HB
Helen Brooks — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Helen Brooks across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1897), then head of a 4-person household.
Age 43
b. ~1897
Female
Head
Born: Poland
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Brooks |
| Given Name | Helen |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Widowed |
| Birthplace | Poland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | OA |
| Hours Worked | 44 |
| Income (1939) | 520 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
| Occupation | Farmer |
| Township / Ward | Chicago |
| 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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Helen | Age | Birth yr |
|---|---|---|---|---|
| Raymond Brooks | Son | — | 17 | ~1923 |
| Richard Brooks | Son | — | 19 | ~1921 |
| Helen Brooks | Head | — | 43 | ~1897 |
| Helen Brooks | Daughter | — | 13 | ~1927 |
Census Appearances
1920
Cook, Illinois
Spouse, age 26
Cook, Illinois · implied b. ~1894 — 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 | 26 |
| Marital Status | Married |
| Birthplace | Poland |
| Year of Immigration | 1911 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Polish |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
1930
Cook, Illinois
Spouse, age 34
Cook, Illinois · implied b. ~1896 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brooks |
| Given Name | Helen |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Poland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1911 |
| Age at First Marriage | 22 |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Can Read/Write | Yes |
| Mother Tongue | Polish |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
1940
Cook-County, Illinois
Head, age 43
Cook-County, Illinois · implied b. ~1897 — 4 household members
| Surname | Brooks |
| Given Name | Helen |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Widowed |
| Birthplace | Poland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | OA |
| Hours Worked | 44 |
| Income (1939) | 520 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
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
Head · 1940 · age 43 · b. ~1897 · 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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01004-00140)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Helen Brooks THIS PERSON | 43 | Head | Farmer | Poland |
| 2 | Richard F. Brooks | 19 | Son | Laborer Mixer | Illinois |
| 3 | Raymond S. Brooks | 17 | Son | Laborer | Illinois |
| 4 | Helen M. Brooks | 13 | Daughter | — | Illinois |
| 5 | Louis Mollinelli | 61 | Head | Farmer | Italy |
| 6 | Angela Mollinelli | 53 | Wife | — | Italy |
| 7 | Evelyn D. Mollinelli | 31 | Daughter | Saleslady | Illinois |
| 8 | Louis Jr. Mollinelli | 29 | Son | Laborer | Illinois |
| 9 | Ralph A. Mollinelli | 27 | Son | Laborer | Illinois |
| 10 | Catherine C. Mollinelli | 23 | Daughter | — | Illinois |
| 11 | John F. Mollinelli | 20 | Son | — | Illinois |
| 12 | Margaret M. Mollinelli | 18 | Daughter | — | Illinois |
| 13 | George L. Mollinelli | 16 | Son | — | Illinois |
| 14 | William H. Harris | 67 | Head | Farmer | Illinois |
| 15 | Albert E. Harris | 65 | Brother | Farmer | Illinois |
| 16 | Defaut Voltaire | 36 | Head | Musician | Arkansas |
| 17 | La Verne Voltaire | 32 | Wife | Operator | Illinois |
| 18 | Carrie Hanson | 69 | Housekeeper | Housekeeper | Iowa |
| 19 | George Keiler | 20 | Kennel Manager | Kennel Manager | Illinois |
| 20 | Edwin V. Harris | 37 | Head | Painter | Illinois |
| 21 | Ruby F. Harris | 30 | Wife | — | Canada-English |
| 22 | Edwin V. Jr. Harris | 8 | Son | — | Illinois |
| 23 | Harold B. Harris | 33 | Head | Painter | Illinois |
| 24 | Jeannette Harris | 30 | Wife | — | New Jersey |
| 25 | Harold B. Jr. Harris | 4 | Son | — | Illinois |
| 26 | Angus Mullen | 72 | Father-in-law | — | Canada-English |
| 27 | Laura Harris | 50 | Head | Bookkeeper | Illinois |
| 28 | Edward Balfour | 54 | Head | Greenhouse | Wisconsin |
| 29 | Anna Balfour | 53 | Wife | — | Illinois |
| 30 | Dorothy A. Balfour | 22 | Daughter | — | Illinois |
| 31 | Fred F. Sperling | 42 | Head | Salesman | Illinois |
| 32 | Meta B. Sperling | 40 | Wife | — | Wisconsin |
| 33 | Fred J. Sperling | 17 | Son | Messenger Boy | Illinois |
| 34 | Lawrence Sperling | 16 | Son | — | Illinois |
| 35 | Robert C. Sperling | 14 | Son | — | Illinois |
| 36 | Richard E. Sperling | 9 | Son | — | Illinois |
| 37 | Mark A. Sorenson | 32 | Head | City Salesman | Wisconsin |
| 38 | Adelyne S. Sorenson | 32 | Wife | — | Missouri |
| 39 | Doris J. Sorenson | 8 | Daughter | — | Illinois |
| 40 | Merle W. Sorenson | 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)