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William Schaefer — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this William Schaefer across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1884), then head of a 3-person household.
Age 56
b. ~1884
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Schaefer |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Butcher |
| Industry | Retail Butcher |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1820 |
| Highest Grade | 8 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Butcher |
| Township / Ward | Chicago |
| Est. Birth Year | ~1884 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Evelyn Schaefer | Daughter | — | 23 | ~1917 |
| William Schaefer | Head | — | 56 | ~1884 |
| Lottie Schaefer | Spouse | — | 50 | ~1890 |
Census Appearances
1920
Cook, Illinois
Head, age 36
Cook, Illinois · implied b. ~1884 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schaefer |
| Given Name | William |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Foreman |
| Industry | Stock yards |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Home Owned/Rented | R |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Head, age 46
Cook, Illinois · implied b. ~1884 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schaefer |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 25 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Butcher |
| Industry | Meat Products |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 7,500 |
| Radio Set | R |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Head, age 56
Cook-County, Illinois · implied b. ~1884 — 3 household members
| Surname | Schaefer |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Occupation | Butcher |
| Industry | Retail Butcher |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1820 |
| Highest Grade | 8 |
| 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 Schaefer across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
William Schaefer
Head · 1940 · age 56 · b. ~1884 · 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-t0627-00951-00842)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Bertha Provocke | 63 | Wife | — | Czechoslovakia |
| 42 | Marie Veychidel | 32 | Daughter | — | Illinois |
| 43 | Michael Veychidel | 27 | Son | Pipe Fitter | Illinois |
| 44 | William Schaefer THIS PERSON | 56 | Head | Butcher | Illinois |
| 45 | Lottie Schaefer | 50 | Wife | — | Illinois |
| 46 | Evelyn Schaefer | 23 | Daughter | Order Clerk | Illinois |
| 47 | Nellie Fisher | 68 | Head | — | English Canada |
| 48 | Thomas Oliver | 39 | Nephew | Parole Officer | Louisiana |
| 49 | Anna Chiller | 53 | Head | Music Woman | New York |
| 50 | Mary Chiller | 35 | Daughter | Teacher | Illinois |
| 51 | Louis Jakubowski | 53 | Head | Butcher | Poland |
| 52 | Katherine Jakubowski | 53 | Wife | — | Poland |
| 53 | Gertrude Jakubowski | 29 | Daughter | Typist | Illinois |
| 54 | Stella Jakubowski | 26 | Daughter | — | Illinois |
| 55 | Andrew Redlin | 81 | Head | — | Poland |
| 56 | Bertha Redlin | 76 | Wife | — | Poland |
| 57 | Edward Heidorn | 62 | Head | Photo Engraver | Illinois |
| 58 | Lenore A. Heidorn | 29 | Daughter | Supervisor | Illinois |
| 59 | Doris Heidorn | 26 | Daughter | — | Illinois |
| 60 | Dr. Lester Heidorn | 32 | Son | Dentist | Illinois |
| 61 | Lillian Heidorn | 30 | Daughter-in-law | — | Wisconsin |
| 62 | Richard Heidorn | 3 | Grandson | — | Illinois |
| 63 | Thomas O'Keefe | 49 | Head | Conductor | Illinois |
| 64 | Mae O'Keefe | 50 | Wife | — | Illinois |
| 65 | James Gorman | 42 | Brother-in-law | Policeman | Illinois |
| 66 | Marion Sykora | 14 | Niece | — | Illinois |
| 67 | John W. Halm | 35 | Head | Civil Engineer | Illinois |
| 68 | Ellen Halm | 35 | Wife | — | Texas |
| 69 | Jack Halm | 10 | Son | — | Michigan |
| 70 | Mary Ellen Halm | 6 | Daughter | — | Illinois |
| 71 | Patricia Halm | 0 | Son | — | Illinois |
| 72 | Vincent Kane | 46 | Head | Salesman | Illinois |
| 73 | Mary Kane | 40 | Wife | — | Illinois |
| 74 | Vincent Kane | 17 | Son | — | Illinois |
| 75 | Jeanne Kane | 16 | Daughter | — | Illinois |
| 76 | Therese Kane | 6 | Daughter | — | Illinois |
| 77 | Bruno Bona | 47 | Head | Dentist | Illinois |
| 78 | Martha Bona | 45 | Wife | — | Illinois |
| 79 | Robert Paul Bona | 19 | Son | — | Illinois |
| 80 | Anita Surey | 34 | Sister-in-law | — | 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)