WB
William Bender — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this William Bender across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 11-person household.
Age 13
b. ~1927
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Bender |
| Given Name | William E. Jr. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1927 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Victoria Beck | Spouse | — | 35 | ~1905 |
| Mary Tempe | Other | — | ~1940 | |
| Harry Brodsky | Son | — | 27 | ~1913 |
| Gordon Bower | Other | — | 21 | ~1919 |
| William Bender | Son | — | 13 | ~1927 |
| Katie Halabrin | Other | — | 36 | ~1904 |
| Dorothy Brodsky | Daughter | — | 26 | ~1914 |
| Grace Costello | Daughter | — | 33 | ~1907 |
| Barbara Beck | Daughter | — | 5 | ~1935 |
| Richard Bender | Son | — | 9 | ~1931 |
| Richard Allison | Other | — | ~1940 |
Census Appearances
1930
Cook, Illinois
Son, age 2
Cook, Illinois · implied b. ~1928 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Binder |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 13
Cook-County, Illinois · implied b. ~1927 — 11 household members
| Surname | Bender |
| Given Name | William E. Jr. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Highest Grade | 7 |
| 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 William Bender across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Bender
Son · 1940 · age 13 · b. ~1927 · Illinois
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Sibling
Dorothy Brodsky
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Grace Costello
Sibling · 1940 · age 33
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harry Brodsky
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Bender
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Barbara Beck
Sibling · 1940 · age 5
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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
19 people indexed on this census page (nara:1940:m-t0627-00990-00612)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harry Ab Brodsky | 27 | son | Intern Doctor | Illinois |
| 2 | Dorothy Brodsky | 26 | daughter | Typist | Illinois |
| 3 | William E. Jr. Bender THIS PERSON | 13 | son | — | Illinois |
| 4 | Richard Lee Bender | 9 | son | — | Illinois |
| 5 | Katie Halabrin | 36 | lodger | Hat Maker | Austria |
| 6 | Gordon Bower | 21 | lodger | Loader | Illinois |
| 7 | Richard D. Allison | 0 | lodger | — | Illinois |
| 8 | Mary Ann Tempe | 0 | lodger | — | Illinois |
| 9 | Victoria Beck | 35 | wife | — | Illinois |
| 10 | Barbara Ann Beck | 5 | daughter | — | Illinois |
| 11 | Grace Costello | 33 | daughter | — | Illinois |
| 12 | Richard Sumski | 40 | Head | Binder | Poland |
| 13 | Irene V. Sumski | 31 | wife | — | New York |
| 14 | Donald Sumski | 8 | son | — | Illinois |
| 15 | Minnie Sandberg | 54 | lodger | Typist | Illinois |
| 16 | John Berg | 57 | partner | Painter | Norway |
| 17 | John Witkowski | 47 | partner | Cabinet Maker | Poland |
| 18 | Robert Hann | 15 | son | — | Illinois |
| 19 | Mildred Kroll | 25 | Head | Book Keeper | Michigan |
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)