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John Bradley — 1940 US Census Record
Model Tree available1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this John Bradley across the 1920, 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Charles & Mary — first a son (b.~1905), then head of a 3-person household.
Age 35
b. ~1905
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Bradley |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Phila |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Est. Birth Year | ~1905 |
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 |
|---|---|---|---|---|
| Charles Bradley | Head | — | 61 | ~1879 |
| John Bradley | Son | — | 35 | ~1905 |
| Mary Bradley | Spouse | — | 60 | ~1880 |
Census Appearances
1920
Philadelphia, Pennsylvania
Other, age 11
Philadelphia, Pennsylvania · implied b. ~1909 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bradley |
| Given Name | John |
| Relationship to Head | Nephew |
| 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 |
1930
Philadelphia, Pennsylvania
Other, age 23
Philadelphia, Pennsylvania · implied b. ~1907 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bradley |
| Given Name | John |
| Relationship to Head | Brother-in-law |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Machinist |
| Industry | Monotype |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Philadelphia-County, Pennsylvania
Son, age 35
Philadelphia-County, Pennsylvania · implied b. ~1905 — 3 household members
| Surname | Bradley |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Phila |
| 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 Bradley across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Charles Bradley (~0.92 confidence) and mother Mary Bradley (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charles Bradley
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Mary Bradley
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Bradley
Son · 1940 · age 35 · b. ~1905 · 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 — Philadelphia-County, Pennsylvania
Open full size
1940 US Federal Census — Philadelphia-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03730-00479)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Julia Glabe | 38 | Head | Cigar Maker | Lithuania |
| 42 | Julia Glabe | 17 | Daughter | New Worker | Pennsylvania |
| 43 | Mary D Laughlin | 40 | Head | — | Lithuania |
| 44 | Marie Laughlin | 18 | Daughter | New Worker | Pennsylvania |
| 45 | Margaret Laughlin | 15 | Daughter | — | Pennsylvania |
| 46 | Daniel Laughlin | 13 | Son | — | Pennsylvania |
| 47 | Nancy Laughlin | 10 | Daughter | — | Pennsylvania |
| 48 | Sally Laughlin | 6 | Daughter | — | Pennsylvania |
| 49 | William Dubbritz | 40 | Head | Pipe Fitter | Pennsylvania |
| 50 | Elizabeth Dubbritz | 36 | Wife | — | Pennsylvania |
| 51 | Elizabeth Dubbritz | 17 | Daughter | New Worker | Pennsylvania |
| 52 | Regina Dubbritz | 16 | Daughter | — | Pennsylvania |
| 53 | Florence Smith | 35 | Lodger | Machine Operator | Pennsylvania |
| 54 | Marie Smith | 14 | Lodger | — | Pennsylvania |
| 55 | Peter Lemshue | 57 | Head | Laborer | Ireland |
| 56 | Elizabeth Lemshue | 56 | Wife | — | Ireland |
| 57 | Charles Curre | 43 | Head | Laborer | Pennsylvania |
| 58 | Catherine Curre | 71 | Mother | Char Woman | Pennsylvania |
| 59 | Robert Kyle | 63 | Head | Watchman | Pennsylvania |
| 60 | Anna Kyle | 58 | Wife | — | Pennsylvania |
| 61 | Robert Kyle | 39 | Son | Truck Driver | Pennsylvania |
| 62 | John Kyle | 32 | Son | Stenographer | Pennsylvania |
| 63 | James Kyle | 24 | Son | Bookkeeper & Typewriter | Pennsylvania |
| 64 | Charles Bradley | 61 | Head | Maintenance Man | Pennsylvania |
| 65 | Mary Bradley | 60 | Wife | — | Pennsylvania |
| 66 | John Bradley THIS PERSON | 35 | Son | — | Pennsylvania |
| 67 | Anthony Zerkalust | 19 | Head | Planer | Pennsylvania |
| 68 | Josephine Zerkalust | 48 | Mother | — | Lithuania |
| 69 | Rose Zerkalust | 20 | Lodger | New Worker | Pennsylvania |
| 70 | John Conn | 38 | Head | — | Pennsylvania |
| 71 | Marion Conn | 32 | Wife | — | Pennsylvania |
| 72 | John Conn | 14 | Son | — | Pennsylvania |
| 73 | James Conn | 12 | Son | — | Pennsylvania |
| 74 | Robert Conn | 5 | Son | — | Pennsylvania |
| 75 | Mary Conn | 2 | Daughter | — | Pennsylvania |
| 76 | George White | 45 | Head | Blacksmith | Ireland |
| 77 | Sarah White | 50 | Wife | — | Ireland |
| 78 | Florence White | 19 | Daughter | Waitress | Pennsylvania |
| 79 | Robert White | 16 | Son | — | Pennsylvania |
| 80 | Harry White | 10 | Son | — | Pennsylvania |
Pedigree Summary
John
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)