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William Klein — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this William Klein across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 8-person household.
Age 11
b. ~1929
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Klein |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Cicero Town |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | 6 |
| 1935 Residence | Same Place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Cicero Town |
| Est. Birth Year | ~1929 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Minnie Klein | Head | — | 48 | ~1892 |
| Lucille Klein | Daughter | — | 19 | ~1921 |
| Jeanette Klein | Son | — | 12 | ~1928 |
| Theresa Klein | Daughter | — | 22 | ~1918 |
| John Klein | Son | — | 15 | ~1925 |
| Henry Klein | Son | — | 18 | ~1922 |
| Kate Fischer | Other | — | 76 | ~1864 |
| William Klein | Son | — | 11 | ~1929 |
Census Appearances
1930
Cook, Illinois
Son, age 1
Cook, Illinois · implied b. ~1929 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kleine |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| 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 11
Cook-County, Illinois · implied b. ~1929 — 8 household members
| Surname | Klein |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Cicero Town |
| 1935 Residence (County) | Cook |
| Income (1939) | 0 |
| Highest Grade | 6 |
| 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 Klein across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Klein
Son · 1940 · age 11 · b. ~1929 · Illinois
★ You are viewing this record
Sibling
Lucille Klein
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jeanette Klein
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Klein
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Theresa Klein
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Henry Klein
Sibling · 1940 · age 18
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-t0627-00776-00120)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Frank Paul | 63 | Head | — | Italy |
| 2 | Theresa Paul | 59 | Wife | — | Illinois |
| 3 | Kate Paul | 40 | Daughter | — | Illinois |
| 4 | Louis Paul | 36 | Son | Musician | Illinois |
| 5 | Anna Paul | 33 | Daughter | — | Illinois |
| 6 | Minnie Paul | 31 | Daughter | — | Illinois |
| 7 | William Dombrow | 64 | Head | Painter | Illinois |
| 8 | Mary Dombrow | 61 | Wife | — | Scotland |
| 9 | Charles Dombrow | 20 | Son | General Office Clerk | Illinois |
| 10 | Hubert Hohe | 68 | Head | Janitor | Bavaria |
| 11 | Mary Hohe | 61 | Wife | — | Yugoslavia |
| 12 | Henry Hohe | 18 | Son | — | Illinois |
| 13 | Pauline Kromer | 60 | Head | — | Germany |
| 14 | Neil Waymen | 32 | Lodger | Plater | Wisconsin |
| 15 | Harry Cheape | 32 | Lodger | Plater | Illinois |
| 16 | Joseph Kromer | 34 | Head | Machine Operator | Germany |
| 17 | Margaret Kromer | 30 | Wife | — | Wisconsin |
| 18 | Dolores Kromer | 9 | Daughter | — | Illinois |
| 19 | Joan Kromer | 5 | Daughter | — | Illinois |
| 20 | Lois Kromer | 5 | Daughter | — | Illinois |
| 21 | Carlo Sarno | 55 | Head | Inspector | Italy |
| 22 | Josephine Sarno | 55 | Wife | — | Italy |
| 23 | Ralph Sarno | 29 | Son | Messenger | Illinois |
| 24 | Phyllis Sarno | 17 | Daughter | — | Illinois |
| 25 | Edith Sarno | 16 | Daughter | — | Illinois |
| 26 | Gloria Sarno | 15 | Daughter | — | Illinois |
| 27 | Julia Sarno | 12 | Daughter | — | Illinois |
| 28 | Jeannette Weltzer | 39 | Head | — | Illinois |
| 29 | John Weltzer | 14 | Son | — | Illinois |
| 30 | Donald Weltzer | 11 | Son | — | Illinois |
| 31 | Lois Weltzer | 5 | Daughter | — | Illinois |
| 32 | Minnie Klein | 48 | Head | — | Illinois |
| 33 | Theresa Klein | 22 | Daughter | Teletype Operator | Illinois |
| 34 | Lucille Klein | 19 | Daughter | Office Clerk | Illinois |
| 35 | Henry Klein | 18 | Son | Messenger | Illinois |
| 36 | John Klein | 15 | Son | — | Illinois |
| 37 | Jeanette Klein | 12 | Son | — | Illinois |
| 38 | William Klein THIS PERSON | 11 | Son | — | Illinois |
| 39 | Kate Fischer | 76 | Mother | — | Netherlands |
| 40 | George Radik | 36 | Head | Proprietor Bar-Tender | 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)