JW
John Wolf — 1930 US Census Record
Model Tree available1930 United States Federal Census · Cook, Illinois
Our Model Tree links this John Wolf across the 1920, 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed), with identified parents George & Agatha — first a son (b.~1908), then head of a 4-person household.
Age 22
b. ~1908
Male
Son
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Wolf |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Austria |
| Mother's Birthplace | Hungary |
| Additional Details | |
| Occupation | Bottler |
| Industry | Beverage Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Bottler |
| Est. Birth Year | ~1908 |
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.
4 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Dorothy Wolf | Daughter | — | 17 | ~1913 |
| George Wolf | Head | — | 47 | ~1883 |
| John Wolf | Son | — | 22 | ~1908 |
| Anna Wolf | Spouse | — | 45 | ~1885 |
Census Appearances
1920
Cook, Illinois
Son, age 12
Cook, Illinois · implied b. ~1908 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wolf |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Austria |
| Mother's Birthplace | Austria |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 22
Cook, Illinois · implied b. ~1908 — 4 household members
| Surname | Wolf |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Austria |
| Mother's Birthplace | Hungary |
| Occupation | Bottler |
| Industry | Beverage Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Head, age 32
Cook-County, Illinois · implied b. ~1908 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wolff |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | Medical Doctor |
| Industry | Private Practice |
| Class of Worker | OA |
| Hours Worked | 52 |
| Income (1939) | 2452 |
| Highest Grade | H 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 Wolf across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father George Wolf (~0.92 confidence) and mother Agatha Wolf (~0.92 confidence) and mother Anna Wolf (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
George Wolf
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Agatha Wolf
b. ~1883
Source mother
● Household
· direct · ~0.92
Mother
Anna Wolf
b. ~1885
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Wolf
Son · 1930 · age 22 · b. ~1908 · Illinois
★ You are viewing this record
Sibling
Dorothy Wolf
Sibling · 1930 · age 17
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
41 people indexed on this census page (ia:1930:illinoiscensus00reel436:0178)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Nick Klimick | 46 | Head | Boiler | Russia |
| 2 | Mary Klimick | 15 | Daughter | Bookkeeper | Illinois |
| 3 | John Klimick | 13 | Son | — | Illinois |
| 4 | Peter Melnik | 48 | Head | Printer | Poland |
| 5 | Helen Melnik | 40 | Wife | — | Poland |
| 6 | Peter Melnik | 14 | Son | — | Illinois |
| 7 | George Melnik | 2 | Son | — | Illinois |
| 8 | Theodore Marchuk | 45 | Boarder | Cement Worker | Poland |
| 9 | John Sitko | 48 | Head | Secretary | Poland |
| 10 | Frances Sitko | 44 | Wife | — | Russia |
| 11 | Joseph Sitko | 21 | Son | Excavating | Illinois |
| 12 | Andrew Jacobs | 44 | Head | Pattern Maker | Poland |
| 13 | Anna Jacobs | 43 | Wife | — | Poland |
| 14 | Rose Jacobs | 16 | Daughter | — | Poland |
| 15 | John Jacobs | 15 | Son | — | Illinois |
| 16 | Anna Jacobs | 13 | Daughter | — | Illinois |
| 17 | John Jacobs | 11 | Son | — | Illinois |
| 18 | Frank Jacobs | 4 | Son | — | Illinois |
| 19 | Anthony Walkowiak | 41 | Head | Car Inspector | Poland |
| 20 | Rose Walkowiak | 43 | Wife | — | Poland |
| 21 | John Walkowiak | 18 | Son | Laborer | Illinois |
| 22 | Leo Walkowiak | 15 | Son | — | Illinois |
| 23 | Edward Walkowiak | 13 | Son | — | Illinois |
| 24 | Nattie Walkowiak | 11 | Daughter | — | Illinois |
| 25 | Harry Walkowiak | 7 | Son | — | Illinois |
| 26 | George Wolf | 47 | Head | Bottler | Austria |
| 27 | Anna Wolf | 45 | Wife | — | Hungary |
| 28 | John Wolf THIS PERSON | 22 | Son | Bottler | Illinois |
| 29 | Dorothy Wolf | 17 | Daughter | Typist | Illinois |
| 30 | Charles Scyper | 37 | Head | Inspector | Poland |
| 31 | Bessie Scyper | 32 | Wife | — | Poland |
| 32 | Lillian Scyper | 9 | Daughter | — | Illinois |
| 33 | Florence Scyper | 6 | Daughter | — | Illinois |
| 34 | Mathias Zimmerman | 44 | Head | Carpenter | Hungary |
| 35 | Emma Zimmerman | 44 | Wife | — | Germany |
| 36 | Margaret Zimmerman | 21 | Daughter | — | Illinois |
| 37 | Thomas Kus | 40 | Head | Scrap Iron | Poland |
| 38 | Mary Kus | 35 | Wife | — | Poland |
| 39 | Mary Kus | 15 | Daughter | — | Illinois |
| 40 | John Kus | 9 | Son | — | Illinois |
| 41 | Edward Kus | 7 | Son | — | Illinois |
Pedigree Summary
John + 1 sibling
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)