HB
Helen Brooks — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Grundy-County, Illinois
Our Model Tree links this Helen Brooks across the 1930 and 1940 US Censuses in Grundy-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1921), then head of a 12-person household.
Age 19
b. ~1921
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Grundy-County, Illinois |
| Surname | Brooks |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (County) | Grundy |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | 8 |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Morris City |
| Est. Birth Year | ~1921 |
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.
12 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Helen | Age | Birth yr |
|---|---|---|---|---|
| Bernard Brooks | Son | — | 17 | ~1923 |
| Helen Brooks | Daughter | — | 19 | ~1921 |
| Robert Brooks | Son | — | 12 | ~1928 |
| Norma Brooks | Daughter | — | 6 | ~1934 |
| Beverly Brooks | Daughter | — | 11 | ~1929 |
| Anna Brooks | Spouse | — | 45 | ~1895 |
| Betty Brooks | Daughter | — | 10 | ~1930 |
| Richard Brooks | Son | — | 4 | ~1936 |
| Charles Brooks | Son | — | 14 | ~1926 |
| Fred Brooks | Head | — | 45 | ~1895 |
| Raymond Brooks | Son | — | 11 | ~1929 |
| Charlene Brooks | Daughter | — | 14 | ~1926 |
Census Appearances
1930
Grundy, Illinois
Daughter, age 9
Grundy, Illinois · implied b. ~1921 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brooks |
| Given Name | Helen E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Grundy-County, Illinois
Daughter, age 19
Grundy-County, Illinois · implied b. ~1921 — 12 household members
| Surname | Brooks |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (County) | Grundy |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 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 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Helen Brooks
Daughter · 1940 · age 19 · b. ~1921 · Illinois
★ You are viewing this record
Sibling
Charlene Brooks
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Brooks
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Beverly Brooks
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Brooks
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Brooks
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Norma Brooks
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernard Brooks
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Brooks
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Brooks
Sibling · 1940 · age 14
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 — Grundy-County, Illinois
Open full size
1940 US Federal Census — Grundy-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00809-00358)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Carson Robinson | 2 | Son | — | Illinois |
| 42 | Audrey Peterson | 21 | Maid | Housework | Illinois |
| 43 | Andrew Anderson | 36 | Head | — | Illinois |
| 44 | - This Line Void - | None | — | — | — |
| 45 | George D. La Rette | 38 | Head | Powder Plant | Illinois |
| 46 | Luciel La Rette | 36 | Wife | Law Office | Illinois |
| 47 | Henry F. Cragg | 43 | Head | Garage | Illinois |
| 48 | Ina Cragg | 41 | Wife | — | Indiana |
| 49 | Lucille Cragg | 13 | Daughter | — | Illinois |
| 50 | Martin Berger | 51 | Head | Paper Carton Co | Roumania |
| 51 | Theresa Berger | 39 | Wife | — | Roumania |
| 52 | Martin Jr. Berger | 14 | Son | — | Illinois |
| 53 | Betty Berger | 13 | Daughter | — | Illinois |
| 54 | Joseph Berger | 10 | Son | — | Illinois |
| 55 | Anna B. Wilson | 64 | Head | — | Indiana |
| 56 | Louise Wilson | 41 | Daughter | Paper Mill | Indiana |
| 57 | Runte Gunderson | 84 | Head | — | Norway |
| 58 | Inga Gunderson | 80 | Wife | — | Norway |
| 59 | Arthur Hanson | 38 | Son | Vending Machine Co | Illinois |
| 60 | Elizabeth Redmond | 76 | Head | — | Illinois |
| 61 | Nat Redmond | 51 | Son | Paper Mill | Illinois |
| 62 | Thorwald Hanson | 56 | Head | Paper Mill | Denmark |
| 63 | Rosella Hanson | 19 | Daughter | Law Office | Illinois |
| 64 | Thomas Hanson | 16 | Son | — | Illinois |
| 65 | Melvin W. Hauge | 36 | Head | Gas Station | Illinois |
| 66 | Martha Hauge | 37 | Wife | Paper Mill | Illinois |
| 67 | Fred Brooks | 45 | Head | Filling Station | Illinois |
| 68 | Anna Brooks | 45 | Wife | — | Illinois |
| 69 | Helen Brooks THIS PERSON | 19 | Daughter | — | Illinois |
| 70 | Bernard Brooks | 17 | Son | Hauling Coal | Illinois |
| 71 | Charles Brooks | 14 | Son | — | Illinois |
| 72 | Charlene Brooks | 14 | Daughter | — | Illinois |
| 73 | Robert Brooks | 12 | Son | — | Illinois |
| 74 | Raymond Brooks | 11 | Son | — | Illinois |
| 75 | Beverly Brooks | 11 | Daughter | — | Illinois |
| 76 | Betty Ann Brooks | 10 | Daughter | — | Illinois |
| 77 | Norma June Brooks | 6 | Daughter | — | Illinois |
| 78 | Richard Brooks | 4 | Son | — | Illinois |
| 79 | Ernest Gatty | 44 | Head | Manager | Illinois |
| 80 | Minnie Gatty | 42 | Wife | — | Wisconsin |
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)