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William Horn — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this William Horn across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 7-person household.
Age 17
b. ~1923
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Horn |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Highest Grade | Hs 2 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Cicero Town |
| Est. Birth Year | ~1923 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Horn | Son | — | 17 | ~1923 |
| Lillian Horn | Daughter | — | 28 | ~1912 |
| Mildred Horn | Daughter | — | 25 | ~1915 |
| George Horn | Son | — | 20 | ~1920 |
| Anna Horn | Head | — | 57 | ~1883 |
| Emil Horn | Son | — | 24 | ~1916 |
| Edward Horn | Son | — | 24 | ~1916 |
Census Appearances
1930
Cook, Illinois
Son, age 7
Cook, Illinois · implied b. ~1923 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Horn |
| Given Name | Willard B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 17
Cook-County, Illinois · implied b. ~1923 — 7 household members
| Surname | Horn |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Highest Grade | Hs 2 |
| 1935 Residence | Illinois |
| 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 Horn across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Horn
Son · 1940 · age 17 · b. ~1923 · Illinois
★ You are viewing this record
Sibling
Edward Horn
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Emil Horn
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mildred Horn
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Horn
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lillian Horn
Sibling · 1940 · age 28
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
40 people indexed on this census page (nara:1940:m-t0627-00776-00449)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Rose Rohr | 35 | Wife | — | Illinois |
| 42 | Howard Rohr | 9 | Son | — | Illinois |
| 43 | Pauline Mack | 43 | Sister-in-law | Milliner | Illinois |
| 44 | Mary Berger | 41 | Law | Inspector | Illinois |
| 45 | Thomas Pezynski | 48 | Head | Pressman | Illinois |
| 46 | Anastasia Pezynski | 43 | Wife | — | Illinois |
| 47 | Hubert Pezynski | 14 | Son | — | Illinois |
| 48 | James Zejick | 30 | Head | Truck Assembler | Illinois |
| 49 | Ella Zejick | 29 | Wife | — | Illinois |
| 50 | Arlene Zejick | 4 | Daughter | — | Illinois |
| 51 | Joseph Riska | 59 | Head | Painter | Czechoslovakia |
| 52 | Emily Riska | 55 | Wife | — | Czechoslovakia |
| 53 | Joseph Riska | 25 | Son | Electrician | Illinois |
| 54 | Georgiana Riska | 21 | Daughter | Saleslady | Illinois |
| 55 | John Kepner | 55 | Head | Railroad Engineer | Illinois |
| 56 | May Kepner | 39 | Wife | — | Illinois |
| 57 | Ruth Kepner | 13 | Daughter | — | Illinois |
| 58 | Dorothy Kepner | 20 | Daughter | — | Illinois |
| 59 | Joseph Kolar | 51 | Head | Presser | Czechoslovakia |
| 60 | Vlasta Kolar | 47 | Wife | — | Illinois |
| 61 | Virginia Kolar | 24 | Daughter | Typist | Illinois |
| 62 | William Stetenfeld | 33 | Head | Machine Operator | Germany |
| 63 | Retta Stetenfeld | 26 | Wife | — | Illinois |
| 64 | William J. Stetenfeld | 3 | Son | — | Illinois |
| 65 | Diane Stetenfeld | 0 | Daughter | — | Illinois |
| 66 | John Salin | 34 | Head | Type Setter | Illinois |
| 67 | Mildred Salin | 32 | Wife | — | Illinois |
| 68 | Richard Salin | 7 | Son | — | Illinois |
| 69 | Theresa Korner | 49 | Head | — | Czechoslovakia |
| 70 | Edward Korner | 21 | Son | Splicing Helper | Illinois |
| 71 | James Vsetecka | 44 | Head | Grocer | Czechoslovakia |
| 72 | Rose Vsetecka | 43 | Wife | — | Czechoslovakia |
| 73 | Mary Vsetecka | 21 | Daughter | Clerk | Czechoslovakia |
| 74 | Anna Horn | 57 | Head | — | Czechoslovakia |
| 75 | Lillian Horn | 28 | Daughter | — | Illinois |
| 76 | Emil Horn | 24 | Son | Die Maker | Illinois |
| 77 | George Horn | 20 | Son | Office Clerk | Illinois |
| 78 | Edward Horn | 24 | Son | Musician | Illinois |
| 79 | Mildred Horn | 25 | Daughter | — | Illinois |
| 80 | William Horn THIS PERSON | 17 | Son | — | 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)