RC
Robert Cooper — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, New Jersey
Our Model Tree links this Robert Cooper across the 1920, 1930 and 1940 US Censuses in Middlesex-County, New Jersey (XGBoost, ~Confirmed) — first a head (b.~1900), then head of a 3-person household.
Age 40
b. ~1900
Male
Head
Born: Scotland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, New Jersey |
| Surname | Cooper |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Middlesex |
| 1935 Residence (County) | Middlesex |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Brick-layer |
| Industry | Brick yard |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1920 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Occupation | Brick-Layer |
| Est. Birth Year | ~1900 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Mary Cooper | Daughter | — | 15 | ~1925 |
| Robert Cooper | Head | — | 40 | ~1900 |
| Ruth Cooper | Spouse | — | 45 | ~1895 |
Census Appearances
1920
Middlesex, New …
Other, age 20
Middlesex, New Jersey · implied b. ~1900 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Robert |
| Relationship to Head | father-in-law |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Scotland |
| Year of Immigration | 1915 |
| Naturalization Status | First papers filed |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | mason |
| Industry | Construction |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Scotch |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1930
Middlesex, New …
Head, age 30
Middlesex, New Jersey · implied b. ~1900 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Robert H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1915 |
| Age at First Marriage | 22 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Mason |
| Industry | Building Tiles |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Radio Set | R |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Middlesex-County, New …
Head, age 40
Middlesex-County, New Jersey · implied b. ~1900 — 3 household members
| Surname | Cooper |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Middlesex |
| 1935 Residence (County) | Middlesex |
| Naturalization Status | Naturalized |
| Occupation | Brick-layer |
| Industry | Brick yard |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1920 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
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 Cooper across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Robert Cooper
Head · 1940 · age 40 · b. ~1900 · New Jersey
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Middlesex-County, New Jersey
Open full size
1940 US Federal Census — Middlesex-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02363-00172)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Edward Hoda | 29 | Head | Mixer | New Jersey |
| 42 | Susie Hoda | 24 | Wife | Saleslady | Pennsylvania |
| 43 | Jennie Hoda | 4 | Daughter | — | — |
| 44 | John Parlits | 31 | Head | Still Operator | New Jersey |
| 45 | Adele Parlits | 28 | Wife | — | New Jersey |
| 46 | Richard Parlits | 9 | Son | — | New Jersey |
| 47 | Daniel Parlits | 5 | Son | — | — |
| 48 | Mary Jane Parlits | 3 | Daughter | — | — |
| 49 | Edward Blaszka | 30 | Head | Still Operator | New Jersey |
| 50 | Stella Blaszka | 27 | Wife | — | New Jersey |
| 51 | Edward Blaszka | 3 | Son | — | — |
| 52 | William Cavanaugh | 43 | Head | Steam Engineer | New Jersey |
| 53 | Sophie Cavanaugh | 45 | Wife | — | New York |
| 54 | John Cavanaugh | 19 | Son | Painter | New Jersey |
| 55 | Patrick Cavanaugh | 17 | Son | — | New Jersey |
| 56 | Margaret Cavanaugh | 15 | Daughter | — | New Jersey |
| 57 | William Cavanaugh | 11 | Son | — | New Jersey |
| 58 | Thomas Cavanaugh | 8 | Son | — | New Jersey |
| 59 | James Cavanaugh | 5 | Son | — | — |
| 60 | John Twardy | 51 | Head | Fireman | Poland |
| 61 | Catherine Twardy | 55 | Wife | — | Poland |
| 62 | John Twardy | 25 | Son | Laborer | New Jersey |
| 63 | Edward Twardy | 25 | Son | Laborer | Pennsylvania |
| 64 | Stephen Twardy | 24 | Son | Truck Driver | Pennsylvania |
| 65 | Jennie Twardy | 19 | Daughter | Cutter | Pennsylvania |
| 66 | Walter Twardy | 18 | Son | Truck Driver | Pennsylvania |
| 67 | Henry Twardy | 15 | Son | — | New Jersey |
| 68 | Esther Twardy | 12 | Daughter | — | New Jersey |
| 69 | Frank Eser | 35 | Head | Still Operator | Connecticut |
| 70 | Stella Eser | 31 | Wife | Knitter | New Jersey |
| 71 | Frank Eser | 1 | Son | — | — |
| 72 | Robert Cooper THIS PERSON | 40 | Head | Brick-Layer | Scotland |
| 73 | Ruth Cooper | 45 | Wife | — | New Jersey |
| 74 | Mary Cooper | 15 | Daughter | — | New Jersey |
| 75 | Frank Naylor | 47 | Head | Still Operator | New Jersey |
| 76 | Eliza Naylor | 45 | Wife | — | New Jersey |
| 77 | Mildred Naylor | 14 | Daughter | — | New Jersey |
| 78 | George Twardy | 45 | Head | Laborer | Poland |
| 79 | Stella Twardy | 43 | Wife | — | Poland |
| 80 | Sigmund Twardy | 23 | Son | Cutter | New Jersey |
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)