JW
John Wolfe — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this John Wolfe across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents William & William — first a son (b.~1919), then head of a 4-person household.
Age 21
b. ~1919
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Wolfe |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | City of Cambridge |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Chauffer |
| Industry | Brass Supply Co |
| Class of Worker | PW |
| Hours Worked | 10 |
| Income (1939) | 195 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Chauffer |
| Township / Ward | City Of Cambridge |
| 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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| William Wolfe | Head | — | 54 | ~1886 |
| Mary Wolfe | Spouse | — | 53 | ~1887 |
| Margaret Wolfe | Daughter | — | 26 | ~1914 |
| John Wolfe | Son | — | 21 | ~1919 |
Census Appearances
1920
Middlesex, Massachusetts
Son, age 1
Middlesex, Massachusetts · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wolfe |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read | No |
| Can Write | No |
| Speaks English | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Son, age 11
Middlesex, Massachusetts · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wolfe |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 21
Middlesex-County, Massachusetts · implied b. ~1919 — 4 household members
| Surname | Wolfe |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | City of Cambridge |
| 1935 Residence (County) | Middlesex |
| Occupation | Chauffer |
| Industry | Brass Supply Co |
| Class of Worker | PW |
| Hours Worked | 10 |
| Income (1939) | 195 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 Wolfe across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Wolfe (~0.92 confidence) and father William Wolfe (~0.92 confidence) and mother Mary Wolfe (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Wolfe
b. ~1885
Source father
● Household
· direct · ~0.92
Father
William Wolfe
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Mary Wolfe
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Wolfe
Son · 1940 · age 21 · b. ~1919 · Massachusetts
★ You are viewing this record
Sibling
Margaret Wolfe
Sibling · 1940 · age 26
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 — Middlesex-County, Massachusetts
Open full size
1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01683-00595)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Louise Slavinsky | 60 | Head | — | Germany |
| 42 | Emile Slavinsky | 32 | Son | Stripper | Rhode Island |
| 43 | Raymond Slavinsky | 30 | Son | Pattern Cutter | Rhode Island |
| 44 | Peter Slavinsky | 25 | Son | — | Rhode Island |
| 45 | Elizabeth Mcquiggan | 53 | Head | — | Scotland |
| 46 | Isaac J Mcquiggan | 32 | Son | Core Maker | Scotland |
| 47 | Elizabeth M Mcquiggan | 29 | Daughter | Advertiser | Scotland |
| 48 | Thomas F Mcquiggan | 24 | Son | Delivery | Northern Ireland |
| 49 | Hannah Mckeown | 34 | Lodger | Packer | Scotland |
| 50 | William Wolfe | 54 | Head | Stevedore | Massachusetts |
| 51 | Mary Wolfe | 53 | Wife | — | Massachusetts |
| 52 | Margaret Wolfe | 26 | Daughter | File Clerk | Massachusetts |
| 53 | John Wolfe THIS PERSON | 21 | Son | Chauffer | Massachusetts |
| 54 | Nathan Weisman | 54 | Head | Tailor | Russia |
| 55 | Fanny Weisman | 49 | Wife | — | Massachusetts |
| 56 | Bernard Weisman | 23 | Son | Fruit Salesman | Massachusetts |
| 57 | Matthew Weisman | 21 | Son | Sales Clerk | Massachusetts |
| 58 | Sylvia Weisman | 19 | Daughter | Typist | Massachusetts |
| 59 | Beatrice Weisman | 16 | Daughter | — | Massachusetts |
| 60 | Ruth Weisman | 12 | Daughter | — | Massachusetts |
| 61 | Willard La Buff | 38 | Head | Shipper | Massachusetts |
| 62 | Viola La Buff | 38 | Wife | — | Massachusetts |
| 63 | Edith La Buff | 18 | Daughter | Packer | Massachusetts |
| 64 | George La Buff | 17 | Son | Newsworker | Massachusetts |
| 65 | Marion La Buff | 10 | Daughter | — | Massachusetts |
| 66 | Doris La Buff | 9 | Daughter | — | Massachusetts |
| 67 | Jeannette La Buff | 8 | Daughter | — | Massachusetts |
| 68 | John Jones | 64 | Father-in-Law | — | Massachusetts |
| 69 | Felix Rafanowicz | 50 | Head | Shipper | Poland |
| 70 | Agnes Rafanowicz | 48 | Wife | — | Poland |
| 71 | Charles Rafanowicz | 24 | Son | Sprayer | Massachusetts |
| 72 | John Rafanowicz | 23 | Son | Dough Mixer | Massachusetts |
| 73 | Felix Rafanowicz | 21 | Son | Drivers Helper | Massachusetts |
| 74 | Stanley Rafanowicz | 16 | Son | — | Massachusetts |
| 75 | Walter Reed | 29 | Head | Embalmer | Massachusetts |
| 76 | Doris Reed | 26 | Wife | Packer | Newfoundland |
| 77 | William T Dodd | 47 | Head | Foreman | New Jersey |
| 78 | Grace Dodd | 37 | Wife | — | New York |
| 79 | Earl Dodd | 8 | Son | — | New Jersey |
| 80 | William I Dodd | 5 | Son | — | Massachusetts |
Related Census Records
Pedigree Summary
John + 1 sibling
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)