JB
John Black — 1930 US Census Record
Model Tree available1930 United States Federal Census · Cook, Illinois
Our Model Tree links this John Black across the 1920, 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed), with identified parents Belle — first a son (b.~1896), then head of a 2-person household.
Age 34
b. ~1896
Male
Son
Born: Wisconsin
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Black |
| Given Name | John M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | — |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Michigan |
| Additional Details | |
| Occupation | Agent |
| Industry | Life Insurance |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | Yes |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Occupation | Agent |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1896 |
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.
2 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Belle Black | Head | — | 62 | ~1868 |
| John Black | Son | — | 34 | ~1896 |
Census Appearances
1920
Cook, Illinois
Other, age 23
Cook, Illinois · implied b. ~1897 — 31 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Black |
| Given Name | John |
| Relationship to Head | Lodger |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Wisconsin |
| Occupation | Publisher |
| Industry | Trade Journal |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1930
Cook, Illinois
Son, age 34
Cook, Illinois · implied b. ~1896 — 2 household members
| Surname | Black |
| Given Name | John M. |
| Relationship to Head | Son |
| Sex | M |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Michigan |
| Occupation | Agent |
| Industry | Life Insurance |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | Yes |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Cook-County, Illinois
Head, age 43
Cook-County, Illinois · implied b. ~1897 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Block |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | Sales Man |
| Industry | General Insurance |
| Class of Worker | OA |
| Hours Worked | 54 |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
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 Black across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Belle Black (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Belle Black
b. ~1868
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Black
Son · 1930 · age 34 · b. ~1896 · Illinois
★ You are viewing this record
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:illinoiscensus00reel420:0388)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ralph Green | 54 | Head | Real Estate | Poland |
| 2 | Jennie L. Green | 47 | Wife-H | Social Service | Ohio |
| 3 | Minna L. Green | 22 | Daughter | Teacher | Ohio |
| 4 | Rosalind Green | 20 | Daughter | None | Illinois |
| 5 | C. Arch Williams | 60 | Head | Attorney | Ohio |
| 6 | Fay Williams | 45 | Wife-H | None | Virginia |
| 7 | Jacob Haus | 39 | Head | Janitor | Russia-Samara |
| 8 | Agnes Haus | 34 | Wife-H | None | Austria-Bohemia |
| 9 | Tony Gummip | 49 | Head | Messenger | Indiana |
| 10 | Mary R. Gummip | 35 | Wife-H | None | Illinois |
| 11 | Maria L. Henderson | 80 | Mother in law | None | Pennsylvania |
| 12 | Preston E. Metheven | 59 | Head | Dentist | Ohio |
| 13 | Leila G. Metheven | 42 | Wife-H | None | Nebraska |
| 14 | Edward Broderman | 33 | Head | Cashier | Germany-Lippe |
| 15 | Irma D. Broderman | 31 | Wife-H | None | Illinois |
| 16 | George A. Stearns | 51 | Head | Manager | Illinois |
| 17 | Ida G. Stearns | 46 | Wife-H | None | Iowa |
| 18 | Byrde Schant | 48 | Head | None | Illinois |
| 19 | David Rosenbad | 50 | Head | Sales Manager | Ohio |
| 20 | Ruth Rosenbad | 48 | Wife-H | None | Florida |
| 21 | Judith F. Rosenbad | 15 | Daughter | None | Illinois |
| 22 | Robert E. Smith | 59 | Head | None | Iowa |
| 23 | Olive C. Smith | 60 | Wife-H | None | Iowa |
| 24 | Dan T. Smith | 22 | Son | None | Illinois |
| 25 | Mary C. Smith | 20 | Adopted Daughter | None | Ohio |
| 26 | Isaac B. Fox | 48 | Head | Proprietor | Russia-Yid |
| 27 | Libby Fox | 48 | Wife-H | None | Russia-Yid |
| 28 | Jay Gould | 45 | Head | Proprietor | Illinois |
| 29 | Berd Gould | 43 | Wife-H | Partner | Canada-English |
| 30 | Jay Jr. Gould | 13 | Son | None | Illinois |
| 31 | Irving F. Stern | 24 | Head | Lawyer | Illinois |
| 32 | Florence S. Stern | 21 | Wife-H | None | Illinois |
| 33 | Louis Apple | 28 | Head | Manager | Illinois |
| 34 | Harriet Apple | 28 | Wife-H | None | Illinois |
| 35 | Eileen S. Apple | 1 | Daughter | None | Illinois |
| 36 | Clifton G. Kemper | 40 | Head | Salesman | Illinois |
| 37 | Katherine E. Kemper | 35 | Wife-H | None | Wisconsin |
| 38 | Belle M. Black | 62 | Head | None | Michigan |
| 39 | John M. Black THIS PERSON | 34 | Son | Agent | Wisconsin |
| 40 | Gene Paddon | 33 | Head | Proprietor | Illinois |
| 41 | Mary Paddon | 33 | Wife-H | None | Illinois |
| 42 | Joseph E. Altmeier | 49 | Head | Special Real Estate | Ohio |
| 43 | Isabel E. Altmeier | 42 | Wife-H | None | Illinois |
| 44 | Margaret Ayres | 28 | Head | Accountant | Illinois |
| 45 | Eddie Ayres | 32 | Lodger | Salesman | Illinois |
| 46 | Albert M. Goldsmith | 26 | Head | Manager | Ohio |
| 47 | Stephanie E. Goldsmith | 23 | Wife-H | None | Austria-Yid |
| 48 | Frederick H. Swartz | 46 | Head | Dentist | Illinois |
| 49 | Grace M. Swartz | 36 | Wife-H | None | Illinois |
| 50 | John T. Gould | 69 | Uncle | Claim Adjuster | Illinois |
Pedigree Summary
John
Gen 1 · 1 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)