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Thomas Brown — 1940 US Census Record
Model Tree available1940 United States Federal Census · Champaign-County, Illinois
Our Model Tree links this Thomas Brown across the 1910, 1920, 1930 and 1940 US Censuses in Champaign-County, Illinois (XGBoost, ~Confirmed), with identified parents John & John — first a head (b.~1910), then head of a 4-person household.
Age 30
b. ~1910
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Champaign-County, Illinois |
| Surname | Brown |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Crittenden Twp |
| 1935 Residence (County) | Champaign |
| Additional Details | |
| Occupation | Labor |
| Industry | Trucking |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 700 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Labor |
| Township / Ward | Crittenden Twp |
| Est. Birth Year | ~1910 |
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 |
|---|---|---|---|---|
| Thomas Brown | Head | — | 30 | ~1910 |
| Mark Brown | Son | — | 7 | ~1933 |
| John Brown | Son | — | 2 | ~1938 |
| Luella Brown | Spouse | — | 28 | ~1912 |
Census Appearances
1910
Champaign, Illinois
Son, age
Champaign, Illinois · implied b. ~1910 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Champaign, Illinois
Son, age 9
Champaign, Illinois · implied b. ~1911 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Champaign, Illinois
Son, age 19
Champaign, Illinois · implied b. ~1911 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Thomas H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Champaign-County, Illinois
Head, age 30
Champaign-County, Illinois · implied b. ~1910 — 4 household members
| Surname | Brown |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Crittenden Twp |
| 1935 Residence (County) | Champaign |
| Occupation | Labor |
| Industry | Trucking |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 700 |
| Highest Grade | Hs 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 Brown across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Brown (~0.92 confidence) and father John Brown (~0.92 confidence) and father John Brown (~0.92 confidence) and mother Mary Brown (~0.92 confidence) and mother Mary Brown (~0.92 confidence) and mother Mary Brown (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Brown
b. ~1885
Source father
● Household
· direct · ~0.92
Father
John Brown
b. ~1885
Source father
● Household
· direct · ~0.92
Father
John Brown
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Mary Brown
b. ~1888
Source mother
● Household
· direct · ~0.92
Mother
Mary Brown
b. ~1888
Source mother
● Household
· direct · ~0.92
Mother
Mary Brown
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Brown
Head · 1940 · age 30 · b. ~1910 · 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 — Champaign-County, Illinois
Open full size
1940 US Federal Census — Champaign-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00765-00833)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Darlene Jenkins | 3 | Daughter | — | Illinois |
| 2 | Henry Mckeen | 46 | Head | Farmer | Illinois |
| 3 | Mary Mckeen | 44 | Wife | — | Illinois |
| 4 | Mary M. Mckeen | 13 | Daughter | — | Illinois |
| 5 | Paula J. Mckeen | 10 | Daughter | — | Illinois |
| 6 | Catherine A. Mckeen | 6 | Daughter | — | Illinois |
| 7 | Sam B. Elder | 48 | Head | Farmer | Kentucky |
| 8 | Rose Elder | 38 | Wife | — | Kentucky |
| 9 | Robert E. Elder | 20 | Son | Labor | Illinois |
| 10 | June Elder | 11 | Daughter | — | Illinois |
| 11 | George Elder | 8 | Son | — | Illinois |
| 12 | Myron Elder | 5 | Son | — | Illinois |
| 13 | Maurice D. Sandwell | 28 | Head | Farmer | Illinois |
| 14 | Rita Sandwell | 24 | Wife | — | Illinois |
| 15 | Thaddeus Sandwell | 3 | Son | — | Illinois |
| 16 | Harry Linden | 13 | Brother | — | Illinois |
| 17 | Alvin Kapper | 28 | Head | Farmer | Illinois |
| 18 | John Kapper | 25 | Brother | Labor | Illinois |
| 19 | Rosalie Kapper | 22 | Sister | — | Illinois |
| 20 | Ella Kapper | 21 | Sister | — | Illinois |
| 21 | Philip Kapper | 19 | Brother | Labor | Illinois |
| 22 | Joseph Kapper | 15 | Brother | — | Illinois |
| 23 | Elmer Kapper | 13 | Brother | — | Illinois |
| 24 | Elaine Kapper | 10 | Sister | — | Illinois |
| 25 | Patrick Berrigan | 79 | Head | Farmer | Illinois |
| 26 | Cheryl L'Heureux | 42 | Head | Farmer | Illinois |
| 27 | Lillian L'Heureux | 42 | Wife | — | Illinois |
| 28 | Oliver Hulbert | 67 | Head | Farmer | Illinois |
| 29 | Della Hulbert | 65 | Sister | — | Illinois |
| 30 | Theodore Minton | 18 | Nephew | — | Illinois |
| 31 | Russell A. Bricker | 41 | Hired Hand | Labor | Illinois |
| 32 | Nellie Bricker | 43 | Wife | — | Mississippi |
| 33 | Milton Trowbridge | 32 | Head | Labor | Indiana |
| 34 | Ellen Trowbridge | 42 | Wife | — | Illinois |
| 35 | Joan Trowbridge | 10 | Daughter | — | Illinois |
| 36 | Thomas Brown THIS PERSON | 30 | Head | Labor | Illinois |
| 37 | Luella Brown | 28 | Wife | — | Illinois |
| 38 | Mark Brown | 7 | Son | — | Illinois |
| 39 | John Brown | 2 | Son | — | Illinois |
| 40 | John D. Duncan | 39 | Head | Labor | Indiana |
Pedigree Summary
Thomas
Gen 1 · 6 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)