WC
William Cooper — 1940 US Census Record
Model Tree available1940 United States Federal Census · Luzerne-County, Pennsylvania
Our Model Tree links this William Cooper across the 1920, 1930 and 1940 US Censuses in Luzerne-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Joseph & Mary — first a son (b.~1916), then head of a 7-person household.
Age 24
b. ~1916
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Luzerne-County, Pennsylvania |
| Surname | Cooper |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Wilkes Barre City |
| 1935 Residence (County) | Luzerne |
| Additional Details | |
| Highest Grade | H-4 |
| 1935 Residence | Same House |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Wilkes Barre City |
| Est. Birth Year | ~1916 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Joseph Cooper | Head | — | 54 | ~1886 |
| William Cooper | Son | — | 24 | ~1916 |
| Eddie Cooper | Son | — | 21 | ~1919 |
| James Cooper | Son | — | 30 | ~1910 |
| Hugh Cooper | Son | — | 28 | ~1912 |
| Joseph Cooper | Son | — | 26 | ~1914 |
| Mary Cooper | Spouse | — | 50 | ~1890 |
Census Appearances
1920
Luzerne, Pennsylvania
Son, age 3
Luzerne, Pennsylvania · implied b. ~1917 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | William |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Luzerne, Pennsylvania
Son, age 13
Luzerne, Pennsylvania · implied b. ~1917 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| 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
Luzerne-County, Pennsylvania
Son, age 24
Luzerne-County, Pennsylvania · implied b. ~1916 — 7 household members
| Surname | Cooper |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Wilkes Barre City |
| 1935 Residence (County) | Luzerne |
| Highest Grade | H-4 |
| 1935 Residence | Same House |
| 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 William Cooper across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Joseph Cooper (~0.92 confidence) and mother Mary Cooper (~0.92 confidence) and father Joseph Cooper (~0.92 confidence) and mother Mary Cooper (~0.92 confidence) and mother Mary Cooper (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Joseph Cooper
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Mary Cooper
b. ~1884
Source mother
● Household
· direct · ~0.92
Father
Joseph Cooper
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Mary Cooper
b. ~1887
Source mother
● Household
· direct · ~0.92
Mother
Mary Cooper
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Cooper
Son · 1940 · age 24 · b. ~1916 · Pennsylvania
★ You are viewing this record
Sibling
Hugh Cooper
Sibling · 1940 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Cooper
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eddie Cooper
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Cooper
Sibling · 1940 · age 30
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 — Luzerne-County, Pennsylvania
Open full size
1940 US Federal Census — Luzerne-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03562-00192)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Catherine Washburn | 21 | Wife | — | Pennsylvania |
| 42 | Charles Washburn | 49 | Head | Laborer | Pennsylvania |
| 43 | Myrtle A. Washburn | 44 | Wife | — | Pennsylvania |
| 44 | Henry G. Hartley | 47 | Head | Fireman | Pennsylvania |
| 45 | Jessie Hartley | 44 | Wife | — | Pennsylvania |
| 46 | Charles Hartley | 20 | Son | — | Pennsylvania |
| 47 | Esther Hartley | 18 | Daughter | — | Pennsylvania |
| 48 | Ellen Hartley | 15 | Son | — | Pennsylvania |
| 49 | Lois Hartley | 12 | Daughter | — | Pennsylvania |
| 50 | Joan Hartley | 8 | Daughter | — | Pennsylvania |
| 51 | Adeline Fadden | 40 | Head | Clerk | Pennsylvania |
| 52 | Rebecca Fadden | 42 | Sister | — | Pennsylvania |
| 53 | Leo Fadden | 13 | Son | — | Pennsylvania |
| 54 | John Fadden | 6 | Son | — | Pennsylvania |
| 55 | Peter J. Kropp | 56 | Head | Engineer | Germany |
| 56 | Margaret Kropp | 47 | Wife | — | Pennsylvania |
| 57 | Thomas Brislin | 24 | Nephew | Clerk | Pennsylvania |
| 58 | Katherine Brislin | 24 | Wife | — | Pennsylvania |
| 59 | Infant-Marietta Kropp | 0 | Daughter | — | Pennsylvania |
| 60 | Allie J. Hilbert | 55 | Head | — | Pennsylvania |
| 61 | Anna A. Hilbert | 53 | Sister | — | Ohio |
| 62 | Frances Swinick | 22 | Lodger | Cigar Worker | Pennsylvania |
| 63 | — | None | — | — | — |
| 64 | Harry H. Horitz | 43 | Head | Laborer | Pennsylvania |
| 65 | Christine Horitz | 43 | Wife | — | Pennsylvania |
| 66 | John Horitz | 20 | Son | — | Pennsylvania |
| 67 | Elias Horitz | 18 | Son | — | Pennsylvania |
| 68 | Mary Horitz | 14 | Daughter | — | Pennsylvania |
| 69 | Martha Horitz | 14 | Daughter | — | Pennsylvania |
| 70 | Donald Horitz | 12 | Son | — | Pennsylvania |
| 71 | David Horitz | 12 | Son | — | Pennsylvania |
| 72 | Christine Horitz | 4 | Daughter | — | Pennsylvania |
| 73 | John Gerlach | 71 | Father | U | Germany |
| 74 | Joseph Cooper | 54 | Head | Watchman | Pennsylvania |
| 75 | Mary Cooper | 50 | Wife | — | Pennsylvania |
| 76 | James Cooper | 30 | Son | Pressman | Pennsylvania |
| 77 | Hugh Cooper | 28 | Son | Truck Driver | Pennsylvania |
| 78 | Joseph Cooper | 26 | Son | Apprentice | Pennsylvania |
| 79 | William Cooper THIS PERSON | 24 | Son | — | Pennsylvania |
| 80 | Eddie Cooper | 21 | Son | — | Pennsylvania |
Pedigree Summary
William + 4 siblings
Gen 1 · 5 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)