JC
John Campbell — 1940 US Census Record
Model Tree available1940 United States Federal Census · Camden-County, New Jersey
Our Model Tree links this John Campbell across the 1920, 1930 and 1940 US Censuses in Camden-County, New Jersey (XGBoost, ~Confirmed), with identified parents John & Lillian — first a son (b.~1920), then head of a 5-person household.
Age 20
b. ~1920
Male
Son
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Camden-County, New Jersey |
| Surname | Campbell |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Camden City |
| 1935 Residence (County) | Camden |
| Additional Details | |
| Occupation | Engine Mechanic |
| Industry | Airport |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 330 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Engine Mechanic |
| Township / Ward | Camden City |
| Est. Birth Year | ~1920 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| John Campbell | Head | — | 58 | ~1882 |
| John Campbell | Son | — | 20 | ~1920 |
| Thomas Campbell | Son | — | 13 | ~1927 |
| Robert Campbell | Son | — | 15 | ~1925 |
| Lillian Campbell | Spouse | — | 55 | ~1885 |
Census Appearances
1920
Camden, New …
Son, age
Camden, New Jersey · implied b. ~1920 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Mother Tongue | English |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Camden, New …
Son, age 10
Camden, New Jersey · implied b. ~1920 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Camden-County, New …
Son, age 20
Camden-County, New Jersey · implied b. ~1920 — 5 household members
| Surname | Campbell |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Camden City |
| 1935 Residence (County) | Camden |
| Occupation | Engine Mechanic |
| Industry | Airport |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 330 |
| Highest Grade | Hs 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 John Campbell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Campbell (~0.92 confidence) and mother Lillian Campbell (~0.92 confidence) and mother Lillian Campbell (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Campbell
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Lillian Campbell
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Lillian Campbell
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Campbell
Son · 1940 · age 20 · b. ~1920 · New Jersey
★ You are viewing this record
Sibling
Thomas Campbell
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Campbell
Sibling · 1940 · age 15
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 — Camden-County, New Jersey
Open full size
1940 US Federal Census — Camden-County, New Jersey
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-02396-00464)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charles S Kerr | 38 | Head | Burner | Scotland |
| 2 | Catherine Kerr | 34 | Wife | Seamstress | Pennsylvania |
| 3 | Adeline Kerr | 13 | Daughter | — | New Jersey |
| 4 | Walter Mckay | 23 | Brother-in-law | Painter | Pennsylvania |
| 5 | Jacob Herrington | 61 | Head | Painter | Pennsylvania |
| 6 | Emma Herrington | 60 | Wife | — | Pennsylvania |
| 7 | Walter Smith | 38 | Head | Painter | New Jersey |
| 8 | Florence Smith | 33 | Wife | — | New Jersey |
| 9 | Florence Smith | 14 | Daughter | — | New Jersey |
| 10 | James Smith | 12 | Son | — | New Jersey |
| 11 | Betty Smith | 9 | Daughter | — | New Jersey |
| 12 | Aaron Smith | 60 | Father | — | New Jersey |
| 13 | Emily Smith | 19 | Sister | Assembler | New Jersey |
| 14 | John Campbell | 58 | Head | Pipefitter | England |
| 15 | Lillian Campbell | 55 | Wife | — | New Jersey |
| 16 | John Campbell THIS PERSON | 20 | Son | Engine Mechanic | New Jersey |
| 17 | Robert Campbell | 15 | Son | — | New Jersey |
| 18 | Thomas Campbell | 13 | Son | — | New Jersey |
| 19 | Alexander Kerr | 63 | Head | Carpenter | Scotland |
| 20 | Mary Kerr | 57 | Wife | — | Scotland |
| 21 | James Kerr | 35 | Son | Labor | Scotland |
| 22 | Alexander Kerr | 32 | Son | Janitor | Scotland |
| 23 | Margaret Kerr | 26 | Daughter | Biller | Scotland |
| 24 | Ann Kerr | 22 | Daughter | Preparatory | Scotland |
| 25 | Frederick Kerr | 16 | Son | — | New Jersey |
| 26 | Elizabeth Thorne | 45 | Head | Pharmacist | New Jersey |
| 27 | Ethel Lee | 55 | Lodger | Principal | New Jersey |
| 28 | Howard Chester | 41 | Head | Accountant | New Jersey |
| 29 | Alice Chester | 41 | Wife | — | New Jersey |
| 30 | Louise Chester | 18 | Daughter | Stenographer | New Jersey |
| 31 | James Green | 43 | Head | Supervisor | New Jersey |
| 32 | Jennie Green | 40 | Wife | — | New Jersey |
| 33 | Mary Green | 18 | Daughter | Clerk | New Jersey |
| 34 | Elizabeth Green | 16 | Daughter | New Worker | New Jersey |
| 35 | James Green | 14 | Son | — | New Jersey |
| 36 | William Green | 11 | Son | — | New Jersey |
| 37 | Joan Green | 9 | Daughter | — | New Jersey |
| 38 | John Green | 7 | Son | — | New Jersey |
| 39 | Herbert Williams | 55 | Head | Foreman | New Jersey |
Pedigree Summary
John + 2 siblings
Gen 1 · 3 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)