WC
William Cooper — 1940 US Census Record
Model Tree available1940 United States Federal Census · Union-County, New Jersey
Our Model Tree links this William Cooper across the 1920, 1930 and 1940 US Censuses in Union-County, New Jersey (XGBoost, ~Confirmed), with identified parents Mary — first a head (b.~1899), then head of a 5-person household.
Age 41
b. ~1899
Male
Head
Born: New Jersey
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Union-County, New Jersey |
| Surname | Cooper |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | Elizabeth |
| 1935 Residence (County) | Union |
| Additional Details | |
| Occupation | Sales Distributor |
| Industry | Tires + Tubes |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 5000 |
| Highest Grade | H-4 |
| 1935 Residence | New Jersey |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Sales Distributor |
| Township / Ward | Roselle Park |
| Est. Birth Year | ~1899 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| William Cooper | Head | — | 41 | ~1899 |
| Raymond Cooper | Son | — | 16 | ~1924 |
| William Cooper | Son | — | 18 | ~1922 |
| Richard Cooper | Son | — | 8 | ~1932 |
| Ella Cooper | Spouse | — | 40 | ~1900 |
Census Appearances
1920
Union, New …
Son, age 19
Union, New Jersey · implied b. ~1901 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Occupation | Lineman |
| Industry | Telephone Co |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Union, New …
Other, age 30
Union, New Jersey · implied b. ~1900 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | William |
| Relationship to Head | O |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | New Jersey |
| Age at First Marriage | 25 |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Occupation | Test Foreman |
| Industry | Telephone Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | 8000 |
| Home Value / Rent | R |
| Radio Set | no |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Union-County, New …
Head, age 41
Union-County, New Jersey · implied b. ~1899 — 5 household members
| Surname | Cooper |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | Elizabeth |
| 1935 Residence (County) | Union |
| Occupation | Sales Distributor |
| Industry | Tires + Tubes |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 5000 |
| Highest Grade | H-4 |
| 1935 Residence | New Jersey |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
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: mother Mary Cooper (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mary Cooper
b. ~1870
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Cooper
Head · 1940 · age 41 · b. ~1899 · New Jersey
★ 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 — Union-County, New Jersey
Open full size
1940 US Federal Census — Union-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02389-00245)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Alice G. Davis | 32 | Wife | — | New York |
| 2 | William Cooper THIS PERSON | 41 | Head | Sales Distributor | New Jersey |
| 3 | Ella P. Cooper | 40 | Wife | — | New Jersey |
| 4 | William Cooper | 18 | Son | — | New Jersey |
| 5 | Raymond Cooper | 16 | Son | — | New Jersey |
| 6 | Richard Cooper | 8 | Son | — | New Jersey |
| 7 | Albert J. Pfarrer | 35 | Head | Bank Clerk | New Jersey |
| 8 | Geraldine Pfarrer | 38 | Wife | — | New York |
| 9 | Geraldine Pfarrer | 6 | Daughter | — | New Jersey |
| 10 | Barbara Pfarrer | 5 | Daughter | — | New Jersey |
| 11 | Here Ends Elmora Ave And Galloping Hill Rd. | None | — | — | — |
| 12 | William H. Mullery | 33 | Head | Asst. Super. | New Jersey |
| 13 | Helene Mullery | 28 | Wife | — | New Jersey |
| 14 | William H. Mullery | 1 | Son | — | New Jersey |
| 15 | Irving Goodall | 36 | Lodger | Asst. Foreman | New Jersey |
| 16 | Ernest F. Bast | 54 | Head | Power Engineer | Germany |
| 17 | Nora Bast | 51 | Wife | — | New Jersey |
| 18 | Freda K. Bast | 16 | Daughter | — | New Jersey |
| 19 | Clarence F. Scott | 44 | Head | Feather Merchant | Maryland |
| 20 | Louise N. Scott | 45 | Wife | — | Delaware |
| 21 | Clarence F. Jr. Scott | 19 | Son | — | Maryland |
| 22 | Robert R. Scott | 17 | Son | — | Maryland |
| 23 | Richard M. Scott | 7 | Son | — | New Jersey |
| 24 | Thomas H. Charlton | 53 | Head | Accountant | New York |
| 25 | Anne Charlton | 49 | Wife | — | New York |
| 26 | Margaret Charlton | 17 | Daughter | — | New York |
| 27 | Richard P. Wahl | 39 | Head | Elec. Engineer | Indiana |
| 28 | Beatrice Wahl | 37 | Wife | — | Indiana |
| 29 | Patricia Wahl | 13 | Daughter | — | New Jersey |
| 30 | Richard Jr. Wahl | 9 | Son | — | New Jersey |
| 31 | Edward E. Matter | 42 | Head | Chemist | New Hampshire |
| 32 | Alice E. Matter | 33 | Wife | — | New Jersey |
| 33 | Gwendolyn Matter | 5 | Daughter | — | New Jersey |
| 34 | James W. Flynt | 50 | Head | Mech. Engineer | New Jersey |
| 35 | Agnes Flynt | 48 | Wife | — | New Jersey |
| 36 | Louis W. Barton | 53 | Head | Printing Office Manager | New York |
| 37 | Laura E. Barton | 48 | Wife | — | New Jersey |
| 38 | Ethel H. Barton | 25 | Daughter | Teacher | New Jersey |
| 39 | Here Ends Rhoda Terrace | None | — | — | — |
| 40 | Edward B. Holschuh | 39 | Head | Editor | New Jersey |
Pedigree Summary
William
Gen 1 · 1 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)