JW
John Wolf — 1940 US Census Record
Model Tree available1940 United States Federal Census · Livingston-County, Illinois
Our Model Tree links this John Wolf across the 1920, 1930 and 1940 US Censuses in Livingston-County, Illinois (XGBoost, ~Confirmed), with identified parents Frank & Frank — first a son (b.~1916), then head of a 5-person household.
Age 24
b. ~1916
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Livingston-County, Illinois |
| Surname | Wolf |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Odell Village |
| 1935 Residence (County) | Livingston |
| Additional Details | |
| Occupation | Attendant |
| Industry | Gasoline Filling station |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 741 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Attendant |
| Township / Ward | Odell Village |
| Est. Birth Year | ~1916 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Frank Wolf | Head | — | 50 | ~1890 |
| John Wolf | Son | — | 24 | ~1916 |
| James Wolf | Son | — | 7 | ~1933 |
| Frank Wolf | Son | — | 16 | ~1924 |
| Mary Wolf | Spouse | — | 48 | ~1892 |
Census Appearances
1920
Livingston, Illinois
Son, age 3
Livingston, Illinois · implied b. ~1917 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wolf |
| Given Name | John S. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Livingston, Illinois
Son, age 14
Livingston, Illinois · implied b. ~1916 — 40 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wolf |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| 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
Livingston-County, Illinois
Son, age 24
Livingston-County, Illinois · implied b. ~1916 — 5 household members
| Surname | Wolf |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Odell Village |
| 1935 Residence (County) | Livingston |
| Occupation | Attendant |
| Industry | Gasoline Filling station |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 741 |
| 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 Wolf across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Frank Wolf (~0.92 confidence) and father Frank Wolf (~0.92 confidence) and mother Mary Wolf (~0.92 confidence) and mother Nellie Wolf (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Frank Wolf
b. ~1890
Source father
● Household
· direct · ~0.92
Father
Frank Wolf
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Mary Wolf
b. ~1892
Source mother
● Household
· direct · ~0.92
Mother
Nellie Wolf
b. ~1893
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Wolf
Son · 1940 · age 24 · b. ~1916 · Illinois
★ You are viewing this record
Sibling
Frank Wolf
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Wolf
Sibling · 1940 · age 7
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 — Livingston-County, Illinois
Open full size
1940 US Federal Census — Livingston-County, Illinois
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00837-00553)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Jarleth | 24 | Son | Printer | Illinois |
| 2 | George Verdun | 29 | Head | Proprietor | Illinois |
| 3 | Elizabeth Verdun | 27 | Wife | — | Illinois |
| 4 | Joseph Redmond | 42 | Head | Farm Laborer | Illinois |
| 5 | Edward Redmond | 51 | Brother | Farm Laborer | Illinois |
| 6 | Loretta Redmond | 47 | Sister | — | Illinois |
| 7 | Bernice Redmond | 38 | Sister | Housekeeper | Illinois |
| 8 | John Riordan | 53 | Head | Canvasser | Illinois |
| 9 | Francis Ahrens | 23 | Roomer | Salesman | Illinois |
| 10 | Helen Ahrens | 25 | Roomer | — | Illinois |
| 11 | Shirley Chapman | 45 | Roomer | Baker | Illinois |
| 12 | Frank Wolf | 50 | Head | Laborer | Illinois |
| 13 | Mary E. Wolf | 48 | Wife | — | Illinois |
| 14 | John Wolf THIS PERSON | 24 | Son | Attendant | Illinois |
| 15 | Frank Wolf | 16 | Son | — | Illinois |
| 16 | James Wolf | 7 | Son | — | Illinois |
| 17 | Agnes Nowotny | 75 | Head | — | Illinois |
| 18 | Loreli Lowry | 17 | Granddaughter | Waitress | Illinois |
| 19 | Frank Jamison | 71 | Head | — | Illinois |
| 21 | Christian Christiansen | 66 | Head | — | Denmark |
| 22 | Eugene Snyder | 34 | Head | Truck Driver | Illinois |
| 23 | Mary V. Snyder | 27 | Wife | — | Illinois |
| 24 | John R. Snyder | 8 | Son | — | Illinois |
| 25 | Michael J. Snyder | 7 | Son | — | Illinois |
| 26 | Margaret A. Snyder | 5 | Daughter | — | Illinois |
| 27 | Eugene J. Snyder | 4 | Son | — | Illinois |
| 28 | James L. Snyder | 3 | Son | — | Illinois |
| 29 | John Ruddy | 75 | Uncle | — | Illinois |
| 30 | Agnes Duffy | 51 | Head | — | Illinois |
| 31 | Patricia A. Duffy | 19 | Daughter | — | Illinois |
| 32 | Margaret E. Duffy | 15 | Daughter | — | Illinois |
| 33 | John E. Duffy | 13 | Son | — | Illinois |
| 34 | Ellen Lannon | 86 | Mother | — | Illinois |
| 35 | J. D. Welch | 34 | Head | Agent | Illinois |
| 36 | Wilhelmine Welch | 33 | Wife | Teacher | Illinois |
| 37 | Catherine Welch | 64 | Mother | — | Illinois |
| 38 | James Downey | 79 | Cousin | — | Illinois |
| 39 | Ray Beck | 32 | Head | Carpenter | Illinois |
| 40 | Dorothy Beck | 32 | Wife | — | Illinois |
Pedigree Summary
John + 2 siblings
Gen 1 · 4 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)