DC
David Cook — 1940 US Census Record
Model Tree available1940 United States Federal Census · Westmoreland-County, Pennsylvania
Our Model Tree links this David Cook across the 1920, 1930 and 1940 US Censuses in Westmoreland-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Foster & Thomas — first a son (b.~1920), then head of a 5-person household.
Age 20
b. ~1920
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Westmoreland-County, Pennsylvania |
| Surname | Cook |
| Given Name | David W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | New Alexandria |
| 1935 Residence (County) | Westmoreland |
| Additional Details | |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | New Alexandria |
| Est. Birth Year | ~1920 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to David | Age | Birth yr |
|---|---|---|---|---|
| Edna Cook | Spouse | — | 54 | ~1886 |
| Thomas Cook | Head | — | 57 | ~1883 |
| Etna Cook | Daughter | — | 27 | ~1913 |
| David Cook | Son | — | 20 | ~1920 |
| Joseph Cook | Son | — | 24 | ~1916 |
Census Appearances
1920
Westmoreland, Pennsylvania
Son, age
Westmoreland, Pennsylvania · implied b. ~1920 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | David Wm. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | No |
| Can Write | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Westmoreland, Pennsylvania
Son, age 10
Westmoreland, Pennsylvania · implied b. ~1920 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | David H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| 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
Westmoreland-County, Pennsylvania
Son, age 20
Westmoreland-County, Pennsylvania · implied b. ~1920 — 5 household members
| Surname | Cook |
| Given Name | David W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | New Alexandria |
| 1935 Residence (County) | Westmoreland |
| 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 David Cook across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Foster Cook (~0.92 confidence) and father Thomas Cook (~0.92 confidence) and father Thomas Cook (~0.92 confidence) and mother Edna Cook (~0.92 confidence) and mother Edna Cook (~0.92 confidence) and mother Elva Cook (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Foster Cook
b. ~1883
Source father
● Household
· direct · ~0.92
Father
Thomas Cook
b. ~1883
Source father
● Household
· direct · ~0.92
Father
Thomas Cook
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Edna Cook
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Edna Cook
b. ~1886
Source mother
● Household
· direct · ~0.92
Mother
Elva Cook
b. ~1885
Source mother
● Household
· direct · ~0.92
This person
Anchor record
David Cook
Son · 1940 · age 20 · b. ~1920 · Pennsylvania
★ You are viewing this record
Sibling
Joseph Cook
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Etna Cook
Sibling · 1940 · age 27
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 — Westmoreland-County, Pennsylvania
Open full size
1940 US Federal Census — Westmoreland-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03634-00454)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Bessie V. Lehnert | 39 | Daughter | — | Pennsylvania |
| 2 | Gail L. Lehnert | 18 | Daughter | — | Pennsylvania |
| 3 | Hilda J. Lehnert | 17 | Daughter | — | Pennsylvania |
| 4 | William A. Hull | 59 | Head | Store Owner | Pennsylvania |
| 5 | Jessie Hull | 56 | Wife | — | Ohio |
| 6 | David G. Hull | 24 | Head | Store | Pennsylvania |
| 7 | Mildred M. Hull | 22 | Wife | — | Pennsylvania |
| 8 | Thomas L. Cook | 57 | Head | Superintendent | Pennsylvania |
| 9 | Edna R. Cook | 54 | Wife | — | Pennsylvania |
| 10 | Etna L. Cook | 27 | Daughter | Registered Nurse | Pennsylvania |
| 11 | Joseph K. Cook | 24 | Son | School Teacher | Pennsylvania |
| 12 | David W. Cook THIS PERSON | 20 | Son | — | Pennsylvania |
| 13 | Harry E. Dewitt | 53 | Head | Salesman | Pennsylvania |
| 14 | John C. Dewitt | 53 | Brother | Clerk | Pennsylvania |
| 15 | Rachel B. Dewitt | 88 | Mother | — | Pennsylvania |
| 16 | Margaret C. Dewitt | 24 | Daughter | — | Pennsylvania |
| 17 | Anna L. Alzap | 34 | Housekeeper | Housekeeper | Pennsylvania |
| 18 | Archie G. Pugh | 70 | Head | Jeweler | Pennsylvania |
| 19 | Emma E. Pugh | 72 | Wife | — | Pennsylvania |
| 20 | Helen Shaw | 35 | Head | School Teacher | Pennsylvania |
| 21 | Harry H. Struble | 49 | Head | Carpenter | Pennsylvania |
| 22 | Bertha L. Struble | 51 | Wife | — | Pennsylvania |
| 23 | Hellen A. Struble | 21 | Daughter | — | Ohio |
| 24 | Angeline C. Kinsland | 84 | Mother | — | Pennsylvania |
| 25 | William M. Barnhart | 45 | Head | Coal Washer | Pennsylvania |
| 26 | Mae W. Barnhart | 44 | Wife | — | Pennsylvania |
| 27 | Clifford W. Barnhart | 18 | Son | — | Pennsylvania |
| 28 | Ruth N. Barnhart | 16 | Daughter | — | Pennsylvania |
| 29 | Richard C. Barnhart | 10 | Son | — | Pennsylvania |
| 30 | William J. Shearer | 27 | Head | Truck Driver | Pennsylvania |
| 31 | Dorothy E. Shearer | 27 | Wife | — | Pennsylvania |
| 32 | Harry Ashbaugh | 44 | Head | Rural Mail | Pennsylvania |
| 33 | Angela M. Ashbaugh | 36 | Wife | — | Pennsylvania |
| 34 | Harry J. Ashbaugh | 17 | Son | — | Pennsylvania |
| 35 | James E. Ashbaugh | 13 | Son | — | Pennsylvania |
| 36 | Ralph R. Beattie | 37 | Head | Truck Driver | Pennsylvania |
| 37 | Mary A. Beattie | 29 | Wife | — | Pennsylvania |
| 38 | Betty J. Beattie | 8 | Daughter | — | Pennsylvania |
| 39 | Elizabeth J. Beattie | 75 | Head | — | Ireland |
| 40 | Martha C. Beattie | 65 | Sister | — | Pennsylvania |
Pedigree Summary
David + 2 siblings
Gen 1 · 6 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)