JO
John Ott — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this John Ott across the 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a son (b.~1920), then head of a 11-person household.
Age 10
b. ~1920
Male
Son
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Ott |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Russia |
| Mother's Birthplace | Russia |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1920 |
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 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Emily Ott | Daughter | — | 19 | ~1911 |
| David Ott | Son | — | 12 | ~1918 |
| William Ott | Son | — | 3 | ~1927 |
| Charles Ott | Son | — | 21 | ~1909 |
| John Ott | Son | — | 10 | ~1920 |
| Fred Ott | Son | — | 5 | ~1925 |
| George Ott | Son | — | 8 | ~1922 |
| Henry Ott | Son | — | 17 | ~1913 |
| Charles Ott | Head | — | 46 | ~1884 |
| Agnes Jornd | Other | — | 18 | ~1912 |
| Sophie Ott | Spouse | — | 42 | ~1888 |
Census Appearances
1930
Cook, Illinois
Son, age 10
Cook, Illinois · implied b. ~1920 — 11 household members
| Surname | Ott |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Russia |
| Mother's Birthplace | Russia |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Other, age 19
Cook-County, Illinois · implied b. ~1921 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Otto |
| Given Name | John |
| Relationship to Head | Nephew |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | Hs 4 |
| 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 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 · 1930 · age 10 · b. ~1920 · Illinois
★ You are viewing this record
Sibling
Henry Ott
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Ott
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Ott
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Ott
Sibling · 1930 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Emily Ott
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David Ott
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Fred Ott
Sibling · 1930 · age 5
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
1930 US Federal Census — Cook, Illinois
Open full size
1930 US Federal Census — Cook, Illinois
Page Contents
50 people indexed on this census page (ia:1930:illinoiscensus00reel481:1040)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George Neuman | 27 | Head | Baker | Illinois |
| 2 | Leona Neuman | 24 | Wife | — | Ohio |
| 3 | Robert Neuman | 2 | Son | — | Illinois |
| 4 | Patricia Neuman | 0 | Daughter | — | Illinois |
| 5 | Gretta Mugier | 18 | Servant | Servant | Illinois |
| 6 | Conrad Nygard | 37 | Head | Bldg Superintendent | Norway |
| 7 | Estelle Nygard | 33 | Wife | — | Wisconsin |
| 8 | Jean Nygard | 14 | Daughter | — | Illinois |
| 9 | Violet Nygard | 11 | Daughter | — | Illinois |
| 10 | Ruby Rose Nygard | 8 | Daughter | — | Canada |
| 11 | Arthur Nygard | 6 | Son | — | Illinois |
| 12 | Felix Radonski | 23 | Lodger | Chauffeur | Illinois |
| 13 | Frank Hobson | 33 | Lodger | Salesman | Michigan |
| 14 | Lenore Hobson | 26 | Lodger | Operator | Illinois |
| 15 | Anton Cazolas | 33 | Head | Manager | Greece |
| 16 | Evelyn Cazolas | 23 | Wife | — | Illinois |
| 17 | Leo Cazolas | 2 | Son | — | Illinois |
| 18 | Albert Lehanan | 15 | Brother-in-law | — | Wisconsin |
| 19 | Theresa Lehanan | 20 | Sister-in-law | Waitress | Wisconsin |
| 20 | Amelia Gowicki | 59 | Head | — | Poland |
| 21 | Peter Pappas | 36 | Boarder | Manager | Greece |
| 22 | Sam Adams | 37 | Head | Manager | Greece |
| 23 | Stella Adams | 31 | Wife | Saleslady | Greece |
| 24 | Angelo Adams | 9 | Son | — | Greece |
| 25 | Sophie Adams | 6 | Daughter | — | Greece |
| 26 | John Adams | 3 | Son | — | Greece |
| 27 | Charles Ott | 46 | Head | Cement Worker | Russia |
| 28 | Sophie Ott | 42 | Wife | — | Russia |
| 29 | Charles Jr. Ott | 21 | Son | Chauffeur | Russia |
| 30 | Emily Ott | 19 | Daughter | Servant | Russia |
| 31 | Henry Ott | 17 | Son | Helper | Illinois |
| 32 | David Ott | 12 | Son | — | Illinois |
| 33 | John Ott THIS PERSON | 10 | Son | — | Illinois |
| 34 | George Ott | 8 | Son | — | Illinois |
| 35 | Fred Ott | 5 | Son | — | Illinois |
| 36 | William Ott | 3 | Son | — | Illinois |
| 37 | Agnes Jornd | 18 | Boarder | Inspector | Iowa |
| 38 | Anthony Russ | 31 | Head | Mechanic | Illinois |
| 39 | Marie Russ | 28 | Wife | Operator | Wisconsin |
| 40 | Warren Russ | 5 | Son | — | Illinois |
| 41 | Joan Russ | 3 | Daughter | — | Illinois |
| 42 | Louis Merten | 34 | Head | Pressing | Illinois |
| 43 | Ruth Merten | 16 | Daughter | — | Illinois |
| 44 | Ethel Merten | 15 | Daughter | — | Illinois |
| 45 | Arthur Merten | 12 | Son | — | Illinois |
| 46 | Louis Shulski | 36 | Head | Machinist | Illinois |
| 47 | Elizabeth Shulski | 36 | Wife | — | Illinois |
| 48 | Shirley Shulski | 8 | Daughter | — | Illinois |
| 49 | Richard Shulski | 4 | Son | — | Illinois |
| 50 | Otto Mueller | 47 | Head | Salesman | Germany |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)