RW
Robert Wolf — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Robert Wolf across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents George & George — first a son (b.~1919), then head of a 6-person household.
Age 21
b. ~1919
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Wolf |
| Given Name | Robert |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Film retoucher |
| Industry | Engraving & printing |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 750 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Film Retoucher |
| Township / Ward | Chicago |
| Est. Birth Year | ~1919 |
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 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Ruth Wolf | Daughter | — | 28 | ~1912 |
| Dorothy Wolf | Daughter | — | 18 | ~1922 |
| George Wolf | Son | — | 23 | ~1917 |
| Robert Wolf | Son | — | 21 | ~1919 |
| George Wolf | Head | — | 56 | ~1884 |
| Otillia Wolf | Spouse | — | 53 | ~1887 |
Census Appearances
1920
Cook, Illinois
Son, age
Cook, Illinois · implied b. ~1920 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wolf |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 11
Cook, Illinois · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wolf |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 21
Cook-County, Illinois · implied b. ~1919 — 6 household members
| Surname | Wolf |
| Given Name | Robert |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Occupation | Film retoucher |
| Industry | Engraving & printing |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 750 |
| 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 Robert 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 father George Wolf (~0.92 confidence) and father Joseph Wolf (~0.92 confidence) and mother Arethe Wolf (~0.92 confidence) and mother Otillia Wolf (~0.92 confidence) and mother Ottillia Wolf (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
George Wolf
b. ~1884
Source father
● Household
· direct · ~0.92
Father
George Wolf
b. ~1884
Source father
● Household
· direct · ~0.92
Father
Joseph Wolf
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Arethe Wolf
b. ~1891
Source mother
● Household
· direct · ~0.92
Mother
Otillia Wolf
b. ~1887
Source mother
● Household
· direct · ~0.92
Mother
Ottillia Wolf
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Wolf
Son · 1940 · age 21 · b. ~1919 · Illinois
★ You are viewing this record
Sibling
George Wolf
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Wolf
Sibling · 1940 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Wolf
Sibling · 1940 · age 18
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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01014-00513)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Barbara Kummer | 21 | daughter | Assembler | Illinois |
| 42 | Albert Kummer | 15 | son | — | Illinois |
| 43 | Walter Trebick | 50 | head | Chauffeur | Illinois |
| 44 | Emma Trebick | 53 | wife | — | Wisconsin |
| 45 | Vernon S. Trebick | 21 | son | Truck Driver | Illinois |
| 46 | Fritz Sroka | 49 | head | Butcher | Germany |
| 47 | Walburga Sroka | 54 | wife | — | Germany |
| 48 | Patrick Connolly | 69 | head | Laborer | New York |
| 49 | Nora Connolly | 63 | wife | — | New York |
| 50 | Sarah B. Connolly | 30 | daughter | Sales Clerk | Illinois |
| 51 | Stephen Connolly | 28 | son | Polisher On Radio Parts | Illinois |
| 52 | James Connolly | 24 | son | — | Illinois |
| 53 | George Wolf | 56 | head | — | Illinois |
| 54 | Otillia Wolf | 53 | wife | — | Illinois |
| 55 | Ruth Wolf | 28 | daughter | Secty Stenogr. | Illinois |
| 56 | George Wolf | 23 | son | Clerk | Illinois |
| 57 | Robert Wolf THIS PERSON | 21 | son | Film Retoucher | Illinois |
| 58 | Dorothy Wolf | 18 | daughter | New Worker | Illinois |
| 59 | Herbert Jacobs | 49 | head | Clerk | Illinois |
| 60 | Alma Jacobs | 48 | wife | — | Illinois |
| 61 | Harold-Ab Jacobs | 21 | son | Lifeguard | Illinois |
| 62 | Lois Jacobs | 16 | daughter | — | Illinois |
| 63 | John Schmaly | 30 | head | Automob Screw Machine | Illinois |
| 64 | Edna Schmaly | 26 | wife | — | Illinois |
| 65 | Adolph Miller | 77 | head | — | Illinois |
| 66 | Esther Miller | 43 | daughter | — | Illinois |
| 67 | Lucille Miller | 37 | daughter | Telegraph Operator | Illinois |
| 68 | Henry A. Evert | 47 | head | Cashier Salesman | Illinois |
| 69 | Louise M. Evert | 47 | wife | — | Illinois |
| 70 | Edwin C. Jacobs | 56 | head | Laborer | Illinois |
| 71 | Sophie W. Jacobs | 54 | wife | — | Illinois |
| 72 | Frieda Schuenke | 50 | lodger | House Help | Illinois |
| 73 | Martin Daal | 64 | head | Traveling Secretary | Wisconsin |
| 74 | Clara Daal | 64 | wife | — | Indiana |
| 75 | Clara Daal | 36 | daughter | Book Keeper | Illinois |
| 76 | Walter Daal | 31 | son | Mechanic | Illinois |
| 77 | Peter O'Toole | 33 | head | Laborer | New York |
| 78 | Mary O'Toole | 30 | wife | — | New York |
| 79 | Thomas B. O'Toole | 2 | son | — | Illinois |
| 80 | Kathryn M. O'Toole | 1 | daughter | — | Illinois |
Pedigree Summary
Robert + 3 siblings
Gen 1 · 6 parents
~0.92
Max depth 4 (1900–1950 window)
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)