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John Brooks — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Marion-County, Indiana
Our Model Tree links this John Brooks across the 1920, 1930 and 1940 US Censuses in Marion-County, Indiana (XGBoost, ~Confirmed) — first a head (b.~1898), then head of a 8-person household.
Age 42
b. ~1898
Male
Head
Born: Indiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Indiana |
| Surname | Brooks |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Pike Township |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 72 |
| Income (1939) | 452 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Farmer |
| Township / Ward | Pike Township |
| Est. Birth Year | ~1898 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Alice Brooks | Daughter | — | 8 | ~1932 |
| Ellen Brooks | Daughter | — | 7 | ~1933 |
| Doris Brooks | Daughter | — | 14 | ~1926 |
| Thelma Brooks | Daughter | — | 11 | ~1929 |
| John Brooks | Head | — | 42 | ~1898 |
| Harold Brooks | Son | — | 17 | ~1923 |
| Allen Brooks | Son | — | 13 | ~1927 |
| Rachel Brooks | Spouse | — | 39 | ~1901 |
Census Appearances
1920
Marion, Indiana
Other, age 22
Marion, Indiana · implied b. ~1898 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brooks |
| Given Name | John O. |
| Relationship to Head | Boarder |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Kansas |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Marion, Indiana
Head, age 32
Marion, Indiana · implied b. ~1898 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brooks |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Indiana |
| Age at First Marriage | 23 |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Radio Set | R |
| Veteran | No |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Marion-County, Indiana
Head, age 42
Marion-County, Indiana · implied b. ~1898 — 8 household members
| Surname | Brooks |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Pike Township |
| 1935 Residence (County) | Marion |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 72 |
| Income (1939) | 452 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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.
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This person
Anchor record
John Brooks
Head · 1940 · age 42 · b. ~1898 · Indiana
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Marion-County, Indiana
Open full size
1940 US Federal Census — Marion-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01076-00050)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Oma Ann Reed | 9 | daughter | — | Indiana |
| 42 | Jay Jean Reed | 7 | daughter | — | Indiana |
| 43 | Lula Myers | 33 | Head | — | Indiana |
| 44 | William R. Conarroe | 73 | Head | — | Indiana |
| 45 | Rose E. Conarroe | 73 | Wife | — | Indiana |
| 46 | Asa Conarroe | 46 | Head | Farmer | Indiana |
| 47 | Gladys Conarroe | 45 | Wife | — | Indiana |
| 48 | Clyde Young | 21 | son-in-law | Caretaker | Indiana |
| 49 | Ruth Young | 20 | daughter | Stenographer | Indiana |
| 50 | John Brooks THIS PERSON | 42 | Head | Farmer | Indiana |
| 51 | Rachel Brooks | 39 | Wife | — | Indiana |
| 52 | Harold Brooks | 17 | son | — | Indiana |
| 53 | Doris Brooks | 14 | daughter | — | Indiana |
| 54 | Allen Brooks | 13 | son | — | Indiana |
| 55 | Thelma Brooks | 11 | daughter | — | Indiana |
| 56 | Alice Brooks | 8 | daughter | — | Indiana |
| 57 | Ellen Brooks | 7 | daughter | — | Indiana |
| 58 | John L. Cummings | 50 | Head | Superintendent | Pennsylvania |
| 59 | Mary M. Cummings | 47 | Wife | — | Pennsylvania |
| 60 | Kenneth Tate | 23 | Head | Manager | Indiana |
| 61 | Merle Tate | 22 | Wife | — | Indiana |
| 62 | Howard Ii Lacy | 34 | Head | Executive | Kentucky |
| 63 | Edna B. Lacy | 32 | Wife | — | Indiana |
| 64 | Margit Lacy | 5 | daughter | — | Indiana |
| 65 | Howard Iii Lacy | 2 | son | — | Indiana |
| 66 | Andre Lacy | 0 | son | — | Indiana |
| 67 | Nathan Bohanna | 35 | Caretaker | Caretaker | Mississippi |
| 68 | Bertha Bohanna | 25 | Maid | Maid | Alabama |
| 69 | Russell J. Ryan | 49 | Head | Judge | Indiana |
| 70 | Katherine Ryan | 44 | Wife | — | Indiana |
| 71 | Russell J. Jr. Ryan | 21 | son | — | Indiana |
| 72 | John L. Ryan | 18 | son | — | Indiana |
| 73 | Samuel H. Dowden | 63 | Head | Attorney | Indiana |
| 74 | Louise C. Dowden | 62 | Wife | — | Ohio |
| 75 | Jepha Perkins | 30 | Butler | Butler | Kentucky |
| 76 | Henry Boese | 34 | Head | Caretaker | Germany |
| 77 | George T. Bender | 30 | Head | Clerk | Indiana |
| 78 | Mary Bender | 30 | Wife | — | Indiana |
| 79 | Patty Bender | 9 | daughter | — | Indiana |
| 80 | A. L. Wagg | 60 | Head | Research | Illinois |
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)