JK
John Kern — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this John Kern across the 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a son (b.~1930), then head of a 6-person household.
Age 0
b. ~1930
Male
Son
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Kern |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Kentucky |
| Additional Details | |
| Can Read/Write | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago |
| Est. Birth Year | ~1930 |
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.
6 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Bert Kern | Head | — | 28 | ~1902 |
| Jane Kern | Daughter | — | 3 | ~1927 |
| Ruth Kern | Daughter | — | 1 | ~1929 |
| John Kern | Son | — | ~1930 | |
| Bert Kern | Son | — | 7 | ~1923 |
| Margaret Kern | Spouse | — | 27 | ~1903 |
Census Appearances
1930
Cook, Illinois
Son, age
Cook, Illinois · implied b. ~1930 — 6 household members
| Surname | Kern |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Kentucky |
| Can Read/Write | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 11
Cook-County, Illinois · implied b. ~1929 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kearns |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Highest Grade | 2 |
| 1935 Residence | Same house |
| 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 Kern across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Kern
Son · 1930 · age 0 · b. ~1930 · Illinois
★ You are viewing this record
Sibling
Ruth Kern
Sibling · 1930 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bert Kern
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jane Kern
Sibling · 1930 · age 3
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:illinoiscensus00reel496:0902)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William Kempas | 2 | Son | — | Greece |
| 2 | Stephan Kempas | 57 | — | Retired | Greece |
| 3 | Alex Kempas | 37 | brother | Owner | Greece |
| 4 | James Kempas | 33 | Head | Owner | Greece |
| 5 | Virginia Kempas | 24 | Wife | None | Illinois |
| 6 | Peter Kempas | 37 | Brother | Owner | Greece |
| 7 | George Kempas | 15 | Brother | Owner | Greece |
| 8 | Dr. Stanley W. Winnie | 53 | Head | Physician | Illinois |
| 9 | Margaret Winnie | 49 | Wife | None | Minnesota |
| 10 | Charles R. Brown | 27 | Step-son | Salesman | Illinois |
| 11 | Howard Caldwell | 56 | Head | Insurance Broker | Nova Scotia |
| 12 | Gertrude M. Caldwell | 50 | Wife | None | Canada |
| 13 | Margaret Caldwell | 26 | Daughter | Secretary | Massachusetts |
| 14 | Ethel Caldwell | 24 | Daughter | Clerical Work | Massachusetts |
| 15 | Doris Caldwell | 15 | Daughter | None | Massachusetts |
| 16 | Chester R. Wells | 34 | Head | Sales Dept | Connecticut |
| 17 | Elsie Wells | 31 | Wife | None | Connecticut |
| 18 | Barbara Wells | 5 | Daughter | — | Connecticut |
| 19 | Bert A. Kern | 28 | Head | Cabinet Maker | Illinois |
| 20 | Margaret Kern | 27 | Wife | None | Kentucky |
| 21 | Bert A. Jr. Kern | 7 | Son | — | Illinois |
| 22 | Jane Kern | 3 | Daughter | — | Illinois |
| 23 | Ruth Kern | 1 | Daughter | — | Illinois |
| 24 | John Kern THIS PERSON | 0 | Son | — | Illinois |
| 25 | Theodore Czerwionka | 41 | Head | Fireman | Illinois |
| 26 | Rose Czerwionka | 38 | Wife | None | Illinois |
| 27 | Eleanor Czerwionka | 15 | Daughter | None | Illinois |
| 28 | Fred Czerwionka | 13 | Son | None | Illinois |
| 29 | Theodore Czerwionka | 11 | Son | None | Illinois |
| 30 | Irene Czerwionka | 9 | Daughter | — | Illinois |
| 31 | Rosalie Czerwionka | 8 | Daughter | — | Illinois |
| 32 | Frank Czerwionka | 6 | Son | — | Illinois |
| 33 | John Pieniadz | 48 | Head | Laborer | Poland |
| 34 | Angeline Pieniadz | 37 | Wife | None | Poland |
| 35 | Mary Pieniadz | 13 | Daughter | — | Illinois |
| 36 | Leo Pieniadz | 12 | Son | — | Illinois |
| 37 | Frank Pieniadz | 9 | Son | — | Illinois |
| 38 | Michael Zurek | 44 | Head | Truck Chauffeur | Illinois |
| 39 | Catherine Zurek | 42 | Wife | None | Poland |
| 40 | Anthony Zurek | 14 | Son | None | Illinois |
| 41 | Rose Zurek | 13 | Daughter | None | Illinois |
| 42 | Mary Zurek | 12 | Daughter | None | Illinois |
| 43 | Michael Skurrut | 62 | Head | Laborer | Poland |
| 44 | Nellie Skurrut | 64 | Wife | None | Poland |
| 45 | Michael Kass | 63 | Head | Laborer | Poland |
| 46 | Katherine Kass | 61 | Wife | None | Poland |
| 47 | Guy Wilhelm | 71 | Head | Chauffeur | Germany |
| 48 | Helen Wilhelm | 71 | Wife | None | Michigan |
| 49 | Helen Wilhelm | 5 | Daughter | — | Illinois |
| 50 | Lucille Pearson | 16 | Daughter | None | Michigan |
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)