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John Schaefer — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this John Schaefer across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1930), then head of a 9-person household.
Age 10
b. ~1930
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Schaefer |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Cicero Town |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | 5 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Cicero Town |
| Est. Birth Year | ~1930 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Schaefer | Spouse | — | 50 | ~1890 |
| Dorothy Schaefer | Daughter | — | 13 | ~1927 |
| Mary Schaefer | Daughter | — | 10 | ~1930 |
| William Schaefer | Head | — | 50 | ~1890 |
| Arthur Schaefer | Son | — | 25 | ~1915 |
| John Schaefer | Son | — | 10 | ~1930 |
| Madeline Schaefer | Daughter | — | 23 | ~1917 |
| Margaret Schaefer | Daughter | — | 20 | ~1920 |
| Elizabeth Schaefer | Daughter | — | 15 | ~1925 |
Census Appearances
1930
Cook, Illinois
Son, age
Cook, Illinois · implied b. ~1930 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schafer |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 10
Cook-County, Illinois · implied b. ~1930 — 9 household members
| Surname | Schaefer |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Cicero Town |
| 1935 Residence (County) | Cook |
| Income (1939) | 0 |
| Highest Grade | 5 |
| 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 John Schaefer across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Schaefer
Son · 1940 · age 10 · b. ~1930 · Illinois
★ You are viewing this record
Sibling
Mary Schaefer
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Schaefer
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Madeline Schaefer
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Schaefer
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arthur Schaefer
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Schaefer
Sibling · 1940 · age 20
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-t0627-00776-00726)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harold Styblo | 41 | Head | Band Master | Illinois |
| 2 | Lucille Styblo | 41 | Wife | Operator | Illinois |
| 3 | Phyllis Styblo | 5 | Daughter | — | Illinois |
| 4 | Elmer Schultz | 45 | Head | Bill Clerk | Illinois |
| 5 | Doris Schultz | 44 | Wife | — | Illinois |
| 6 | Blanche Smith | 59 | Head | — | Illinois |
| 7 | Lee Mcfarland | 25 | Son | Inspector | Illinois |
| 8 | Michael Tikes | 40 | Head | Cook | Greece |
| 9 | Elizabeth Tikes | 49 | Wife | — | Illinois |
| 10 | Miles Brousil | 26 | Head | Field Advisor | Illinois |
| 11 | Emily Brousil | 27 | Wife | Packer | Illinois |
| 12 | Stephen Vish | 31 | Head | Machinist | Illinois |
| 13 | Julia Vish | 28 | Wife | — | Illinois |
| 14 | Yvonne Vish | 3 | Daughter | — | Illinois |
| 15 | Juanita Vish | 1 | Daughter | — | Illinois |
| 16 | George Van Galder | 48 | Head | Band Saw Operator | Illinois |
| 17 | Helen Van Galder | 49 | Wife | — | Illinois |
| 18 | Pearl Van Galder | 20 | Daughter | — | Illinois |
| 19 | George Weaver | 36 | Head | Proprietor | Illinois |
| 20 | Caroline Weaver | 31 | Wife | — | Illinois |
| 21 | Robert Weaver | 3 | Son | — | Illinois |
| 22 | Edward Bestvina | 34 | Head | Traffic Manager | Illinois |
| 23 | Catherine Bestvina | 33 | Wife | — | Ohio |
| 24 | Carol Bestvina | 2 | Son | — | Illinois |
| 25 | Angelo Sareffs | 32 | Head | Laborer | Illinois |
| 26 | Rose Sareffs | 30 | Wife | Cashier | Illinois |
| 27 | Otto Benson | 75 | Head | — | Norway |
| 28 | Frieda Westerman | 43 | Daughter | — | Illinois |
| 29 | Robert Westerman | 19 | Grandson | Delivery | Illinois |
| 30 | William Schaefer | 50 | Head | Payroll Clerk | Illinois |
| 31 | Elizabeth Schaefer | 50 | Wife | — | Illinois |
| 32 | Arthur Schaefer | 25 | Son | Teacher | Illinois |
| 33 | Madeline Schaefer | 23 | Daughter | Librarian | Illinois |
| 34 | Margaret Schaefer | 20 | Daughter | — | Illinois |
| 35 | Elizabeth Schaefer | 15 | Daughter | — | Illinois |
| 36 | Dorothy Schaefer | 13 | Daughter | — | Illinois |
| 37 | Mary Ann Schaefer | 10 | Daughter | — | Illinois |
| 38 | John Schaefer THIS PERSON | 10 | Son | — | Illinois |
| 39 | John Sanders | 65 | Head | Building Contractor | Sweden |
| 40 | Viola Sanders | 35 | Daughter | Proprietor | Sweden |
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)