JH
John Heller — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Clayton-County, Iowa
Our Model Tree links this John Heller across the 1930 and 1940 US Censuses in Clayton-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1886), then head of a 8-person household.
Age 54
b. ~1886
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Clayton-County, Iowa |
| Surname | Heller |
| Given Name | John C. |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Millville Twp |
| 1935 Residence (County) | Clayton |
| Additional Details | |
| Occupation | farmer |
| Industry | farm |
| Class of Worker | OA |
| Hours Worked | 70 |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farmer |
| Township / Ward | Millville Twp |
| Est. Birth Year | ~1886 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mary Stangle | Other | — | 56 | ~1884 |
| Germaine Heller | Daughter | — | 14 | ~1926 |
| Edna Heller | Daughter | — | 15 | ~1925 |
| Marcella Heller | Daughter | — | 17 | ~1923 |
| John Heller | Head | — | 54 | ~1886 |
| Margaret Heller | Other | — | 89 | ~1851 |
| Antonia Heller | Spouse | — | 50 | ~1890 |
| Ralph Heller | Son | — | 12 | ~1928 |
Census Appearances
1930
Clayton, Iowa
Head, age 44
Clayton, Iowa · implied b. ~1886 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hillers |
| Given Name | John M. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 29 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Farming |
| Industry | Gen Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Clayton-County, Iowa
Head, age 54
Clayton-County, Iowa · implied b. ~1886 — 8 household members
| Surname | Heller |
| Given Name | John C. |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Millville Twp |
| 1935 Residence (County) | Clayton |
| Occupation | farmer |
| Industry | farm |
| Class of Worker | OA |
| Hours Worked | 70 |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 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 Heller across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Heller
Head · 1940 · age 54 · b. ~1886 · Iowa
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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 — Clayton-County, Iowa
Open full size
1940 US Federal Census — Clayton-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01149-00571)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mertelle Mast | 13 | nephew | — | Iowa |
| 2 | Raymond Friedlein | 32 | head | Farmer | Iowa |
| 3 | Phyllis Friedlein | 21 | wife | — | Iowa |
| 4 | Gaylord Friedlein | 0 | son | — | Iowa |
| 5 | John Livingstone | 62 | head | Farmer | Iowa |
| 6 | Hattie Livingstone | 62 | wife | — | Iowa |
| 7 | Carl Friedlein | 26 | head | Farmer | Iowa |
| 8 | Dorothy Friedlein | 23 | wife | — | Iowa |
| 9 | Shirleen Friedlein | 3 | daughter | — | Iowa |
| 10 | Stanley Carl Friedlein | 0 | son | — | Iowa |
| 11 | Fred B. Torrey | 56 | head | Farmer | Iowa |
| 12 | Esther Torrey | 55 | wife | — | Iowa |
| 13 | Harold Torrey | 18 | son | Laborer | Iowa |
| 14 | Cecil Torrey | 16 | son | Laborer | Iowa |
| 15 | Fred G. Niehaus | 51 | head | Farmer | Iowa |
| 16 | Gusta Niehaus | 38 | wife | — | Iowa |
| 17 | Fred Jr. Niehaus | 17 | son | Laborer | Iowa |
| 18 | Dale Niehaus | 16 | son | Laborer | Iowa |
| 19 | Oakley Anderegg | 29 | head | Farmer | Iowa |
| 20 | Josephine Anderegg | 27 | wife | — | Iowa |
| 21 | Donna Anderegg | 2 | daughter | — | Iowa |
| 22 | James Hanker | 19 | brother-in-law | Laborer | Iowa |
| 23 | Ab V. Pinn | 42 | head | Farmer | Iowa |
| 24 | Margaret Pinn | 43 | wife | — | Iowa |
| 25 | Jeanette Pinn | 17 | daughter | — | Iowa |
| 26 | Merlin Pinn | 13 | son | — | Iowa |
| 27 | John C. Heller THIS PERSON | 54 | head | Farmer | Iowa |
| 28 | Antonia Heller | 50 | wife | — | Iowa |
| 29 | Marcella Heller | 17 | daughter | — | Iowa |
| 30 | Edna Heller | 15 | daughter | — | Iowa |
| 31 | Germaine Heller | 14 | daughter | — | Iowa |
| 32 | Ralph Heller | 12 | son | — | Iowa |
| 33 | Margaret Heller | 89 | mother | — | Germany |
| 34 | Mary Stangle | 56 | sister | Practical Nurse | Iowa |
| 35 | Ray Anderegg | 32 | head | Farmer | Iowa |
| 36 | Alvina Anderegg | 32 | wife | — | Iowa |
| 37 | Robert Anderegg | 7 | son | — | Iowa |
| 38 | Roger Anderegg | 2 | son | — | Iowa |
| 39 | James Appenzeller | 31 | hired hand | Laborer | Minnesota |
| 40 | Benjamin Meyers | 75 | head | Farmer | Iowa |
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)