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John Brooks — 1940 US Census Record
Model Tree available1940 United States Federal Census · Hamilton-County, Illinois
Our Model Tree links this John Brooks across the 1920, 1930 and 1940 US Censuses in Hamilton-County, Illinois (XGBoost, ~Confirmed), with identified parents Agnes & Charlie — first a son (b.~1913), then head of a 5-person household.
Age 27
b. ~1913
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hamilton-County, Illinois |
| Surname | Brooks |
| Given Name | John W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Flannigan Township |
| 1935 Residence (County) | Hamilton |
| Additional Details | |
| Occupation | Laborer |
| Industry | Road Construction |
| Class of Worker | PW |
| Hours Worked | 2 |
| Income (1939) | 500 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Laborer |
| Township / Ward | Flannigan Township |
| Est. Birth Year | ~1913 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Iva Brooks | Daughter | — | 19 | ~1921 |
| Agnes Brooks | Head | — | 55 | ~1885 |
| Bennie Brooks | Son | — | 17 | ~1923 |
| John Brooks | Son | — | 27 | ~1913 |
| Carl Brooks | Son | — | 15 | ~1925 |
Census Appearances
1920
Hamilton, Illinois
Son, age 7
Hamilton, Illinois · implied b. ~1913 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brooks |
| Given Name | John W |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Hamilton, Illinois
Son, age 17
Hamilton, Illinois · implied b. ~1913 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brooks |
| Given Name | John W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Hamilton-County, Illinois
Son, age 27
Hamilton-County, Illinois · implied b. ~1913 — 5 household members
| Surname | Brooks |
| Given Name | John W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Flannigan Township |
| 1935 Residence (County) | Hamilton |
| Occupation | Laborer |
| Industry | Road Construction |
| Class of Worker | PW |
| Hours Worked | 2 |
| Income (1939) | 500 |
| Highest Grade | No 6 |
| 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 John Brooks across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Agnes Brooks (~0.92 confidence) and father Charlie Brooks (~0.92 confidence) and father Charles Brooks (~0.92 confidence) and mother Agnes Brooks (~0.92 confidence) and mother Lona Brooks (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Agnes Brooks
b. ~1885
Source mother
● Household
· direct · ~0.92
Father
Charlie Brooks
b. ~1886
Source father
● Household
· direct · ~0.92
Father
Charles Brooks
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Agnes Brooks
b. ~1889
Source mother
● Household
· direct · ~0.92
Mother
Lona Brooks
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Brooks
Son · 1940 · age 27 · b. ~1913 · Illinois
★ You are viewing this record
Sibling
Bennie Brooks
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Iva Brooks
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carl Brooks
Sibling · 1940 · age 15
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 — Hamilton-County, Illinois
Open full size
1940 US Federal Census — Hamilton-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00809-00687)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Sarah J Smith | 24 | Wife | — | Illinois |
| 2 | Mary Bell Smith | 0 | Daughter | — | Illinois |
| 3 | John Smith | 62 | Head | Farmer | Illinois |
| 4 | Florida Smith | 60 | Wife | — | Illinois |
| 5 | Duain Smith | 25 | Son | Farmer | Illinois |
| 6 | Harrison Ritchason | 20 | Head | Laborer | Illinois |
| 7 | Bessie Ritchason | 17 | Wife | — | Illinois |
| 8 | W. W. Brockett | 33 | Head | Laborer | Illinois |
| 9 | Helen Brockett | 30 | Wife | — | Illinois |
| 10 | Billy Brockett | 11 | Son | — | Illinois |
| 11 | Vada Mae Brockett | 8 | Daughter | — | Illinois |
| 12 | Daisy Dee Brockett | 3 | Daughter | — | Illinois |
| 13 | Robert Varner | 59 | Head | Farmer | Illinois |
| 14 | Edna Warner Varner | 50 | Wife | — | Illinois |
| 15 | Hannah Warner | 56 | Sister | — | Illinois |
| 16 | Fred Mailand | 48 | Head | Farmer | Missouri |
| 17 | Maude Mailand | 42 | Wife | — | Illinois |
| 18 | Agnes Brooks | 55 | Head | — | Illinois |
| 19 | John W. Brooks THIS PERSON | 27 | Son | Laborer | Illinois |
| 20 | Iva Brooks | 19 | Daughter | — | Illinois |
| 21 | Bennie Brooks | 17 | Son | Laborer | Illinois |
| 22 | Carl Brooks | 15 | Son | — | Illinois |
| 23 | James Mcintosh | 47 | Head | Farmer | Kentucky |
| 24 | Effie Mcintosh | 45 | Wife | — | Illinois |
| 25 | Howard Mcintosh | 19 | Son | General Truck Worker | Illinois |
| 26 | H. O. Broden | 47 | Head | Laborer | Illinois |
| 27 | Pauline Broden | 45 | Wife | — | Illinois |
| 28 | Don Broden | 11 | Son | — | Illinois |
| 29 | Joan Broden | 8 | Daughter | — | Illinois |
| 30 | Madison Johnson | 53 | Head | Laborer | Illinois |
| 31 | Bettie Johnson | 50 | Wife | — | Illinois |
| 32 | Shirley Johnson | 1 | Daughter | — | Illinois |
| 33 | W. A. Hunt | 83 | Father-in-law | — | Illinois |
| 34 | T. I. Lockard | 61 | Head | Farmer | Illinois |
| 35 | Daisy Lockard | 59 | Wife | — | Illinois |
| 36 | Eugene Johnson | 25 | Head | Laborer | Illinois |
| 37 | Bennie Johnson | 25 | Wife | — | Illinois |
| 38 | Jerry Gene Johnson | 5 | Son | — | Illinois |
| 39 | Paul Glen Johnson | 2 | Son | — | Illinois |
| 40 | Ulen Brockett | 28 | Head | Laborer | Illinois |
Pedigree Summary
John + 3 siblings
Gen 1 · 5 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)