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John Ott — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cerro-Gordo-County, Iowa
Our Model Tree links this John Ott across the 1930 and 1940 US Censuses in Cerro-Gordo-County, Iowa (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 7-person household.
Age 13
b. ~1927
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cerro-Gordo-County, Iowa |
| Surname | Ott |
| Given Name | John G. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Clear Lake City |
| 1935 Residence (County) | Cerro Gordo |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Clear Lake City |
| Est. Birth Year | ~1927 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Donald Ott | Son | — | 15 | ~1925 |
| Margaret Ott | Daughter | — | 11 | ~1929 |
| Dorothy Ott | Daughter | — | 14 | ~1926 |
| Ralph Ott | Son | — | 9 | ~1931 |
| John Ott | Son | — | 13 | ~1927 |
| Ralph Ott | Head | — | 41 | ~1899 |
| Nettie Ott | Spouse | — | 43 | ~1897 |
Census Appearances
1930
Cerro Gordo, …
Son, age 3
Cerro Gordo, Iowa · implied b. ~1927 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Ott |
| Given Name | John F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Wisconsin |
| Occupation | none |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Cerro-Gordo-County, Iowa
Son, age 13
Cerro-Gordo-County, Iowa · implied b. ~1927 — 7 household members
| Surname | Ott |
| Given Name | John G. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Clear Lake City |
| 1935 Residence (County) | Cerro Gordo |
| Highest Grade | No 5 |
| 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 Ott across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Ott
Son · 1940 · age 13 · b. ~1927 · Iowa
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Sibling
Ralph Ott
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Ott
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Ott
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Ott
Sibling · 1940 · age 15
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 — Cerro-Gordo-County, Iowa
Open full size
1940 US Federal Census — Cerro-Gordo-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01146-00078)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Addie Hanley | 27 | wife | — | Iowa |
| 2 | Shirley Hanley | 1 | daughter | — | Iowa |
| 3 | Milton J. Carr | 45 | head | Road Maintenance | Iowa |
| 4 | Palma Carr | 47 | wife | — | Iowa |
| 5 | Daphne Carr | 19 | daughter | Typing | Iowa |
| 6 | Joan Carr | 14 | daughter | — | Iowa |
| 7 | Martin E. Lothe | 34 | head | Trucking | Nebraska |
| 8 | Mary Pendleton | 66 | servant | Housekeeper | Iowa |
| 9 | Mary Glass | 56 | head | Night Cook | Iowa |
| 10 | Irene Glass | 20 | daughter | — | Iowa |
| 11 | Frank Kaster | 36 | head | Laborer | Iowa |
| 12 | Iris Kaster | 38 | wife | — | Iowa |
| 13 | Barbara Kaster | 9 | daughter | — | Iowa |
| 14 | Dean Kaster | 8 | son | — | Iowa |
| 15 | Jerry Kaster | 6 | son | — | Iowa |
| 16 | David Hulbert | 59 | head | — | Iowa |
| 17 | James Comisbear | 43 | head | Price Worker | Illinois |
| 18 | Elsie Comisbear | 44 | wife | — | Iowa |
| 19 | Norma Comisbear | 18 | daughter | New Worker | Minnesota |
| 20 | Christ Anderson | 66 | head | — | Norway |
| 21 | Sarah Anderson | 61 | wife | — | Iowa |
| 22 | Ralph Ott | 41 | head | Letter Carrier | Iowa |
| 23 | Nettie Ott | 43 | wife | — | Wisconsin |
| 24 | Donald Ott | 15 | son | Weeding | Iowa |
| 25 | Dorothy Ott | 14 | daughter | — | Iowa |
| 26 | John G. Ott THIS PERSON | 13 | son | — | Iowa |
| 27 | Margaret Ott | 11 | daughter | — | Iowa |
| 28 | Ralph Jr. Ott | 9 | son | — | Iowa |
| 29 | Herman Thrun | 63 | head | Gardening | Germany |
| 30 | Ida Thrun | 60 | wife | — | Illinois |
| 31 | Alonzo Foy | 72 | head | Shale Picker | Iowa |
| 32 | Annie Foy | 64 | wife | — | Iowa |
| 33 | Grant Foy | 42 | head | Laborer | Iowa |
| 34 | Pauline Foy | 35 | wife | — | Iowa |
| 35 | Wilma J. Foy | 8 | daughter | — | Iowa |
| 36 | Harvey E. Smith | 79 | head | — | Indiana |
| 37 | Anna S. Smith | 78 | wife | — | Indiana |
| 38 | Carl Hatfield | 50 | head | Laborer | Illinois |
| 39 | Dora Hatfield | 34 | wife | — | Iowa |
| 40 | Flornetta Hatfield | 16 | daughter | — | Minnesota |
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)