JW
John Wolf — 1940 US Census Record
Model Tree available1940 United States Federal Census · Effingham-County, Illinois
Our Model Tree links this John Wolf across the 1920, 1930 and 1940 US Censuses in Effingham-County, Illinois (XGBoost, ~Confirmed), with identified parents August & Henriette — first a head (b.~1899), then head of a 6-person household.
Age 41
b. ~1899
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Effingham-County, Illinois |
| Surname | Wolf |
| Given Name | John A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Mound Township |
| 1935 Residence (County) | Effingham |
| Additional Details | |
| Occupation | Farming |
| Industry | Agriculture |
| Class of Worker | OA |
| Hours Worked | 24 |
| Income (1939) | 452 |
| Highest Grade | 8 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Farming |
| Township / Ward | Mound Township |
| Est. Birth Year | ~1899 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| John Wolf | Head | — | 41 | ~1899 |
| Harold Wolf | Son | — | 12 | ~1928 |
| Alvin Wolf | Son | — | 14 | ~1926 |
| Erhard Wolf | Son | — | 11 | ~1929 |
| Delbert Wolf | Son | — | 3 | ~1937 |
| Frieda Wolf | Spouse | — | 41 | ~1899 |
Census Appearances
1920
Effingham, Illinois
Son, age 18
Effingham, Illinois · implied b. ~1902 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wolf |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Farm Labor |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Effingham, Illinois
Other, age 30
Effingham, Illinois · implied b. ~1900 — 45 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wolf |
| Given Name | John A. |
| Relationship to Head | R |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 24 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Effingham-County, Illinois
Head, age 41
Effingham-County, Illinois · implied b. ~1899 — 6 household members
| Surname | Wolf |
| Given Name | John A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Mound Township |
| 1935 Residence (County) | Effingham |
| Occupation | Farming |
| Industry | Agriculture |
| Class of Worker | OA |
| Hours Worked | 24 |
| Income (1939) | 452 |
| Highest Grade | 8 |
| 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 Wolf across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father August Wolff (~0.82 confidence) and mother Henriette Wolff (~0.82 confidence) and father August Wolf (~0.92 confidence) and mother Minnie Wolf (~0.92 confidence). The pedigree spans 2 generations with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.87
Father
August Wolff
b. ~1823
Source father>father
● Household
· direct · ~0.82
Mother
Henriette Wolff
b. ~1823
Source father>mother
● Household
· direct · ~0.82
Father
August Wolf
b. ~1862
Source father
● Household
· direct · ~0.92
Mother
Minnie Wolf
b. ~1870
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Wolf
Head · 1940 · age 41 · b. ~1899 · Illinois
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Effingham-County, Illinois
Open full size
1940 US Federal Census — Effingham-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00800-00483)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Hilda Frohninghaus | 43 | Wife | — | Illinois |
| 2 | Albert Frohninghaus | 14 | Son | — | Illinois |
| 3 | Gordon Frohninghaus | 10 | Son | — | Illinois |
| 4 | Fanny Roehl | 50 | Head | — | Illinois |
| 5 | Virginia Roehl | 18 | Daughter | — | Illinois |
| 6 | Yvonne Roehl | 16 | Daughter | — | Illinois |
| 7 | Colleen Roehl | 12 | Daughter | — | Illinois |
| 8 | Edamine Roehl | 9 | Daughter | — | Illinois |
| 9 | Patsy Roehl | 5 | Daughter | — | Illinois |
| 10 | George W. Grant | 40 | Head | Laborer | Illinois |
| 11 | Naomi Grant | 39 | Wife | — | Illinois |
| 12 | Dorothy Grant | 15 | Daughter | — | Illinois |
| 13 | John A. Wolf THIS PERSON | 41 | Head | Farming | Illinois |
| 14 | Frieda Wolf | 41 | Wife | — | Illinois |
| 15 | Alvin Wolf | 14 | Son | — | Illinois |
| 16 | Harold Wolf | 12 | Son | — | Illinois |
| 17 | Erhard Wolf | 11 | Son | — | Illinois |
| 18 | Delbert Wolf | 3 | Son | — | Illinois |
| 19 | C. F. Hoffmeister | 91 | Head | — | Germany |
| 20 | William Hoffmeister | 65 | Son | Farming | Illinois |
| 21 | John Hoffmeister | 55 | Son | Farming | Illinois |
| 22 | Bertha Hoffmeister | 51 | Daughter | — | Illinois |
| 23 | Edwin Stremke | 30 | Head | Farming | Illinois |
| 24 | Gertrude Stremke | 25 | Wife | — | Illinois |
| 25 | John Alwerdt | 73 | Head | Farming | Illinois |
| 26 | Martha Alwerdt | 61 | Wife | — | Illinois |
| 27 | Guy Bernahl | 53 | Head | Farming | Illinois |
| 28 | Theodora Bernahl | 50 | Wife | — | Illinois |
| 29 | Reinhardt Bernahl | 15 | Son | — | Illinois |
| 30 | Allel Bernahl | 12 | Daughter | — | Illinois |
| 31 | Ernest Tappendorf | 47 | Head | Farming | Illinois |
| 32 | Alma Tappendorf | 50 | Wife | — | Illinois |
| 33 | William A. Tappendorf | 20 | Son | Laborer | Illinois |
| 34 | Hildegard Tappendorf | 16 | Daughter | — | Illinois |
| 35 | Lorence Tappendorf | 15 | Son | — | Illinois |
| 36 | Eldon Tappendorf | 9 | Son | — | Illinois |
| 37 | Martin Bernahl | 46 | Head | Farming | Illinois |
| 38 | Marie Bernahl | 47 | Wife | — | Illinois |
| 39 | Louis A. Bernahl | 22 | Son | Laborer | Illinois |
| 40 | Harry Bernahl | 9 | Son | — | Illinois |
Pedigree Summary
John
Gen 1 · 2 parents
~0.92
Gen 2 · 2 grandparents
~0.81
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)