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William Case — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Cook-County, Illinois

Our Model Tree links this William Case across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 9-person household.

Age 17 b. ~1923 Male Son Born: Illinois Single

1940 Census Record Details

Census Year1940
LocationCook-County, Illinois
SurnameCase
Given NameWilliam
Relationship to HeadSon
SexM
Color / RaceWhite
Age17
Marital StatusSingle
BirthplaceIllinois
1935 Residence (City)Chicago
1935 Residence (County)Cook
Additional Details
Industry0
Highest GradeHs 3
1935 ResidenceSame place
Birth StateIllinois
Birth CountryUnited States
Birthplace (normalized)illinois
Township / WardChicago
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.

9 people recorded at the same address in the 1940 census.

Name Relation to head Relative to William Age Birth yr
William Case Son — 17 ~1923
Marilynn Case Daughter — 6 ~1934
Anna Case Spouse — 46 ~1894
Mary Case Daughter — 13 ~1927
William Case Head — 46 ~1894
Anna Case Daughter — 15 ~1925
George Case Son — 11 ~1929
Harriet Case Daughter — 18 ~1922
Alice Case Daughter — 16 ~1924

Census Appearances

1930
Cook, Illinois
Son, age 5
Cook, Illinois · implied b. ~1925 — 4 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Case
Given Name William
Relationship to Head Son
Sex M
Color / Race White
Age 5
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 17
Cook-County, Illinois · implied b. ~1923 — 9 household members
Surname Case
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
Industry 0
Highest Grade Hs 3
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.
Linked across censuses
Our Model Tree links William Case across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Case
Son · 1940 · age 17 · b. ~1923 · Illinois
★ You are viewing this record
Sibling
Anna Case
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Case
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Case
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Case
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harriet Case
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marilynn Case
Sibling · 1940 · age 6
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

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-00979-00656)

Line Name Age Relation Occupation Birthplace
41 David Schlacht 65 Head Salesman Russia
42 David Nathans 37 Son-in-law Salesman Illinois
43 Minnie Nathans 35 Daughter — Illinois
44 George Nathans 15 Grandson — Illinois
45 Margaret Driscoll 46 Maid Housemaid Irish Free State
46 Alex Zweig 52 Head Proprietor Austria
47 Bella Zweig 52 Wife — Austria
48 Charles Zweig 29 Son Proprietor Illinois
49 Ann Zweig 25 Daughter Cashier Illinois
50 Mitchell Zweig 23 Son — Illinois
51 Arthur Zweig 32 Son Proprietor Austria
52 Ida Zweig 32 Daughter-in-law — New York
53 Herbert Zweig 12 Grandson — Illinois
54 Marcia Zweig 8 Granddaughter — Illinois
55 Tillie Johnson 32 Maid Maid Virginia
56 Thomas Bolger 24 Head Inspector Illinois
57 Helen Bolger 23 Wife — Illinois
58 Thomas Bolger 3 Son — Illinois
59 William Case 46 Head Proprietor Illinois
60 Anna Case 46 Wife — Iowa
61 Harriet Case 18 Daughter — Illinois
62 William Case THIS PERSON 17 Son — Illinois
63 Alice Case 16 Daughter — Illinois
64 Anna Case 15 Daughter — Illinois
65 Mary Ellen Case 13 Daughter — Illinois
66 George Case 11 Son — Illinois
67 Marilynn Case 6 Daughter — Illinois
68 Fred S. Silbert 35 Head Salesman Russia
69 Minnie Silbert 34 Wife Substitute Teacher New York
70 Bernard Silbert 2 Son — Illinois
71 Phyllis Zelesky 18 Maid Housemaid Illinois
72 Harriet Kellett 60 Head — Illinois
73 Le Roy Smith 34 Lodger Proprietor Illinois
74 Arthur Smith 65 Lodger Elevator Oper. Illinois
75 Muriel Jones 27 Lodger Biller Illinois
76 Harry Rodney 53 Head Laborer New York
77 May Rodney 55 Sister Beauty Operator New York
78 Jack Dickhoff 38 Head Salesman Russia
79 Dolly Dickhoff 34 Wife — Illinois
80 Constance Soltz 18 Daughter — Illinois

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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)

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