RC
Robert Cook — 1940 US Census Record
Model Tree available1940 United States Federal Census · Delaware-County, Pennsylvania
Our Model Tree links this Robert Cook across the 1920, 1930 and 1940 US Censuses in Delaware-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Samuel & Mabel — first a head (b.~1901), then head of a 5-person household.
Age 39
b. ~1901
Male
Head
Born: New Jersey
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Delaware-County, Pennsylvania |
| Surname | Cook |
| Given Name | Robert J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | Prospect Park |
| 1935 Residence (County) | Delaware |
| Additional Details | |
| Occupation | Electrician |
| Industry | Machine Shop |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 3116 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Electrician |
| Township / Ward | Prospect Park |
| Est. Birth Year | ~1901 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Janice Cook | Daughter | — | 10 | ~1930 |
| Robert Cook | Head | — | 39 | ~1901 |
| Bertha Mctersen | Other | — | 61 | ~1879 |
| Charles Mctersen | Other | — | 63 | ~1877 |
| Margaret Cook | Spouse | — | 38 | ~1902 |
Census Appearances
1920
Delaware, Pennsylvania
Son, age 19
Delaware, Pennsylvania · implied b. ~1901 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Robert T. |
| 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 | Electrician |
| Industry | Elect. Contract. |
| 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
Delaware, Pennsylvania
Head, age 29
Delaware, Pennsylvania · implied b. ~1901 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Robert J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | New Jersey |
| Age at First Marriage | 26 |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Occupation | Salesman |
| Industry | Battery Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 9000 |
| Radio Set | R |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Delaware-County, Pennsylvania
Head, age 39
Delaware-County, Pennsylvania · implied b. ~1901 — 5 household members
| Surname | Cook |
| Given Name | Robert J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | Prospect Park |
| 1935 Residence (County) | Delaware |
| Occupation | Electrician |
| Industry | Machine Shop |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 3116 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| 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 Robert Cook across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Samuel Cook (~0.92 confidence) and mother Mabel Cook (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Samuel Cook
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Mabel Cook
b. ~1878
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Cook
Head · 1940 · age 39 · b. ~1901 · 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-t0627-03494-00597)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Clara D. Bynum | 42 | Wife | — | Tennessee |
| 42 | Junius Bynum | 23 | Son | Mechanic | Alabama |
| 43 | Jasper Bynum | 21 | Son | Mechanic Helper | Alabama |
| 44 | Chloe E. Bynum | 17 | Son | — | Virginia |
| 45 | Edward Rementer | 59 | Head | Core Maker | Pennsylvania |
| 46 | Mildred G. Rementer | 41 | Wife | — | Pennsylvania |
| 47 | Edward Rementer | 17 | Son | — | Pennsylvania |
| 48 | Margaret Rementer | 9 | Daughter | — | Pennsylvania |
| 49 | John Palmer | 64 | Head | Helper | Pennsylvania |
| 50 | Margaret Palmer | 64 | Wife | — | Pennsylvania |
| 51 | Jack Palmer | 23 | Son | Roller | Pennsylvania |
| 52 | John Woder | 33 | Son-in-law | Crane Operator | Pennsylvania |
| 53 | Dorothy Woder | 32 | Daughter | Clerk | Pennsylvania |
| 54 | Richard Yoder | 11 | Grandson | — | Pennsylvania |
| 55 | Robert J. Cook THIS PERSON | 39 | Head | Electrician | New Jersey |
| 56 | Margaret E. Cook | 38 | Wife | — | Pennsylvania |
| 57 | Janice E. Cook | 10 | Daughter | — | Pennsylvania |
| 58 | Charles D. Mctersen | 63 | Father-in-law | — | Pennsylvania |
| 59 | Bertha M. Mctersen | 61 | Mother-in-law | — | Pennsylvania |
| 60 | Melvin V. Search | 41 | Head | Instrument Man | Pennsylvania |
| 61 | Ida M. Search | 44 | Wife | — | Pennsylvania |
| 62 | Ida Dehaven | 22 | Niece | Clerk | Pennsylvania |
| 63 | G. Franklin Temple | 31 | Head | Chemical Eng. | Maine |
| 64 | Lucia M. Temple | 26 | Wife | — | Colorado |
| 65 | Clarence M. James | 57 | Head | Contractor | Pennsylvania |
| 66 | Blanche B. James | 54 | Wife | — | Pennsylvania |
| 67 | Percy Rodgers | 50 | Head | Clerk | Pennsylvania |
| 68 | Marian A. Rodgers | 45 | Wife | — | Pennsylvania |
| 69 | Doris R. Gatton | 24 | Daughter | — | Pennsylvania |
| 70 | Roland A. Allen | 38 | Head | Sales Clerk | Alabama |
| 71 | Aileen Allen | 34 | Wife | — | Indiana |
| 72 | Wayne Allen | 9 | Son | — | Pennsylvania |
| 73 | Alice Allen | 1 | Daughter | — | Pennsylvania |
| 74 | Wm S. Pauling | 63 | Head | Carpenter | Pennsylvania |
| 75 | Anna M. Pauling | 61 | Wife | — | Pennsylvania |
| 76 | Lillian Pauling | 23 | Daughter | Housework | Pennsylvania |
| 77 | Edward Pauling | 29 | Son | Meat Cutter | Pennsylvania |
| 78 | Rose Pauling | 23 | Daughter-in-law | — | Pennsylvania |
| 79 | Alfred Pauling | 2 | Grandson | — | Pennsylvania |
| 80 | Anna S. Pauling | 1 | Granddaughter | — | Pennsylvania |
Pedigree Summary
Robert
Gen 1 · 2 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)