JC
John Cooper — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Delaware-County, Pennsylvania
Our Model Tree links this John Cooper across the 1920, 1930 and 1940 US Censuses in Delaware-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1869), then head of a 3-person household.
Age 71
b. ~1869
Male
Head
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Delaware-County, Pennsylvania |
| Surname | Cooper |
| Given Name | John S. S. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 71 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Lansdowne Borough |
| 1935 Residence (County) | Delaware |
| Additional Details | |
| Occupation | Salesman |
| Industry | Wholesale Jewelry |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 868 |
| Highest Grade | G-5 |
| 1935 Residence | Same House |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Salesman |
| Township / Ward | Lansdowne Borough |
| Est. Birth Year | ~1869 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Eleanor Cooper | Daughter | — | 45 | ~1895 |
| John Cooper | Head | — | 71 | ~1869 |
| Rebecca Cooper | Spouse | — | 77 | ~1863 |
Census Appearances
1920
Delaware, Pennsylvania
Head, age 51
Delaware, Pennsylvania · implied b. ~1869 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | John SS |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Jeweler |
| Industry | Wholesale |
| Class of Worker | OA |
| 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
Delaware, Pennsylvania
Head, age 61
Delaware, Pennsylvania · implied b. ~1869 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | John S. S. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 22 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | secretary |
| Industry | trust co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 10,000 |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Delaware-County, Pennsylvania
Head, age 71
Delaware-County, Pennsylvania · implied b. ~1869 — 3 household members
| Surname | Cooper |
| Given Name | John S. S. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 71 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Lansdowne Borough |
| 1935 Residence (County) | Delaware |
| Occupation | Salesman |
| Industry | Wholesale Jewelry |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 868 |
| Highest Grade | G-5 |
| 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 John Cooper across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Cooper
Head · 1940 · age 71 · b. ~1869 · Pennsylvania
★ 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 — Delaware-County, Pennsylvania
Open full size
1940 US Federal Census — Delaware-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03493-00166)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Allen C Kane | 53 | Head | Salesman | Pennsylvania |
| 2 | Pauline A Kane | 47 | Wife | — | Pennsylvania |
| 3 | Polly Kane | 21 | Daughter | — | Pennsylvania |
| 4 | Allen, Jr. Kane | 19 | Son | Stenographer | Pennsylvania |
| 5 | Martha Anderson | 70 | Mother-in-law | — | Pennsylvania |
| 6 | Mary Anderson | 72 | Aunt | — | Pennsylvania |
| 7 | Lily J. H. Calvert | 71 | Head | — | New Jersey |
| 8 | Elizabeth Schoffle | 47 | Daughter | File Clerk | New Jersey |
| 9 | Margaret Schoffle | 20 | Granddaughter | Secretary | Pennsylvania |
| 10 | Stuart Wilder | 25 | Head | Factory Production Student | New York |
| 11 | Grace Nelson Wilder | 27 | Wife | Factory Production Student | New York |
| 12 | Herbert C. Alexander | 63 | Head | — | Pennsylvania |
| 13 | Jean Alexander | 62 | Wife | — | Pennsylvania |
| 14 | Martha C. Noyes | 65 | Head | — | Pennsylvania |
| 15 | Edward J Miller | 49 | Head | Deputy State Health Inspector | Pennsylvania |
| 16 | Sabina Miller | 48 | Wife | — | Pennsylvania |
| 17 | Alice Miller | 19 | Daughter | Saleswoman | Pennsylvania |
| 18 | Mary Miller | 15 | Daughter | — | Pennsylvania |
| 19 | Sabina Kane | 25 | Daughter | — | Pennsylvania |
| 20 | Anna Maria Kane | 5 | Granddaughter | — | Pennsylvania |
| 21 | Joan Kane | 3 | Granddaughter | — | Pennsylvania |
| 22 | John Kane | 1 | Grandson | — | Pennsylvania |
| 23 | Alice Brennan | 79 | Housekeeper | — | Pennsylvania |
| 24 | Fred Boesch | 48 | Lodger | Barber | Pennsylvania |
| 25 | Hillein Johnson | 26 | Head | Clerk | Pennsylvania |
| 26 | Elizabeth Johnson | 20 | Wife | — | Pennsylvania |
| 27 | Mary Devaney | 24 | Head | — | — |
| 28 | Josephine Schiavo | 24 | Partner | Nurse | Pennsylvania |
| 29 | William E Wunderlich | 62 | Head | Cashier | Pennsylvania |
| 30 | Elsie Wunderlich | 49 | Wife | — | Pennsylvania |
| 31 | Grace Wunderlich | 24 | Daughter | Stenographer | Pennsylvania |
| 32 | William Wunderlich | 18 | Son | — | Pennsylvania |
| 33 | Doris Wunderlich | 16 | Daughter | — | Pennsylvania |
| 34 | John S. S. Cooper THIS PERSON | 71 | Head | Salesman | Pennsylvania |
| 35 | Rebecca Cooper | 77 | Wife | — | Pennsylvania |
| 36 | Eleanor D. Cooper | 45 | Daughter | Research Assistant | Pennsylvania |
| 37 | Charles C Mains | 74 | Head | — | Pennsylvania |
| 38 | Elizabeth P Mains | 73 | Wife | — | Pennsylvania |
| 39 | Elizabeth Penrose Mains | 46 | Daughter | Medical Doctor | Pennsylvania |
| 40 | Mary Carr Mains | 44 | Daughter | Clerical Work | Pennsylvania |
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)