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William Schaefer — 1940 US Census Record
Linked across censuses1940 United States Federal Census · St.-Clair-County, Illinois
Our Model Tree links this William Schaefer across the 1930 and 1940 US Censuses in St.-Clair-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1897), then head of a 7-person household.
Age 43
b. ~1897
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Clair-County, Illinois |
| Surname | Schaefer |
| Given Name | William H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Prairie Du Long |
| 1935 Residence (County) | St. Clair |
| Additional Details | |
| Occupation | farming |
| Industry | farmer |
| Class of Worker | OA |
| Hours Worked | 72 |
| Income (1939) | 950 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Farming |
| Township / Ward | Prairie Du Long |
| Est. Birth Year | ~1897 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Juanita Schaefer | Daughter | — | 7 | ~1933 |
| Rose Schaefer | Daughter | — | 5 | ~1935 |
| Rita Schaefer | Daughter | — | 3 | ~1937 |
| Walter Schaefer | Son | — | 9 | ~1931 |
| William Schaefer | Head | — | 43 | ~1897 |
| Helen Schaefer | Daughter | — | 10 | ~1930 |
| Hilda Schaefer | Spouse | — | 35 | ~1905 |
Census Appearances
1930
St Clair, …
Head, age 31
St Clair, Illinois · implied b. ~1899 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schaefer |
| Given Name | William H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 27 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | O |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Radio Set | R |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
St.-Clair-County, Illinois
Head, age 43
St.-Clair-County, Illinois · implied b. ~1897 — 7 household members
| Surname | Schaefer |
| Given Name | William H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Prairie Du Long |
| 1935 Residence (County) | St. Clair |
| Occupation | farming |
| Industry | farmer |
| Class of Worker | OA |
| Hours Worked | 72 |
| Income (1939) | 950 |
| Highest Grade | No 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 Schaefer across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
William Schaefer
Head · 1940 · age 43 · b. ~1897 · Illinois
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — St.-Clair-County, Illinois
Open full size
1940 US Federal Census — St.-Clair-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00882-00615)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Robert Probst | 31 | Son | Farming | Illinois |
| 2 | Herbert Probst | 22 | Son | Moulder | Illinois |
| 3 | Willard Probst | 20 | Son | Farming | Illinois |
| 4 | Alvin D. Boerner | 44 | Head | Farming | Illinois |
| 5 | Mathilda Boerner | 70 | Mother | — | Illinois |
| 6 | Adolph Rittmeyer | 47 | Head | Farming | Illinois |
| 7 | Goldie Rittmeyer | 39 | Wife | — | Arkansas |
| 8 | Henry Rittmeyer | 17 | Son | Farming | Illinois |
| 9 | Betty Rittmeyer | 15 | Daughter | Farming | Illinois |
| 10 | Louis Harmann | 63 | Head | Farming | Illinois |
| 11 | Mary Harmann | 53 | Wife | Farming | Illinois |
| 12 | Henry E. Harmann | 18 | Son | Farming | Illinois |
| 13 | Marie Harmann | 16 | Daughter | Farming | Illinois |
| 14 | Margaret Harmann | 13 | Daughter | — | Illinois |
| 15 | Henry Harmann | 67 | Brother | Farming | Illinois |
| 16 | Anthony Harmann | 65 | Brother | Farming | Illinois |
| 17 | Ferdinand Schaefer | 75 | Head | Farming | Illinois |
| 18 | Dorothy Schaefer | 64 | Wife | — | Illinois |
| 19 | Leo Schaefer | 29 | Son | Farming | Illinois |
| 20 | William Wittingham | 63 | Head | Farming | Illinois |
| 21 | Emma Wittingham | 59 | Wife | — | Illinois |
| 22 | Laura Wittingham | 29 | Daughter | — | Illinois |
| 23 | Albert Wittingham | 22 | Son | Farming | Illinois |
| 24 | William Jr. Wittingham | 20 | Son | Farming | Illinois |
| 25 | Louisa Fleckenstein | 74 | Head | Farming | Illinois |
| 26 | Leona Barthel | 43 | Lodger | — | Illinois |
| 27 | William H. Schaefer THIS PERSON | 43 | Head | Farming | Illinois |
| 28 | Hilda Schaefer | 35 | Wife | — | Illinois |
| 29 | Helen Schaefer | 10 | Daughter | — | Illinois |
| 30 | Walter Schaefer | 9 | Son | — | Illinois |
| 31 | Juanita Schaefer | 7 | Daughter | — | Illinois |
| 32 | Rose Marie Schaefer | 5 | Daughter | — | Illinois |
| 33 | Rita Schaefer | 3 | Daughter | — | Illinois |
| 34 | John Meyer | 47 | Head | Farming | Illinois |
| 35 | Aurelia Meyer | 28 | Wife | — | Illinois |
| 36 | Gloria Meyer | 3 | Daughter | — | Illinois |
| 37 | Anton W. Meyer | 43 | Head | Farming | Illinois |
| 38 | Laura Meyer | 44 | Wife | — | Illinois |
| 39 | Virginia Meyer | 15 | Daughter | — | Illinois |
| 40 | Eugenia Meyer | 10 | Daughter | — | 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)