TM
Thomas Mcdonald — 1930 US Census Record
Model Tree available1930 United States Federal Census · Cook, Illinois
Our Model Tree links this Thomas Mcdonald across the 1920, 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed), with identified parents Matthew & Susan — first a son (b.~1918), then head of a 7-person household.
Age 12
b. ~1918
Male
Son
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | McDonald |
| 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 |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1918 |
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.
7 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| John Mcdonald | Son | — | 10 | ~1920 |
| Thomas Mcdonald | Son | — | 12 | ~1918 |
| Theresa Mcdonald | Daughter | — | 4 | ~1926 |
| Susan Mcdonald | Other | — | 41 | ~1889 |
| Mary Mcdonald | Daughter | — | 6 | ~1924 |
| Matthew Mcdonald | Head | — | 45 | ~1885 |
| Matthew Mcdonald | Son | — | 14 | ~1916 |
Census Appearances
1920
Cook, Illinois
Son, age 2
Cook, Illinois · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonald |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Mother Tongue | Irish |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 12
Cook, Illinois · implied b. ~1918 — 7 household members
| Surname | McDonald |
| 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/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 23
Cook-County, Illinois · implied b. ~1917 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonald |
| Given Name | Tom |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Oak Park |
| 1935 Residence (County) | Cook |
| Occupation | Accountant |
| Industry | Public accountants |
| Class of Worker | PW |
| Hours Worked | 37 |
| Income (1939) | 570 |
| Highest Grade | H 2 |
| 1935 Residence | Illinois |
| 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 Mcdonald across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Matthew Mcdonald (~0.92 confidence) and mother Susan Mcdonald (~0.92 confidence) and mother Mae Mcdonald (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Matthew Mcdonald
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Susan Mcdonald
b. ~1892
Source mother
● Household
· direct · ~0.92
Mother
Mae Mcdonald
b. ~1893
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Mcdonald
Son · 1930 · age 12 · b. ~1918 · Illinois
★ You are viewing this record
Sibling
Theresa Mcdonald
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Matthew Mcdonald
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mcdonald
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Mcdonald
Sibling · 1930 · age 6
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
1930 US Federal Census — Cook, Illinois
Open full size
1930 US Federal Census — Cook, Illinois
Page Contents
50 people indexed on this census page (ia:1930:illinoiscensus00reel459:0083)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Tom Simpson | 53 | Head | Janitor | West Virginia |
| 2 | Eva Rose Simpson | 39 | Wife-H | Clerk | Ohio |
| 3 | Robert Battersby | 35 | Head | Printer | Illinois |
| 4 | Elizabeth Battersby | 37 | Wife-H | — | Illinois |
| 5 | Robert Battersby | 15 | Son | — | Illinois |
| 6 | Ruth Battersby | 13 | Daughter | — | Illinois |
| 7 | Herbert Battersby | 7 | Son | — | Illinois |
| 8 | Eleanor Battersby | 6 | Daughter | — | Illinois |
| 9 | John Battersby | 4 | Son | — | Illinois |
| 10 | Earl Battersby | 3 | Son | — | Illinois |
| 11 | Howard Battersby | 1 | Son | — | Illinois |
| 12 | Michael Augileri | 35 | Head | Laborer | Italy |
| 13 | Victoria Augileri | 33 | Wife-H | — | Italy |
| 14 | Virginia Augileri | 6 | Daughter | — | Illinois |
| 15 | Wallace Barnard | 26 | Head | Painter | Kentucky |
| 16 | Pauline Barnard | 23 | Wife-H | — | Italy |
| 17 | Ruth M. Barnard | 2 | Daughter | — | Illinois |
| 18 | Isabelle Barnard | 0 | Daughter | — | Illinois |
| 19 | Shepard Moon | 51 | Head | Iron Worker | Tennessee |
| 20 | Ella Moon | 60 | Wife-H | — | Tennessee |
| 21 | Jennie D. Wilks | 15 | Niece | — | Tennessee |
| 22 | Lucinda Mcclure | 52 | Head | Starcher | Tennessee |
| 23 | Alotha Johnson | 24 | Daughter | Waitress | Tennessee |
| 24 | Laverta Johnson | 9 | Gd Child | — | Illinois |
| 25 | Robert Johnson | 7 | Gd Child | — | Illinois |
| 26 | William Knowls | 60 | Roomer | Coal Carrier | Tennessee |
| 27 | David Ragley | 25 | Roomer | Laborer | Louisiana |
| 28 | Frank Richardson | 23 | Head | Foreman | Missouri |
| 29 | Florence Richardson | 20 | Wife-H | — | Missouri |
| 30 | Clarence Richardson | 2 | Son | — | Illinois |
| 31 | Charles Ilsery | 13 | Bro-in-law | — | Missouri |
| 32 | John Bobinski | 28 | Roomer | Millwright | Poland |
| 33 | Matthew Mcdonald | 45 | Head | City Fireman | Ireland |
| 34 | Susan Mcdonald | 41 | Wife-H | — | Ireland |
| 35 | Matthew Mcdonald | 14 | Son | — | Illinois |
| 36 | Thomas Mcdonald THIS PERSON | 12 | Son | — | Illinois |
| 37 | John Mcdonald | 10 | Son | — | Illinois |
| 38 | Mary Rita Mcdonald | 6 | Daughter | — | Illinois |
| 39 | Theresa Mcdonald | 4 | Daughter | — | Illinois |
| 40 | Mary Harvey | 50 | Head | — | Ireland |
| 41 | Joseph B. Davidson | 28 | Cousin | Laborer | Ireland |
| 42 | Nicholas Passaro | 56 | Head | Painter | Italy |
| 43 | Gilda Passaro | 31 | Wife-H | — | Italy |
| 44 | Paul Passaro | 23 | Son | Butcher | Pennsylvania |
| 45 | Philip Passaro | 21 | Son | Laborer | Pennsylvania |
| 46 | Louise Passaro | 18 | Daughter | Saleslady | Pennsylvania |
| 47 | Larina Passaro | 15 | Daughter | — | Pennsylvania |
| 48 | Natilie Passaro | 14 | Son | — | Pennsylvania |
| 49 | Jeanette Passaro | 14 | Daughter | — | New York |
| 50 | Florence Passaro | 12 | Daughter | — | Illinois |
Pedigree Summary
Thomas + 4 siblings
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 1930 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)