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John Schaefer — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Pottawattamie-County, Iowa
Our Model Tree links this John Schaefer across the 1930 and 1940 US Censuses in Pottawattamie-County, Iowa (XGBoost, ~Confirmed) — first a son (b.~1926), then head of a 11-person household.
Age 14
b. ~1926
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Pottawattamie-County, Iowa |
| Surname | Schaefer |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Council Bluffs City |
| 1935 Residence (County) | Patt |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Council Bluffs City |
| Est. Birth Year | ~1926 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Donald Schaefer | Son | — | 20 | ~1920 |
| Carl Shade | Other | — | 29 | ~1911 |
| Marion Schaefer | Son | — | 8 | ~1932 |
| Lucile Schaefer | Daughter | — | 12 | ~1928 |
| Audrey Schaefer | Daughter | — | 10 | ~1930 |
| John Schaefer | Head | — | 48 | ~1892 |
| Walter Schaefer | Son | — | 16 | ~1924 |
| Anna Schaefer | Spouse | — | 50 | ~1890 |
| Robert Schaefer | Son | — | 19 | ~1921 |
| Wilhelmina Miller | Other | — | 85 | ~1855 |
| John Schaefer | Son | — | 14 | ~1926 |
Census Appearances
1930
Pottawattamie, Iowa
Son, age 4
Pottawattamie, Iowa · implied b. ~1926 — 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 | 4 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Pottawattamie-County, Iowa
Son, age 14
Pottawattamie-County, Iowa · implied b. ~1926 — 11 household members
| Surname | Schaefer |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Council Bluffs City |
| 1935 Residence (County) | Patt |
| Class of Worker | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 14 · b. ~1926 · Iowa
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Sibling
Lucile Schaefer
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marion Schaefer
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Audrey Schaefer
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Schaefer
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Walter Schaefer
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Schaefer
Sibling · 1940 · age 19
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 — Pottawattamie-County, Iowa
Open full size
1940 US Federal Census — Pottawattamie-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01198-00611)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Martin F. Shoptaw | 44 | Head | Labor | Illinois |
| 2 | Rose E. Shoptaw | 40 | Wife | — | Iowa |
| 3 | Georgia Greer | 85 | Lodger | — | Pennsylvania |
| 4 | Forest Anderson | None | Left by mistake | — | — |
| 5 | Edgar Spellmeyer | 55 | Lodger | Bartender | Iowa |
| 6 | J. E. Johnson | 74 | Head | Paperhanger | Denmark |
| 7 | Minnie E. Johnson | 75 | Wife | — | Denmark |
| 8 | William M. Berstein | 50 | Head | 40 | Russia |
| 9 | Sarah Berstein | 49 | Wife | — | Russia |
| 10 | Julius Berstein | 27 | Son | 54 | Iowa |
| 11 | Marion Berstein | 15 | Daughter | — | Iowa |
| 12 | Rose Berstein | 18 | Daughter | 40 | Iowa |
| 13 | Ralph E. Smith | 38 | Head | Machine Operator | Iowa |
| 14 | Helene Smith | 37 | Wife | — | Nebraska |
| 15 | Anita Smith | 17 | Daughter | — | Iowa |
| 16 | Albert Smith | 11 | Son | — | Iowa |
| 17 | Roseanna Stone | 70 | Mother in law | — | Iowa |
| 18 | Raymond Granco | 22 | Head | Bartender | Iowa |
| 19 | Lillie E. Granco | 31 | Wife | — | Nebraska |
| 20 | Beverly Granco | 1 | Daughter | — | Iowa |
| 21 | Carol Roberts | 41 | Lodger | Music Teacher | Arkansas |
| 22 | Robert Hirlin | 68 | Head | Stationary Engineer | Free State |
| 23 | Minnie Hirlin | 68 | Wife | — | Iowa |
| 24 | John Schaefer | 48 | Head | Automobile Mechanic | Arkansas |
| 25 | Anna Schaefer | 50 | Wife | — | Iowa |
| 26 | Donald Schaefer | 20 | Son | Truck Driver | Iowa |
| 27 | Robert Schaefer | 19 | Son | Labor | Iowa |
| 28 | Walter Schaefer | 16 | Son | — | Iowa |
| 29 | John Schaefer THIS PERSON | 14 | Son | — | Iowa |
| 30 | Lucile Schaefer | 12 | Daughter | — | Iowa |
| 31 | Audrey Schaefer | 10 | Daughter | — | Iowa |
| 32 | Marion Schaefer | 8 | Son | — | Iowa |
| 33 | Wilhelmina Miller | 85 | Mother in law | — | Germany |
| 34 | Carl Shade | 29 | Lodger | Labor | Missouri |
| 35 | Lester A. Arnold | 66 | Head | Labor | Illinois |
| 36 | Lotta M. B. Arnold | 62 | Wife | — | New York |
| 37 | James T. Lane | 68 | Head | — | Missouri |
| 38 | Rachel A. Lane | 48 | Wife | — | Missouri |
| 39 | Ethel Mae Herring | 56 | Lodger | House Work | So Dakota |
| 40 | James F. Hackerman | 13 | Lodger | — | So Dakota |
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)