HW
Harry Wolf — 1940 US Census Record
Model Tree available1940 United States Federal Census · Mchenry-County, Illinois
Our Model Tree links this Harry Wolf across the 1920, 1930 and 1940 US Censuses in Mchenry-County, Illinois (XGBoost, ~Confirmed), with identified parents Albert & Anna — first a head (b.~1901), then head of a 3-person household.
Age 39
b. ~1901
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Mchenry-County, Illinois |
| Surname | Wolf |
| Given Name | Harry O. A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Marengo city |
| 1935 Residence (County) | McHenry |
| Additional Details | |
| Occupation | Barber-Owner |
| Industry | Barber Shop |
| Class of Worker | E |
| Hours Worked | 54 |
| Income (1939) | 700 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Barber-Owner |
| Township / Ward | Marengo City |
| Est. Birth Year | ~1901 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Harry | Age | Birth yr |
|---|---|---|---|---|
| Helen Wolf | Spouse | — | 27 | ~1913 |
| Harry Wolf | Head | — | 39 | ~1901 |
| Harry Wolf | Son | — | 2 | ~1938 |
Census Appearances
1920
Mchenry, Illinois
Son, age 21
Mchenry, Illinois · implied b. ~1899 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wolf |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Pomerania |
| Mother's Birthplace | Pomerania |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Mchenry, Illinois
Son, age 31
Mchenry, Illinois · implied b. ~1899 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wolf |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Barber |
| Industry | Barber Shop |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Mchenry-County, Illinois
Head, age 39
Mchenry-County, Illinois · implied b. ~1901 — 3 household members
| Surname | Wolf |
| Given Name | Harry O. A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Marengo city |
| 1935 Residence (County) | McHenry |
| Occupation | Barber-Owner |
| Industry | Barber Shop |
| Class of Worker | E |
| Hours Worked | 54 |
| Income (1939) | 700 |
| Highest Grade | No 8 |
| 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 Harry Wolf across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Albert Wolf (~0.92 confidence) and mother Anna 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
Albert Wolf
b. ~1864
Source father
● Household
· direct · ~0.92
Mother
Anna Wolf
b. ~1867
Source mother
● Household
· direct · ~0.92
Mother
Anna Wolf
b. ~1865
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harry Wolf
Head · 1940 · age 39 · b. ~1901 · 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 — Mchenry-County, Illinois
Open full size
1940 US Federal Census — Mchenry-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00840-00935)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Marjorie Bremer, Harvey | 27 | Wife | — | Illinois |
| 2 | Kay Joan Bremer, Harvey | 1 | Daughter | — | Illinois |
| 3 | George E. Renwick | 25 | Head | Proprietor | Illinois |
| 4 | Laura H. Renwick | 24 | Wife | — | Illinois |
| 5 | Emma W. Reinert | 46 | Head | — | Illinois |
| 6 | Caroline Reinert | 12 | Daughter | — | Illinois |
| 7 | John Reinert | 11 | Son | — | Illinois |
| 8 | Norman Theodore Reinert | 37 | Brother | — | Illinois |
| 9 | William R. Fritz | 64 | Head | Janitor | Illinois |
| 10 | Leonora Fritz | 64 | Wife | — | Illinois |
| 11 | David M. Kearney | 47 | Head | Plasterer | Illinois |
| 12 | Clara M. Kearney | 38 | Wife | — | Illinois |
| 13 | Sydney R. Kearney | 19 | Son | — | Illinois |
| 14 | Richard C. Kearney | 17 | Son | — | Illinois |
| 15 | Anna M. Wolf | 74 | Head | — | Germany |
| 16 | Amanda M. Stoffer | 31 | Daughter | Saleslady | Illinois |
| 17 | Nora M. Sassman | 66 | Head | — | Illinois |
| 18 | Edith C. Sassman | 36 | Daughter | Bookkeeper | Illinois |
| 19 | Blanche H. Sassman | 27 | Daughter | Bookkeeper | Illinois |
| 20 | Herman J. Boehmke | 60 | Head | Yard Handler | Germany |
| 21 | Minnie N. Boehmke | 46 | Wife | — | Illinois |
| 22 | Donald Boehmke | 21 | Son | — | Illinois |
| 23 | Loretta Boehmke | 20 | Daughter | Stenographer | Illinois |
| 24 | Edward B. Ettner | 43 | Head | Truckdriver | Illinois |
| 25 | Olie Ettner | 41 | Wife | — | Illinois |
| 26 | Joan Ettner | 9 | Daughter | — | Illinois |
| 27 | Edward J. Mckeown | 54 | Head | Locomotive Engineer | Illinois |
| 28 | Minnie M. Mckeown | 55 | Wife | — | Illinois |
| 29 | William Deak | 68 | Brother-in-law | — | Illinois |
| 30 | Harry O. A. Wolf THIS PERSON | 39 | Head | Barber-Owner | Illinois |
| 31 | Helen A. Wolf | 27 | Wife | — | Illinois |
| 32 | Harry Jr. Wolf | 2 | Son | — | Illinois |
| 33 | Delmer C. Woodruff | 52 | Head | Planing Room Foreman | Ohio |
| 34 | Nellie Woodruff | 48 | Wife | — | Illinois |
| 35 | Ellsworth Woodruff | 24 | Son | Polisher | Illinois |
| 36 | Robert Woodruff | 18 | Son | Electrician Appr. | Illinois |
| 37 | Douglas Woodruff | 16 | Son | — | Illinois |
| 38 | Minnie Burke | 79 | Head | — | Illinois |
| 39 | Fred R. Phillips | 65 | Head | — | Illinois |
| 40 | Caroline Phillips | 56 | Sister-in-law | — | Illinois |
Pedigree Summary
Harry
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 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)