JF
John Fox — 1940 US Census Record
Model Tree available1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this John Fox across the 1920, 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed), with identified parents John & Mary — first a son (b.~1918), then head of a 6-person household.
Age 22
b. ~1918
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Fox |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Highest Grade | C-4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston City |
| Est. Birth Year | ~1918 |
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 |
|---|---|---|---|---|
| Mary Fox | Daughter | — | 18 | ~1922 |
| Jane Fox | Daughter | — | 15 | ~1925 |
| Philip Fox | Head | — | 53 | ~1887 |
| Margaret Connell | Other | — | 51 | ~1889 |
| John Fox | Son | — | 22 | ~1918 |
| Grace Fox | Spouse | — | 51 | ~1889 |
Census Appearances
1920
Suffolk, Massachusetts
Son, age 2
Suffolk, Massachusetts · implied b. ~1918 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fox |
| Given Name | John D. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Suffolk, Massachusetts
Son, age 12
Suffolk, Massachusetts · implied b. ~1918 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fox |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| 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
Suffolk-County, Massachusetts
Son, age 22
Suffolk-County, Massachusetts · implied b. ~1918 — 6 household members
| Surname | Fox |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Highest Grade | C-4 |
| 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 Fox across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Fox (~0.92 confidence) and mother Mary Fox (~0.92 confidence) and father Peter Fox (~0.92 confidence) and father Philip Fox (~0.92 confidence) and mother Grace Fox (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Fox
b. ~1881
Source father
● Household
· direct · ~0.92
Mother
Mary Fox
b. ~1883
Source mother
● Household
· direct · ~0.92
Father
Peter Fox
b. ~1886
Source father
● Household
· direct · ~0.92
Father
Philip Fox
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Grace Fox
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Fox
Son · 1940 · age 22 · b. ~1918 · Massachusetts
★ You are viewing this record
Sibling
Mary Fox
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jane Fox
Sibling · 1940 · age 15
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 — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01676-00056)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Francis X Hanlon | 46 | Head | Supervisor | Massachusetts |
| 2 | Ethel A Hanlon | 46 | Wife | — | Massachusetts |
| 3 | Jean W Hanlon | 15 | Daughter | — | Massachusetts |
| 4 | Joseph A Cahalan | 57 | Head | Secretary | Massachusetts |
| 5 | Margaret E Cahalan | 55 | Wife | — | Massachusetts |
| 6 | Joseph M Cahalan | 23 | Son | Office Clerk | Massachusetts |
| 7 | George Wilson | 52 | Head | — | Eire |
| 8 | William Wilson | 35 | Son | Draftsman | Massachusetts |
| 9 | Margaret Wilson | 29 | Daughter | Social Worker | Massachusetts |
| 10 | Philip J Fox | 53 | Head | Assessor | Massachusetts |
| 11 | Grace M Fox | 51 | Wife | — | Massachusetts |
| 12 | John Fox THIS PERSON | 22 | Son | — | Massachusetts |
| 13 | Mary Fox | 18 | Daughter | — | Massachusetts |
| 14 | Jane Fox | 15 | Daughter | — | Massachusetts |
| 15 | Margaret T Connell | 51 | Sister-in-law | Office Clerk | Massachusetts |
| 16 | Merritt W Chamberlain | 42 | Head | Watchman | Maine |
| 17 | Mabel E Chamberlain | 36 | Wife | — | Canada-English |
| 18 | Mary E Chamberlain | 13 | Daughter | — | Massachusetts |
| 19 | Helen E Chamberlain | 10 | Daughter | — | Massachusetts |
| 20 | Margaret E Chamberlain | 8 | Daughter | — | Massachusetts |
| 21 | Frederick Chamberlain | 5 | Son | — | Massachusetts |
| 22 | Eleanor S Pader | 74 | Aunt | Cashier | Canada-English |
| 23 | Mary E Hardy | 68 | Mother-in-law | — | Canada-English |
| 24 | Nathan Blume | 55 | Head | Manager | Massachusetts |
| 25 | Rose Blume | 49 | Wife | — | Massachusetts |
| 26 | Edward B Blume | 25 | Son | Gas Salesman | Massachusetts |
| 27 | Adeline Blume | 22 | Daughter | Bookkeeper | Massachusetts |
| 28 | Lillian Blume | 20 | Daughter | Bookkeeper | Massachusetts |
| 29 | Evelyn Swett | 38 | Sister-in-law | Store Clerk | Massachusetts |
| 30 | Phyllis E Swett | 10 | Niece | — | Massachusetts |
| 31 | Mary E Quinn | 61 | Head | — | Massachusetts |
| 32 | David E Quinn | 43 | Son | Electrician | Massachusetts |
| 33 | J. Walter Quinn | 38 | Son | Salesman | Massachusetts |
| 34 | Leo W Burke | 41 | Son-in-law | Police Officer | Massachusetts |
| 35 | Isabel M Burke | 40 | Daughter | — | Massachusetts |
| 36 | Janet M Burke | 14 | Granddaughter | — | Massachusetts |
| 37 | George W Burke | 13 | Grandson | — | Massachusetts |
| 38 | David Burke | 9 | Grandson | — | Massachusetts |
| 39 | Barbara Burke | 5 | Granddaughter | — | Massachusetts |
| 40 | David Berg | 47 | Head | Salesman Traveling | Pennsylvania |
Pedigree Summary
John + 2 siblings
Gen 1 · 5 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)