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John Blackburn — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Washington-County, Pennsylvania
Our Model Tree links this John Blackburn across the 1930 and 1940 US Censuses in Washington-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1892), then head of a 10-person household.
Age 48
b. ~1892
Male
Head
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Washington-County, Pennsylvania |
| Surname | Blackburn |
| Given Name | John |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | East Bethlehem |
| 1935 Residence (County) | Washington |
| Additional Details | |
| Occupation | cutter |
| Industry | miner |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 420 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Cutter |
| Township / Ward | East Bethlehem |
| Est. Birth Year | ~1892 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Blackburn | Son | — | 15 | ~1925 |
| Clifford Blackburn | Son | — | 10 | ~1930 |
| Extra Blackburn | Other | — | — | |
| Albert Blackburn | Son | — | 13 | ~1927 |
| George Blackburn | Son | — | 5 | ~1935 |
| Ruth Blackburn | Daughter | — | 3 | ~1937 |
| Bertha Blackburn | Spouse | — | 44 | ~1896 |
| John Blackburn | Head | — | 48 | ~1892 |
| Margaret Blackburn | Daughter | — | 17 | ~1923 |
| Patricia Blackburn | Daughter | — | 8 | ~1932 |
Census Appearances
1930
Washington, Pennsylvania
Head, age 38
Washington, Pennsylvania · implied b. ~1892 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blackburn |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 20 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Cutter |
| Industry | Coal mine |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 15 |
| Veteran | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Washington-County, Pennsylvania
Head, age 48
Washington-County, Pennsylvania · implied b. ~1892 — 10 household members
| Surname | Blackburn |
| Given Name | John |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | East Bethlehem |
| 1935 Residence (County) | Washington |
| Occupation | cutter |
| Industry | miner |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 420 |
| 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 Blackburn across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Blackburn
Head · 1940 · age 48 · b. ~1892 · Pennsylvania
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Washington-County, Pennsylvania
Open full size
1940 US Federal Census — Washington-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03623-00123)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Tamora Mc Cormack | 12 | daughter | — | Pennsylvania |
| 42 | French A Crow | 34 | head | Larryman | Pennsylvania |
| 43 | Elizabeth B Crow | 25 | wife | — | Pennsylvania |
| 44 | Alivian Crow | 6 | son | — | Pennsylvania |
| 45 | Larry Crow | 4 | son | — | Pennsylvania |
| 46 | Nick Halter | 48 | head | Loader | Germany |
| 47 | Sophia Halter | 50 | wife | — | Germany |
| 48 | Nick Halter | 73 | head | — | Germany |
| 49 | Martha Halter | 69 | wife | — | Germany |
| 50 | Mike J Csehily | 51 | head | Coal Loader | Hungary |
| 51 | Joe Cambio | 44 | head | Loader | Italy |
| 52 | Rose Cambio | 34 | wife | Loader | Pennsylvania |
| 53 | Josephine Cambio | 16 | daughter | — | Pennsylvania |
| 54 | Richard Cambio | 14 | son | — | Pennsylvania |
| 55 | Rose Marie Cambio | 12 | daughter | — | Pennsylvania |
| 56 | Rinaldo Cambio | 10 | son | — | Pennsylvania |
| 57 | Earnest Cambio | 7 | son | — | Pennsylvania |
| 58 | Joe Cambio | 4 | son | — | Pennsylvania |
| 59 | Sam Cambio | 2 | son | — | Pennsylvania |
| 60 | Daniel D Park | 69 | head | — | England |
| 61 | Annie Park | 52 | wife | — | Pennsylvania |
| 62 | John Blackburn THIS PERSON | 48 | head | Cutter | Pennsylvania |
| 63 | Bertha Blackburn | 44 | wife | — | Pennsylvania |
| 64 | Margaret Blackburn | 17 | daughter | — | Pennsylvania |
| 65 | John Blackburn | 15 | son | — | Pennsylvania |
| 66 | Albert Blackburn | 13 | son | — | Pennsylvania |
| 67 | Clifford Blackburn | 10 | son | — | Pennsylvania |
| 68 | Patricia Blackburn | 8 | daughter | — | Pennsylvania |
| 69 | George Blackburn | 5 | son | — | Pennsylvania |
| 70 | Ruth Ann Blackburn | 3 | daughter | — | Pennsylvania |
| 71 | Extra Line Blackburn | None | — | — | — |
| 72 | Joe Angelo | 45 | head | Loader | Italy |
| 73 | Lea Angelo | 33 | wife | — | Pennsylvania |
| 74 | Pete Angelo | 3 | son | — | Pennsylvania |
| 75 | Yolando A Angelo | 1 | daughter | — | Pennsylvania |
| 76 | Josephine Parmilla | 50 | head | — | Italy |
| 77 | August Parmilla | 19 | son | Loader | Pennsylvania |
| 78 | Joe Parmilla | 18 | son | Forestry | Pennsylvania |
| 79 | Katie Parmilla | 16 | daughter | — | Pennsylvania |
| 80 | Mary Parmilla | 15 | daughter | — | Pennsylvania |
Related Census Records
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)