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John Cox — 1940 US Census Record
Model Tree available1940 United States Federal Census · Delaware-County, Pennsylvania
Our Model Tree links this John Cox across the 1920, 1930 and 1940 US Censuses in Delaware-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Sarah & Arthur — first a son (b.~1911), then head of a 4-person household.
Age 29
b. ~1911
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Delaware-County, Pennsylvania |
| Surname | Cox |
| Given Name | John C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Glenolden |
| 1935 Residence (County) | Delaware |
| Additional Details | |
| Occupation | Truck Driver |
| Industry | Florist |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 432 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Truck Driver |
| Township / Ward | Glenolden |
| Est. Birth Year | ~1911 |
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 |
|---|---|---|---|---|
| Arthur Cox | Head | — | 66 | ~1874 |
| Arthur Cox | Son | — | 35 | ~1905 |
| John Cox | Son | — | 29 | ~1911 |
| Sarah Cox | Spouse | — | 66 | ~1874 |
Census Appearances
1920
Delaware, Pennsylvania
Son, age 9
Delaware, Pennsylvania · implied b. ~1911 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cox |
| Given Name | John E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Delaware, Pennsylvania
Son, age 19
Delaware, Pennsylvania · implied b. ~1911 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cox |
| Given Name | John E. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Chauffeur |
| Industry | Private family |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Delaware-County, Pennsylvania
Son, age 29
Delaware-County, Pennsylvania · implied b. ~1911 — 4 household members
| Surname | Cox |
| Given Name | John C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Glenolden |
| 1935 Residence (County) | Delaware |
| Occupation | Truck Driver |
| Industry | Florist |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 432 |
| Highest Grade | H 2 |
| 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 Cox across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Sarah Cox (~0.92 confidence) and father Arthur Cox (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Sarah Cox
b. ~1873
Source mother
● Household
· direct · ~0.92
Father
Arthur Cox
b. ~1874
Source father
● Household
· direct · ~0.92
This person
Anchor record
John Cox
Son · 1940 · age 29 · b. ~1911 · Pennsylvania
★ You are viewing this record
Sibling
Arthur Cox
Sibling · 1940 · age 35
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 — Delaware-County, Pennsylvania
Open full size
1940 US Federal Census — Delaware-County, Pennsylvania
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-03491-00416)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Gertrude Larrimore | 37 | Wife | — | Pennsylvania |
| 42 | Sydney P. Larrimore | 17 | Son | — | Pennsylvania |
| 43 | Gertrude Larrimore | 13 | Daughter | — | Pennsylvania |
| 44 | Dolores Larrimore | 9 | Daughter | — | Pennsylvania |
| 45 | Arthur Cox | 66 | Head | — | England |
| 46 | Sarah E. Cox | 66 | Wife | — | England |
| 47 | Arthur D. Cox | 35 | Son | Bar Tender | Pennsylvania |
| 48 | John C. Cox THIS PERSON | 29 | Son | Truck Driver | Pennsylvania |
| 49 | Raymond Rhodes | 30 | Head | Yard Man | Pennsylvania |
| 50 | Grace E. Rhodes | 28 | Wife | — | Pennsylvania |
| 51 | Murray Forbes | 34 | Head | Coal Merchant | Pennsylvania |
| 52 | Margaret E. Forbes | 36 | Wife | — | Pennsylvania |
| 53 | Murray Jr. Forbes | 12 | Son | — | Pennsylvania |
| 54 | Nancy Forbes | 9 | Daughter | — | Pennsylvania |
| 55 | Herbert Openshaw | 41 | Head | Salesman | New Jersey |
| 56 | Rose D. Openshaw | 40 | Wife | — | Pennsylvania |
| 57 | Elinor Openshaw | 20 | Daughter | — | Pennsylvania |
| 58 | Albert Openshaw | 19 | Son | — | Pennsylvania |
| 59 | Betty Jane Openshaw | 14 | Daughter | — | Pennsylvania |
| 60 | William Openshaw | 13 | Son | — | Pennsylvania |
| 61 | Joseph Mccay | 54 | Head | Night Foreman | Pennsylvania |
| 62 | Anna Mccay | 52 | Wife | — | Pennsylvania |
| 63 | Harry Dick Mccay | 19 | Son | Errand Boy | Pennsylvania |
| 64 | Birdie M. B. Gambrill | 45 | Head | — | Maryland |
| 65 | Stewart W. Gambrill | 21 | Son | Stock Clerk | Maryland |
| 66 | Richard Gambrill | 23 | Son | Private Secretary | Maryland |
| 67 | Joseph B. Inge | 40 | Head | Insurance Agent | Virginia |
| 68 | Wilmot S. Inge | 38 | Wife | Secretary | Pennsylvania |
| 69 | William Smedley | 80 | Father-in-law | — | Pennsylvania |
| 70 | Mary B. Smedley | 70 | Mother-in-law | — | Pennsylvania |
| 71 | Thomas O'Connor | 46 | Head | Office Clerk | Pennsylvania |
| 72 | Rose M. O'Connor | 35 | Wife | — | Ohio |
| 73 | Thomas Jr. O'Connor | 15 | Son | — | Pennsylvania |
| 74 | Paul G. O'Connor | 13 | Son | — | Pennsylvania |
| 75 | Raymond O'Connor | 12 | Daughter | — | Pennsylvania |
| 76 | George E. O'Connor | 8 | Son | — | Pennsylvania |
| 77 | Priscilla A. O'Connor | 3 | Daughter | — | Pennsylvania |
| 78 | William C. Purdy | 53 | Head | Partner | Pennsylvania |
| 79 | Marie D. Purdy | 45 | Wife | — | Pennsylvania |
Related Census Records
Pedigree Summary
John + 1 sibling
Gen 1 · 2 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)