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 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents John & Ida — first a son (b.~1896), then head of a 4-person household.
Age 44
b. ~1896
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Fox |
| Given Name | John E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Crafton Borough |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Salesman |
| Industry | Men's Clothing |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 1800 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Salesman |
| Township / Ward | Crafton Borough |
| Est. Birth Year | ~1896 |
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 |
|---|---|---|---|---|
| Mary Fox | Daughter | — | 43 | ~1897 |
| Mary Fox | Head | — | 64 | ~1876 |
| Edward Fox | Son | — | 18 | ~1922 |
| John Fox | Son | — | 44 | ~1896 |
Census Appearances
1920
Allegheny, Pennsylvania
Son, age 21
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 | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | England |
| Mother's Birthplace | Pennsylvania |
| Occupation | Laborer |
| Industry | Glass House |
| 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
Son, age 33
Allegheny, Pennsylvania · implied b. ~1897 — 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 | 33 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Laborer |
| Industry | Steel Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Son, age 44
Allegheny-County, Pennsylvania · implied b. ~1896 — 4 household members
| Surname | Fox |
| Given Name | John E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Crafton Borough |
| 1935 Residence (County) | Allegheny |
| Occupation | Salesman |
| Industry | Men's Clothing |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 1800 |
| 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 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 Ida Fox (~0.92 confidence) and mother Mary Fox (~0.92 confidence) and mother Olive Fox (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Fox
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Ida Fox
b. ~1875
Source mother
● Household
· direct · ~0.92
Mother
Mary Fox
b. ~1876
Source mother
● Household
· direct · ~0.92
Mother
Olive Fox
b. ~1877
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Fox
Son · 1940 · age 44 · b. ~1896 · Pennsylvania
★ You are viewing this record
Sibling
Edward Fox
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Fox
Sibling · 1940 · age 43
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 — Allegheny-County, Pennsylvania
Open full size
1940 US Federal Census — Allegheny-County, Pennsylvania
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-03401-00461)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Silas C. Farrar | 65 | Head | — | Pennsylvania |
| 2 | Harriet Doyle | 65 | Head | Clerk | Pennsylvania |
| 3 | Jeanette Doyle | 60 | Sister | Stenographer | Pennsylvania |
| 4 | H. L. Wilson | 69 | Head | Caterer | Ohio |
| 5 | Carrie M. Wilson | 66 | Wife | — | Ohio |
| 6 | John Dellenbach | 52 | Head | Artist | Pennsylvania |
| 7 | Elsie Dellenbach | 47 | Wife | — | Pennsylvania |
| 8 | James Dellenbach | 23 | Son | Truck Driver | Pennsylvania |
| 9 | Grace Dodson | 55 | Head | Practical Nurse | Michigan |
| 10 | Mary A. Fox | 64 | Head | — | Pennsylvania |
| 11 | John E. Fox THIS PERSON | 44 | Son | Salesman | Pennsylvania |
| 12 | Mary M. Fox | 43 | Daughter | — | Pennsylvania |
| 13 | Edward L. Fox | 18 | Son | New Worker | Pennsylvania |
| 14 | Wm. T. Carnes | 65 | Head | — | Pennsylvania |
| 15 | Beulah Carnes | 63 | Wife | — | Ohio |
| 16 | Elsie Carnes | 27 | Daughter | — | Pennsylvania |
| 17 | C. N. Mcknight | 53 | Head | Draftsman | Mass. |
| 18 | Roberta Mcknight | 53 | Wife | — | Pennsylvania |
| 19 | Jas. C. Mcknight | 15 | Son | — | Pennsylvania |
| 20 | Emma C. Smith | 74 | Mother-in-law | — | Pennsylvania |
| 21 | Peter C. Karn | 47 | Head | Overseer | Pennsylvania |
| 22 | Emily H. Karn | 45 | Wife | — | Pennsylvania |
| 23 | Mary Jean Karn | 10 | Daughter | — | Pennsylvania |
| 24 | J. Frank Waters | 26 | Head | Sales Engineer | Pennsylvania |
| 25 | Betty Waters | 25 | Wife | Social Worker | Wyoming |
| 26 | Jas. D. Langdon | 58 | Head | Inspector | Pennsylvania |
| 27 | Rose D. Langdon | 52 | Wife | — | Kentucky |
| 28 | Bruce Langdon | 31 | Daughter | Teacher | Pennsylvania |
| 29 | Stella Lyons | 65 | Head | Clerk | Pennsylvania |
| 30 | Ella Riley | 62 | Cousin | — | Pennsylvania |
| 31 | Ruben D. Crabbe | 50 | Head | Clerk | Indiana |
| 32 | Carrie A. Crabbe | 42 | Wife | — | Pennsylvania |
| 33 | Donald Crabbe | 22 | Son | — | Pennsylvania |
| 34 | William B. Crabbe | 18 | Son | — | Pennsylvania |
| 35 | Carol Jean Crabbe | 15 | Daughter | — | Pennsylvania |
| 36 | J. H. Milonguist | 39 | Head | Yardmaster | Pennsylvania |
| 37 | Hazel Milonguist | 38 | Wife | — | Colorado |
| 38 | Della M. Milonguist | 18 | Daughter | — | Pennsylvania |
| 39 | Susan Nelson | 54 | Head | Saleslady | Pennsylvania |
Pedigree Summary
John + 2 siblings
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)