JF
John Fox — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this John Fox across the 1910, 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Calvin & Sarah — first a head (b.~1898), then head of a 3-person household.
Age 42
b. ~1898
Male
Head
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | FOX |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Truck driver |
| Industry | Transfer Store |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 900 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Truck Driver |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1898 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Joan Fox | Daughter | — | 8 | ~1932 |
| John Fox | Head | — | 42 | ~1898 |
| Violet Fox | Spouse | — | 44 | ~1896 |
Census Appearances
1910
Allegheny, Pennsylvania
Son, age 11
Allegheny, Pennsylvania · implied b. ~1899 — 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 | 11 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Allegheny, Pennsylvania
Son, age 20
Allegheny, Pennsylvania · implied b. ~1900 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fox |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Laborer |
| Industry | Mill |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Other, age 31
Allegheny, Pennsylvania · implied b. ~1899 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fox |
| Given Name | John |
| Relationship to Head | Son-in-law |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 22 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Head, age 42
Allegheny-County, Pennsylvania · implied b. ~1898 — 3 household members
| Surname | FOX |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Occupation | Truck driver |
| Industry | Transfer Store |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 900 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Calvin Fox (~0.92 confidence) and mother Sarah Fox (~0.92 confidence) and father Damon Fox (~0.92 confidence) and mother Sarah Fox (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Calvin Fox
b. ~1862
Source father
● Household
· direct · ~0.92
Mother
Sarah Fox
b. ~1865
Source mother
● Household
· direct · ~0.92
Father
Damon Fox
b. ~1869
Source father
● Household
· direct · ~0.92
Mother
Sarah Fox
b. ~1870
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Fox
Head · 1940 · age 42 · b. ~1898 · Pennsylvania
★ 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 — Allegheny-County, Pennsylvania
Open full size
1940 US Federal Census — Allegheny-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03672-00883)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Anna Pavliusek | 40 | Wife | — | Pennsylvania |
| 42 | Matthew Pirsic | 54 | Head | Laborer | Yugoslavia |
| 43 | Emma Pirsic | 54 | Wife | — | Yugoslavia |
| 44 | Joseph Pirsic | 25 | Son | Laborer | Pennsylvania |
| 45 | Matthew Pirsic | 24 | Son | Repairman | Pennsylvania |
| 46 | Rudolph Pirsic | 19 | Son | Newsboy | Pennsylvania |
| 47 | Margaret Pirsic | 16 | Daughter | — | Pennsylvania |
| 48 | Mildred Pirsic | 14 | Daughter | — | Pennsylvania |
| 49 | John Fox THIS PERSON | 42 | Head | Truck Driver | Pennsylvania |
| 50 | Violet Fox | 44 | Wife | — | Pennsylvania |
| 51 | Joan Fox | 8 | Daughter | — | Pennsylvania |
| 52 | Eugene Walters | 49 | Head | Mill Wright | Pennsylvania |
| 53 | Elsa Walters | 44 | Wife | — | Sweden |
| 54 | George Walters | 15 | Son | — | Pennsylvania |
| 55 | David Blain | 46 | Head | Truck Driver | Pennsylvania |
| 56 | Grace Blain | 40 | Wife | — | Pennsylvania |
| 57 | Violet Blain | 19 | Daughter | New Worker | Pennsylvania |
| 58 | Mildred Blain | 17 | Daughter | New Worker | Pennsylvania |
| 59 | David Jr. Blain | 15 | Son | — | Pennsylvania |
| 60 | Elizabeth Blain | 12 | Daughter | — | Pennsylvania |
| 61 | William Miller | 61 | Head | Laborer | Germany |
| 62 | Clara Miller | 63 | Wife | — | Pennsylvania |
| 63 | John Selvak | 52 | Head | Laborer | Yugoslavia |
| 64 | Mary Selvak | 45 | Wife | — | Yugoslavia |
| 65 | John Jr. Selvak | 26 | Son | Laborer | Yugoslavia |
| 66 | Mary Selvak | 15 | Daughter | — | Pennsylvania |
| 67 | Charles Selvak | 13 | Son | — | Pennsylvania |
| 68 | Frances Selvak | 12 | Daughter | — | Pennsylvania |
| 69 | William Miller | 10 | Son | — | Pennsylvania |
| 70 | Clarence Miller | 22 | Son | Clerk | Pennsylvania |
| 71 | Margaret Miller | 21 | Wife | — | Pennsylvania |
| 72 | Carol Lee Miller | 2 | Daughter | — | Pennsylvania |
| 73 | — | None | — | — | — |
| 74 | — | None | — | — | — |
| 75 | Anna Francis | 53 | Head | — | Yugoslavia |
| 76 | George Francis | 26 | Son | Laborer | Pennsylvania |
| 77 | Anna Francis | 24 | Daughter | Medical Stenog. | Pennsylvania |
| 78 | Edward Francis | 21 | Son | Laborer | Pennsylvania |
| 79 | Boraslaw Francis | 20 | Son | Copy Boy | Pennsylvania |
| 80 | Olga Francis | 18 | Daughter | — | Pennsylvania |
Pedigree Summary
John
Gen 1 · 4 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)