RW
Robert Wolf — 1940 US Census Record
Model Tree available1940 United States Federal Census · Waukesha-County, Wisconsin
Our Model Tree links this Robert Wolf across the 1910, 1920, 1930 and 1940 US Censuses in Waukesha-County, Wisconsin (XGBoost, ~Confirmed), with identified parents Andrew & Frank — first a son (b.~1906), then head of a 4-person household.
Age 34
b. ~1906
Male
Son
Born: Wisconsin
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Waukesha-County, Wisconsin |
| Surname | Wolf |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Waukesha City |
| 1935 Residence (County) | Waukesha |
| Additional Details | |
| Occupation | Pinboy |
| Industry | Bowling Alley |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 200 |
| Highest Grade | H-3 |
| 1935 Residence | Same place |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Occupation | Pinboy |
| Township / Ward | Waukesha City |
| Est. Birth Year | ~1906 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Nellie Wolf | Spouse | — | 60 | ~1880 |
| Harold Wolf | Son | — | 36 | ~1904 |
| Robert Wolf | Son | — | 34 | ~1906 |
| Frank Wolf | Head | — | 61 | ~1879 |
Census Appearances
1910
Waukesha, Wisconsin
Son, age 4
Waukesha, Wisconsin · implied b. ~1906 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wolf |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Wisconsin |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1920
Waukesha, Wisconsin
Son, age 14
Waukesha, Wisconsin · implied b. ~1906 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wolf |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Wales |
| Occupation | Laborer |
| Industry | Cutting machine |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Welsh |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1930
Waukesha, Wisconsin
Son, age 24
Waukesha, Wisconsin · implied b. ~1906 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wolf |
| Given Name | Robert |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Age at First Marriage | 24 |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Wales |
| Occupation | Concrete worker |
| Industry | Welf Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Waukesha-County, Wisconsin
Son, age 34
Waukesha-County, Wisconsin · implied b. ~1906 — 4 household members
| Surname | Wolf |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Waukesha City |
| 1935 Residence (County) | Waukesha |
| Occupation | Pinboy |
| Industry | Bowling Alley |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 200 |
| Highest Grade | H-3 |
| 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 Robert Wolf across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Andrew Wolf (~0.92 confidence) and father Frank Wolf (~0.92 confidence) and mother Nellie Wolf (~0.92 confidence) and mother Nellie Wolf (~0.92 confidence) and mother Nellie Wolf (~0.92 confidence) and mother Tillie Wolf (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Andrew Wolf
b. ~1872
Source father
● Household
· direct · ~0.92
Father
Frank Wolf
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Nellie Wolf
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Nellie Wolf
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Nellie Wolf
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Tillie Wolf
b. ~1876
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Wolf
Son · 1940 · age 34 · b. ~1906 · Wisconsin
★ You are viewing this record
Sibling
Harold Wolf
Sibling · 1940 · age 36
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 — Waukesha-County, Wisconsin
Open full size
1940 US Federal Census — Waukesha-County, Wisconsin
Page Contents
37 people indexed on this census page (nara:1940:m-t0627-04534-00704)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 3 | Vernon Megraw|Negraw | 37 | Head | Machinist | Wisconsin |
| 4 | Emily Megraw|Negraw | 39 | Wife | — | Wisconsin |
| 5 | Roderick Megraw|Negraw | 16 | Son | Paper Route | Wisconsin |
| 6 | Leona Megraw|Negraw | 14 | Daughter | — | Wisconsin |
| 7 | Lorraine Megraw|Negraw | 11 | Daughter | — | Wisconsin |
| 8 | Phyllis Megraw|Negraw | 9 | Daughter | — | Wisconsin |
| 9 | Arthur Rahn | 37 | Head | Principal | Wisconsin |
| 10 | Beryl Rahn | 33 | Wife | — | Wisconsin |
| 11 | Arthur Jr. Rahn | 5 | Son | — | Wisconsin |
| 12 | Bradley Rahn | 2 | Son | — | Wisconsin |
| 13 | William Koehler | 56 | Head | County Clerk | Wisconsin |
| 14 | Clara Koehler | 52 | Wife | — | Wisconsin |
| 15 | Franklin Koehler | 16 | Son | — | Wisconsin |
| 16 | John Koehler | 12 | Son | — | Wisconsin |
| 17 | Michael Schober | 60 | Head | Garageman | Germany |
| 18 | Norma Schober | 40 | Wife | — | Wisconsin |
| 19 | Jack Schober | 21 | Son | — | Wisconsin |
| 20 | Albert Schober | 20 | Son | Apprentice | Wisconsin |
| 21 | Robert Schober | 16 | Son | Paper Route | Wisconsin |
| 22 | Norma Jean Schober | 7 | Daughter | — | Wisconsin |
| 24 | John Harter | 40 | Head | Assembler | Wisconsin |
| 25 | Agnes Harter | 40 | Wife | — | Wisconsin |
| 26 | Dallas|Hallam Harter | 16 | Son | — | Wisconsin |
| 27 | Sally Harter | 3 | Daughter | — | Wisconsin |
| 28 | Edwin Muehl | 59 | Head | Groceryman | Wisconsin |
| 29 | Emma Muehl | 54 | Wife | — | Wisconsin |
| 30 | Mayne Roach | 68 | Head | — | Wisconsin |
| 31 | John Roach | 66 | Brother | Caretaker | Wisconsin |
| 32 | James Roach | 56 | Brother | — | Wisconsin |
| 33 | Thomas Roberts | 50 | Head | Grocery Clerk | Wisconsin |
| 34 | Ida Roberts | 50 | Wife | — | Wisconsin |
| 35 | Virginia Roberts | 21 | Daughter | — | Wisconsin |
| 36 | Norma Kunz | 48 | Sister-in-law | — | Wisconsin |
| 37 | Frank Wolf | 61 | Head | Brakeman | Wisconsin |
| 38 | Nellie Wolf | 60 | Wife | — | Great Britain |
| 39 | Harold Wolf | 36 | Son | Laborer | Wisconsin |
| 40 | Robert Wolf THIS PERSON | 34 | Son | Pinboy | Wisconsin |
Related Census Records
Pedigree Summary
Robert + 1 sibling
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)