JC
James Cox — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this James Cox across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Mary — first a son (b.~1907), then head of a 3-person household.
Age 33
b. ~1907
Male
Son
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Cox |
| Given Name | James G. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | lineman |
| Industry | Telephone Co |
| Class of Worker | PW |
| Hours Worked | 41 |
| Income (1939) | 2400 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Lineman |
| Township / Ward | Pittsburgh City |
| Est. Birth Year | ~1907 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| Mary Cox | Head | — | 64 | ~1876 |
| Mary Cox | Other | — | 30 | ~1910 |
| James Cox | Son | — | 33 | ~1907 |
Census Appearances
1920
Allegheny, Pennsylvania
Other, age 12
Allegheny, Pennsylvania · implied b. ~1908 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cox |
| Given Name | James |
| Relationship to Head | Inmate |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Other, age 23
Allegheny, Pennsylvania · implied b. ~1907 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cox |
| Given Name | James A. |
| Relationship to Head | Nephew |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Son, age 33
Allegheny-County, Pennsylvania · implied b. ~1907 — 3 household members
| Surname | Cox |
| Given Name | James G. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Occupation | lineman |
| Industry | Telephone Co |
| Class of Worker | PW |
| Hours Worked | 41 |
| Income (1939) | 2400 |
| Highest Grade | H 4 |
| 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 James Cox across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Mary Cox (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mary Cox
b. ~1876
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Cox
Son · 1940 · age 33 · b. ~1907 · 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-t0627-03656-00537)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Walter Bogler | 32 | Head | Checker | Pennsylvania |
| 2 | Margaret Bogler | 30 | Wife | — | Pennsylvania |
| 3 | Marjorie Bogler | 7 | Daughter | — | Pennsylvania |
| 4 | Mary Cox | 64 | Head | — | Pennsylvania |
| 5 | James G. Cox THIS PERSON | 33 | Son | Lineman | Pennsylvania |
| 6 | Mary B. Cox | 30 | Daughter-in-law | Cashier | Pennsylvania |
| 7 | Anna Gurneck | 38 | Head | Clerk | Pennsylvania |
| 8 | Amelia Gurneck | 35 | Lodger | Book Keeper | Pennsylvania |
| 9 | Margaret Gurneck | 32 | Lodger | — | Pennsylvania |
| 10 | George Grove | 58 | Head | Baker | Pennsylvania |
| 11 | Martha Grove | 36 | Wife | — | Pennsylvania |
| 12 | William Grove | 36 | Son | Investigator | Pennsylvania |
| 13 | Albert Schener | 62 | Head | Cashier | Pennsylvania |
| 14 | Madeline Schener | 63 | Wife | — | Pennsylvania |
| 15 | Mary Fetzer | 42 | Lodger | Nurse | Pennsylvania |
| 16 | John B. Culbertson | 61 | Head | Cashier | Iowa |
| 17 | Howard Synd | 25 | Head | — | Pennsylvania |
| 18 | Anne Synd | 24 | Wife | — | Pennsylvania |
| 19 | Patricia Synd | 4 | Daughter | — | Pennsylvania |
| 20 | Richard Synd | 5 | Son | — | Pennsylvania |
| 21 | William R. Freeman | 33 | Head | Mechanic | Pennsylvania |
| 22 | Gladys Freeman | 33 | Wife | — | Pennsylvania |
| 23 | Lois Freeman | 13 | Daughter | — | Pennsylvania |
| 24 | Jacqueline Freeman | 12 | Daughter | — | Pennsylvania |
| 25 | Robert Henig | 47 | Head | Surveyor | Pennsylvania |
| 26 | Amelia Henig | 45 | Wife | — | Pennsylvania |
| 27 | Shirley J. Henig | 15 | Daughter | — | New York |
| 28 | Wilbert Freeman | 71 | Father-in-law | — | Pennsylvania |
| 29 | John A. Cannon | 49 | Head | Nurse | Georgia |
| 30 | Anne Cannon | 46 | Sister | Nurse | Georgia |
| 31 | Mary Cannon | 44 | Sister | Stockman | Georgia |
| 32 | David Echat | 41 | Head | Geometrist | Pennsylvania |
| 33 | Jane Echat | 39 | Wife | Packer-Room | Pennsylvania |
| 34 | Howard Klaus | 37 | Head | — | Pennsylvania |
| 35 | Eleanore Klaus | 35 | Wife | — | Pennsylvania |
| 36 | Howard Jr. Klaus | 2 | Son | — | Pennsylvania |
| 37 | Israel Ginsberg | 41 | Head | Salesman | Russia |
| 38 | Gertrude Ginsberg | 38 | Wife | — | Hungary |
| 39 | Annette Ginsberg | 12 | Daughter | — | Pennsylvania |
| 40 | Jerome Ginsberg | 9 | Son | — | Pennsylvania |
Pedigree Summary
James
Gen 1 · 1 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)