | — | Illinois |
| 38 | Lawrence Swager | 39 | Stepson | Electro Typer | Illinois |
| 39 | Amelia Swager | 37 | Step-daughter | — | Missouri |
| 40 | Robert Swager | 12 | Step-grandson | — | Illinois |
Pedigree Summary
Thomas + 1 sibling
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)