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William Lang — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this William Lang across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1862), then head of a 4-person household.
Age 78
b. ~1862
Male
Head
Born: Germany
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Lang |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 78 |
| Marital Status | Married |
| Birthplace | Germany |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1862 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| George Lang | Son | — | 37 | ~1903 |
| William Lang | Head | — | 78 | ~1862 |
| Bertha Lang | Spouse | — | 76 | ~1864 |
| Edna Lang | Daughter | — | 43 | ~1897 |
Census Appearances
1920
Cook, Illinois
Head, age 54
Cook, Illinois · implied b. ~1866 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lang |
| Given Name | William J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Germany |
| Year of Immigration | 1886 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Carpenter |
| Industry | Contractor |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth Country | Germany |
| Year of Naturalization | 1892 |
| Birthplace (normalized) | germany |
1930
Cook, Illinois
Head, age 67
Cook, Illinois · implied b. ~1863 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lang |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 67 |
| Marital Status | Married |
| Birthplace | Germany |
| Naturalization Status | Naturalized |
| Year of Immigration | 1887 |
| Age at First Marriage | 26 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Carpenter |
| Industry | Retail |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | German |
| Home Owned/Rented | O |
| Home Value / Rent | 7000 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
1940
Cook-County, Illinois
Head, age 78
Cook-County, Illinois · implied b. ~1862 — 4 household members
| Surname | Lang |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 78 |
| Marital Status | Married |
| Birthplace | Germany |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
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 Lang across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Lang
Head · 1940 · age 78 · b. ~1862 · Illinois
★ You are viewing this record
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-t0627-00987-00429)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William Sr. Hartmann | 49 | Head | Sheet Metal Worker | Germany |
| 2 | Martha O. Hartmann | 47 | Wife | Seamstress | Germany |
| 3 | William Jr. Hartmann | 8 | Son | — | Illinois |
| 4 | Christ Kremer | 38 | Head | Tailor | Germany |
| 5 | Marie Kremer | 45 | Wife | — | Germany |
| 6 | Aloys Kremer | 10 | Son | — | Illinois |
| 7 | William Kremer | 8 | Son | — | Illinois |
| 8 | William Lang THIS PERSON | 78 | Head | — | Germany |
| 9 | Bertha Lang | 76 | Wife | — | Germany |
| 10 | Edna Lang | 43 | Daughter | — | Illinois |
| 11 | George Lang | 37 | Son | Jeweler | Illinois |
| 12 | Walter Hocker | 31 | Head | Salesman | Illinois |
| 13 | Bernice Hocker | 30 | Wife | — | Illinois |
| 14 | Richard Hocker | 0 | Son | — | Illinois |
| 15 | William Barczim | 33 | Head | Sorter | Illinois |
| 16 | Evelyn Barczim | 33 | Wife | — | Illinois |
| 17 | Duane Barczim | 4 | Son | — | Illinois |
| 18 | John Gardner | 59 | Head | Shoe Worker | Indiana |
| 19 | Grace Gardner | 58 | Wife | — | Illinois |
| 20 | Stanley Gardner | 29 | Son | Clerical | Illinois |
| 21 | Dorothy Gardner | 28 | Daughter | Typist | Illinois |
| 22 | Donald Goldstein | 3 | Lodger | — | Illinois |
| 23 | Joseph Emmert | 33 | Head | Accountant | Illinois |
| 24 | Catherine Emmert | 31 | Wife | — | Illinois |
| 25 | John Emmert | 13 | Son | — | Illinois |
| 26 | Patricia Emmert | 11 | Daughter | — | Illinois |
| 27 | Thomas Emmert | 3 | Son | — | Illinois |
| 28 | Rudolph Yechlin | 40 | Head | Instrument Maker | Illinois |
| 29 | Hannah Yechlin | 37 | Wife | — | Germany |
| 30 | Robert Yechlin | 15 | Son | — | Illinois |
| 31 | Ruth Yechlin | 12 | Daughter | — | Illinois |
| 32 | Roy Yechlin | 12 | Son | — | Illinois |
| 33 | Betty Lou Yechlin | 4 | Daughter | — | Illinois |
| 34 | Christ Lutz | 41 | Head | Candy Maker | Germany |
| 35 | Ella Lutz | 24 | Wife | — | Germany |
| 36 | Erna Lutz | 3 | Daughter | — | Illinois |
| 37 | George Born | 58 | Head | Upholsterer | Illinois |
| 38 | Minnie Born | 61 | Wife | — | Illinois |
| 39 | Pearl Born | 20 | Daughter | Assembler | Illinois |
| 40 | Harry Gattling | 33 | Step-Son | Laborer | 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)