WK
William Klein — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Alexander-County, Illinois
Our Model Tree links this William Klein across the 1930 and 1940 US Censuses in Alexander-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 6-person household.
Age 13
b. ~1927
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Alexander-County, Illinois |
| Surname | Klein |
| Given Name | William R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Cairo City |
| 1935 Residence (County) | Alexander |
| Additional Details | |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Cairo 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Karoline Klein | Daughter | — | 15 | ~1925 |
| John Klein | Son | — | 17 | ~1923 |
| George Klein | Son | — | 20 | ~1920 |
| George Klein | Head | — | 49 | ~1891 |
| William Klein | Son | — | 13 | ~1927 |
| Doris Klein | Spouse | — | 43 | ~1897 |
Census Appearances
1930
Alexander, Illinois
Son, age 3
Alexander, Illinois · implied b. ~1927 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Klein |
| Given Name | William R. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Alexander-County, Illinois
Son, age 13
Alexander-County, Illinois · implied b. ~1927 — 6 household members
| Surname | Klein |
| Given Name | William R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Cairo City |
| 1935 Residence (County) | Alexander |
| 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 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 13 · b. ~1927 · Illinois
★ You are viewing this record
Sibling
George Klein
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Klein
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Karoline Klein
Sibling · 1940 · age 15
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 — Alexander-County, Illinois
Open full size
1940 US Federal Census — Alexander-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00758-00232)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Arthur Somber | 35 | Head | Auditor | Pennsylvania |
| 42 | Bernice Somber | 35 | Wife | — | Arkansas |
| 43 | Phyllis Somber | 14 | Daughter | — | Illinois |
| 44 | Lorrain Somber | 11 | Daughter | — | Illinois |
| 45 | Fred Bird | 38 | Head | — | Ohio |
| 46 | Robert Bird | 14 | Son | — | Illinois |
| 47 | Shirley Bird | 13 | Daughter | — | Illinois |
| 48 | Luther Long | 54 | Head | Foreman | Indiana |
| 49 | Mabel Long | 49 | Wife | — | Illinois |
| 50 | Spring Thelma Long | 28 | Daughter | — | Colorado |
| 51 | John Webb | 28 | Head | — | Kentucky |
| 52 | Louise Webb | 27 | Wife | Helper | Kentucky |
| 53 | J. L. Webb | 8 | Son | — | Illinois |
| 54 | Billy Webb | 5 | Son | — | Illinois |
| 55 | Della Webb | 63 | Mother | — | Kentucky |
| 56 | T. E. Jenkins | 54 | Head | Laborer | Kentucky |
| 57 | Lola Jenkins | 53 | Wife | — | Kentucky |
| 58 | Erbie Jenkins | 22 | Son | Laborer | Kentucky |
| 59 | Mary Jenkins | 19 | Daughter | — | Kentucky |
| 60 | Ray Jenkins | 20 | Son | Laborer | Kentucky |
| 61 | Dorothy Jenkins | 11 | Daughter | — | Illinois |
| 62 | Martin T. Bergeis | 33 | Head | Optometrist | Illinois |
| 63 | Venuma C. Bergeis | 31 | Wife | — | Minnesota |
| 64 | R. E. Sr. Smith | 50 | Head | Mechanical Foreman | Missouri |
| 65 | Mildred Smith | 45 | Wife | — | Arkansas |
| 66 | Ray Smith | 22 | Son | Counter Salesman | Missouri |
| 67 | R. E. Jr. Smith | 25 | Son | Restaurant Manager | Missouri |
| 68 | Carl Rucker | 70 | Head | — | Germany |
| 69 | Pauline Rucker | 66 | Wife | — | Germany |
| 70 | Wardell Greer | 21 | Head | Traveling Salesman | Illinois |
| 71 | Rena Greer | 19 | Wife | — | Kentucky |
| 72 | William Price | 23 | Head | Office Clerk | Illinois |
| 73 | Arthur Thistlewood | 59 | Head | Grain Dealer | Illinois |
| 74 | Cora Thistlewood | 59 | Wife | — | Illinois |
| 75 | George J. Klein | 49 | Head | Stockman | Illinois |
| 76 | Doris Klein | 43 | Wife | — | Illinois |
| 77 | George F. Klein | 20 | Son | Clerk | Illinois |
| 78 | John R. Klein | 17 | Son | — | Illinois |
| 79 | Karoline R. Klein | 15 | Daughter | — | Illinois |
| 80 | William R. Klein THIS PERSON | 13 | 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)