JC
Joseph Cook — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Joseph Cook across the 1910, 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1864), then head of a 2-person household.
Age 76
b. ~1864
Male
Head
Born: Pennsylvania
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Cook |
| Given Name | Joseph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 76 |
| Marital Status | Widowed |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pitcairn Borough |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pitcairn Borough |
| Est. Birth Year | ~1864 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Joseph | Age | Birth yr |
|---|---|---|---|---|
| Joseph Cook | Head | — | 76 | ~1864 |
| Charles Cook | Son | — | 48 | ~1892 |
Census Appearances
1910
Allegheny, Pennsylvania
Head, age 46
Allegheny, Pennsylvania · implied b. ~1864
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Cook |
| Given Name | Joseph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Years Married | 24 |
| Father's Birthplace | Ger. German |
| Mother's Birthplace | Ger. German |
| Occupation | Engineer |
| Industry | Locomotive |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Allegheny, Pennsylvania
Head, age 55
Allegheny, Pennsylvania · implied b. ~1865 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Joseph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Engineer |
| Industry | Locomotive |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Head, age 65
Allegheny, Pennsylvania · implied b. ~1865 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Joseph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 21 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Loco. Engineer |
| Industry | Steam Railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 12,000 |
| Radio Set | R |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Head, age 76
Allegheny-County, Pennsylvania · implied b. ~1864 — 2 household members
| Surname | Cook |
| Given Name | Joseph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 76 |
| Marital Status | Widowed |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pitcairn Borough |
| 1935 Residence (County) | Allegheny |
| Highest Grade | No 7 |
| 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 Joseph Cook across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Joseph Cook
Head · 1940 · age 76 · b. ~1864 · 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 — 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-t0627-03415-00167)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Sheeran | 55 | Head | Laborer | Northern Ireland |
| 2 | Elizabeth Sheeran | 58 | Wife | — | Eire |
| 3 | Ira M. Harkins | 53 | Head | Hostler | Pennsylvania |
| 4 | Edna Harkins | 51 | Wife | — | Pennsylvania |
| 5 | John Harkins | 21 | Son | New Worker | Pennsylvania |
| 6 | William Harkins | 19 | Son | Laborer | Pennsylvania |
| 7 | Helen Harkins | 13 | Daughter | — | Pennsylvania |
| 8 | Daniel J. Shaw | 64 | Head | Carinspector | Pennsylvania |
| 9 | Mary Shaw | 64 | Wife | — | Scotland |
| 10 | Joseph Nichols | 68 | Brother-in-law | — | Scotland |
| 11 | Minnie Strider | 53 | Sister-in-law | — | Pennsylvania |
| 12 | J. G. Phillippi | 40 | Head | Switch Tender | Pennsylvania |
| 13 | Dorothy Phillippi | 35 | Wife | Secretary | Pennsylvania |
| 14 | Nellie Diener | 61 | Mother-in-law | — | Pennsylvania |
| 15 | John C. Horton | 54 | Head | Locomotive Engineer | Pennsylvania |
| 16 | Margaret C. Horton | 45 | Wife | — | Pennsylvania |
| 17 | Jean Horton | 15 | Daughter | — | Pennsylvania |
| 18 | Lucille Horton | 14 | Daughter | — | Pennsylvania |
| 19 | Jane Horton | 12 | Daughter | — | Pennsylvania |
| 20 | Ralph E. Cook | 38 | Head | Laborer | Pennsylvania |
| 21 | Dorothy M. Cook | 38 | Wife | — | Pennsylvania |
| 22 | Persis Cook | 19 | Daughter | Salesgirl | Pennsylvania |
| 23 | Doris Cook | 17 | Daughter | — | Pennsylvania |
| 24 | Alberta Cook | 12 | Daughter | — | Pennsylvania |
| 25 | Jeanne Cook | 9 | Daughter | — | Pennsylvania |
| 26 | Joseph Cook THIS PERSON | 76 | Head | — | Pennsylvania |
| 27 | Charles C. Cook | 48 | Son | Brakeman | Pennsylvania |
| 28 | Le Vere Johnson | 42 | Head | Secretary | New York |
| 29 | Helen Johnson | 37 | Wife | — | New York |
| 30 | Barbara Johnson | 14 | Daughter | — | New York |
| 31 | James Johnson | 13 | Son | — | New York |
| 32 | David Johnson | 7 | Son | — | Pennsylvania |
| 33 | R. M. Fry | 39 | Head | Crane Engineer | Pennsylvania |
| 34 | Margaret Fry | 38 | Wife | — | Pennsylvania |
| 35 | Ralph Fry | 16 | Son | — | Pennsylvania |
| 36 | Louise Fry | 12 | Daughter | — | Pennsylvania |
| 37 | John C. Poohill | 56 | Head | Machinist | Pennsylvania |
| 38 | Blanche Poohill | 57 | Wife | Organist | Pennsylvania |
| 39 | Jack Poohill | 21 | Son | Instructor | Canada-English |
| 40 | Margaret Poohill | 20 | Daughter | Stenographer | 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)