HB
Helen Brooks — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mercer-County, Illinois
Our Model Tree links this Helen Brooks across the 1920, 1930 and 1940 US Censuses in Mercer-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1897), then head of a 6-person household.
Age 43
b. ~1897
Female
Spouse
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Mercer-County, Illinois |
| Surname | Brooks |
| Given Name | Helen S. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Rivoli Township |
| 1935 Residence (County) | Mercer |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Rivoli Township |
| Est. Birth Year | ~1897 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Helen | Age | Birth yr |
|---|---|---|---|---|
| Lester Brooks | Son | — | 18 | ~1922 |
| Dean Brooks | Son | — | 15 | ~1925 |
| Helen Brooks | Daughter | — | 13 | ~1927 |
| Ernest Brooks | Son | — | 21 | ~1919 |
| Helen Brooks | Spouse | — | 43 | ~1897 |
| Ernest Brooks | Head | — | 44 | ~1896 |
Census Appearances
1920
Mercer, Illinois
Spouse, age 23
Mercer, Illinois · implied b. ~1897 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brooks |
| Given Name | Helen |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Indiana |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Mercer, Illinois
Other, age 32
Mercer, Illinois · implied b. ~1898 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brooks |
| Given Name | Helen |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 19 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Indiana |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Mercer-County, Illinois
Spouse, age 43
Mercer-County, Illinois · implied b. ~1897 — 6 household members
| Surname | Brooks |
| Given Name | Helen S. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Rivoli Township |
| 1935 Residence (County) | Mercer |
| Income (1939) | 0 |
| 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 Helen 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
Helen Brooks
Spouse · 1940 · age 43 · b. ~1897 · Illinois
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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 — Mercer-County, Illinois
Open full size
1940 US Federal Census — Mercer-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00858-00525)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Donald L. Crawford | 32 | Head | Farmer | Illinois |
| 2 | Ruth M. Crawford | 32 | Wife | — | Illinois |
| 3 | Lois I. Crawford | 11 | Daughter | — | Illinois |
| 4 | Ethelyn Crawford | 8 | Daughter | — | Illinois |
| 5 | Norma C. Crawford | 3 | Daughter | — | Illinois |
| 6 | David W. Rathbun | 67 | Father in law | Farmer | Illinois |
| 7 | J. Emil Johnson | 46 | Head | Farmer | Sweden |
| 8 | Grace W. Johnson | 46 | Wife | — | Illinois |
| 9 | Lilith E. Johnson | 17 | Daughter | — | Illinois |
| 10 | Ernest M. Brooks | 44 | Head | Farmer | Illinois |
| 11 | Helen S. Brooks THIS PERSON | 43 | Wife | — | Illinois |
| 12 | Ernest M. Brooks | 21 | Son | Farmer | Illinois |
| 13 | Lester I. (A.) Brooks | 18 | Son | — | Illinois |
| 14 | Dean L. Brooks | 15 | Son | — | Illinois |
| 15 | Helen L. Brooks | 13 | Daughter | — | Illinois |
| 16 | Clifford L. Shull | 27 | Head | Farmer | Illinois |
| 17 | Dorothy L. Shull | 20 | Wife | — | Illinois |
| 18 | Wayne E. Shull | 1 | Son | — | Illinois |
| 19 | Sharon J. Shull | 0 | Daughter | — | Illinois |
| 20 | Raymond Carlson | 25 | Head | Farmer | Illinois |
| 21 | Dorothy Carlson | 23 | Wife | — | Illinois |
| 22 | Verna Mae Carlson | 1 | Daughter | — | Illinois |
| 23 | J. William Brooks | 48 | Head | Farmer | Illinois |
| 24 | Agnes Q. Brooks | 50 | Wife | — | Illinois |
| 25 | Wayne G. Brooks | 26 | Son | Farm Laborer | Illinois |
| 26 | Curtis Young | 25 | Head | Farmer | Illinois |
| 27 | Delia E. Young | 26 | Wife | — | Illinois |
| 28 | Donald R. Young | 1 | Son | — | Illinois |
| 29 | Helen U. Young | 20 | Sister | — | Illinois |
| 30 | Swan J. Young | 66 | Father | — | Sweden |
| 31 | Charles A. Frichtenicht | 46 | Head | Stock Tester | Illinois |
| 32 | Hazel Frichtenicht | 40 | Wife | — | Illinois |
| 33 | Dean Frichtenicht | 10 | Son | — | Illinois |
| 34 | Clair Brown | 34 | Head | Grinder Plow Shares | Illinois |
| 35 | Catherine D. Brown | 27 | Wife | — | Illinois |
| 36 | Shirley Brown | 7 | Daughter | — | Illinois |
| 37 | Patricia Brown | 6 | Daughter | — | Illinois |
| 38 | Eula Brown | 5 | Daughter | — | Illinois |
| 39 | Thomas Brown | 3 | Son | — | Illinois |
| 40 | Dixie Brown | 2 | Daughter | — | 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)