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William Dillon — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this William Dillon across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1926), then head of a 7-person household.
Age 14
b. ~1926
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Dillon |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Berwyn City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Berwyn City |
| Est. Birth Year | ~1926 |
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 |
|---|---|---|---|---|
| Alma Dillon | Spouse | — | 39 | ~1901 |
| David Dillon | Son | — | 2 | ~1938 |
| Dolores Dillon | Daughter | — | 6 | ~1934 |
| Dale Dillon | Son | — | ~1940 | |
| Harry Dillon | Head | — | 40 | ~1900 |
| Eugene Dillon | Son | — | 9 | ~1931 |
| William Dillon | Son | — | 14 | ~1926 |
Census Appearances
1930
Cook, Illinois
Son, age 4
Cook, Illinois · implied b. ~1926 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dillan |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Yugoslavia |
| Mother's Birthplace | Yugoslavia |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 14
Cook-County, Illinois · implied b. ~1926 — 7 household members
| Surname | Dillon |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Berwyn City |
| 1935 Residence (County) | Cook |
| Income (1939) | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same house |
| 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 Dillon across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Dillon
Son · 1940 · age 14 · b. ~1926 · Illinois
★ You are viewing this record
Sibling
Dolores Dillon
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dale Dillon
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David Dillon
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eugene Dillon
Sibling · 1940 · age 9
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-t0627-00772-00313)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Larry | 1 | Son | — | Illinois |
| 42 | Charles Page | 32 | Head | School Principal | Illinois |
| 43 | Dorothy Page | 32 | Wife | — | Illinois |
| 44 | Charles Jr. Page | 9 | Son | — | Illinois |
| 45 | Sandra Page | 4 | Daughter | — | Illinois |
| 46 | Charles Vanecha | 29 | Head | Sheet Metal Worker | Michigan |
| 47 | Rose Vanecha | 28 | Wife | — | Illinois |
| 48 | Douglas Vanecha | 2 | Son | — | Illinois |
| 49 | Kay Vanecha | 0 | Daughter | — | Illinois |
| 50 | Julian Klapoll | 41 | Head | Checker | Illinois |
| 51 | Mae Klapoll | 40 | Wife | — | Illinois |
| 52 | Albert Klapoll | 16 | Son | — | Illinois |
| 53 | Frank Klapoll | 13 | Son | — | Illinois |
| 54 | Charles Klapoll | 7 | Son | — | Illinois |
| 55 | Joseph Panyek | 40 | Head | Barber | Czechoslovakia |
| 56 | Bessie Panyek | 39 | Wife | — | Russia |
| 57 | Joseph Jr. Panyek | 16 | Son | — | Czechoslovakia |
| 58 | Eugene Panyek | 9 | Son | — | Illinois |
| 59 | Harry Dillon | 40 | Head | Inspector | Indiana |
| 60 | Alma Dillon | 39 | Wife | — | Illinois |
| 61 | William Dillon THIS PERSON | 14 | Son | — | Illinois |
| 62 | Eugene Dillon | 9 | Son | — | Illinois |
| 63 | Dolores Dillon | 6 | Daughter | — | Illinois |
| 64 | David Dillon | 2 | Son | — | Illinois |
| 65 | Dale Dillon | 0 | Son | — | Illinois |
| 66 | William Mallem | 40 | Head | Chauffeur | Illinois |
| 67 | Cordelia Mallem | 38 | Wife | — | Illinois |
| 68 | Florence Mallem | 19 | Daughter | — | Illinois |
| 69 | Virginia Mallem | 13 | Daughter | — | Illinois |
| 70 | Victor Hagl | 52 | Head | Cylinder Draftsman | Illinois |
| 71 | Dora Hagl | 43 | Wife | — | Illinois |
| 72 | Harry M. Kennedy | 46 | Head | Yard Foreman | Illinois |
| 73 | Arleen Kennedy | 43 | Wife | — | Minnesota |
| 74 | Mary E. Kennedy | 18 | Daughter | — | Illinois |
| 75 | Alice Jane Kennedy | 15 | Daughter | — | Illinois |
| 76 | George Ann Kennedy | 13 | Son | — | Illinois |
| 77 | John M. Kennedy | 8 | Son | — | Illinois |
| 78 | Frank Hoffreiter | 36 | Head | Auto Repairman | Czechoslovakia |
| 79 | Emily Hoffreiter | 31 | Wife | — | Illinois |
| 80 | Gene Hoffreiter | 10 | 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)