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John Caldwell — 1940 US Census Record
Model Tree available1940 United States Federal Census · Jefferson-County, Pennsylvania
Our Model Tree links this John Caldwell across the 1920, 1930 and 1940 US Censuses in Jefferson-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents John & John — first a son (b.~1918), then head of a 8-person household.
Age 22
b. ~1918
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Pennsylvania |
| Surname | Caldwell |
| Given Name | John P |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | R |
| Additional Details | |
| Occupation | Janitor |
| Industry | Hospital |
| Class of Worker | PW |
| Hours Worked | 72 |
| Income (1939) | 740 |
| Highest Grade | No 8 |
| 1935 Residence | No 5801 |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Janitor |
| Township / Ward | Corsica |
| Est. Birth Year | ~1918 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mary Caldwell | Daughter | — | 15 | ~1925 |
| Doris Caldwell | Daughter | — | 12 | ~1928 |
| Helen Caldwell | Daughter | — | 26 | ~1914 |
| Betty Caldwell | Daughter | — | 17 | ~1923 |
| John Caldwell | Head | — | 54 | ~1886 |
| Michael Caldwell | Son | — | 9 | ~1931 |
| John Caldwell | Son | — | 22 | ~1918 |
| Elizabeth Caldwell | Spouse | — | 52 | ~1888 |
Census Appearances
1920
Jefferson, Pennsylvania
Son, age 2
Jefferson, Pennsylvania · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Caldwell |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Jefferson, Pennsylvania
Son, age 12
Jefferson, Pennsylvania · implied b. ~1918 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Caldwell |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Jefferson-County, Pennsylvania
Son, age 22
Jefferson-County, Pennsylvania · implied b. ~1918 — 8 household members
| Surname | Caldwell |
| Given Name | John P |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | R |
| Occupation | Janitor |
| Industry | Hospital |
| Class of Worker | PW |
| Hours Worked | 72 |
| Income (1939) | 740 |
| Highest Grade | No 8 |
| 1935 Residence | No 5801 |
| 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 Caldwell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Caldwell (~0.92 confidence) and father John Caldwell (~0.92 confidence) and mother Elizabeth Caldwell (~0.92 confidence) and mother Elizabeth Caldwell (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Caldwell
b. ~1886
Source father
● Household
· direct · ~0.92
Father
John Caldwell
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Elizabeth Caldwell
b. ~1888
Source mother
● Household
· direct · ~0.92
Mother
Elizabeth Caldwell
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Caldwell
Son · 1940 · age 22 · b. ~1918 · Pennsylvania
★ You are viewing this record
Sibling
Mary Caldwell
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Michael Caldwell
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Caldwell
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Caldwell
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doris Caldwell
Sibling · 1940 · age 12
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 — Jefferson-County, Pennsylvania
Open full size
1940 US Federal Census — Jefferson-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03519-00337)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Jennie L Moore | 55 | Wife | — | Pennsylvania |
| 42 | Harold W Moore | 24 | Son | — | Pennsylvania |
| 43 | Blair Moore | 22 | Son | — | Pennsylvania |
| 44 | Mary E Moore | 19 | Daughter | — | Pennsylvania |
| 45 | Virginia M Moore | 17 | Daughter | — | Pennsylvania |
| 46 | John R Lininger | 45 | Head | Laborer | Pennsylvania |
| 47 | Margaret C Lininger | 44 | Wife | — | Pennsylvania |
| 48 | Pearl V Walter | 43 | Head | Laborer | Pennsylvania |
| 49 | Mary S Walter | 34 | Wife | — | Pennsylvania |
| 50 | Dorothy E Walter | 15 | Daughter | — | Pennsylvania |
| 51 | Floyd E Walter | 15 | Son | — | Pennsylvania |
| 52 | Lester E Walter | 12 | Son | — | Pennsylvania |
| 53 | Glendora F Walter | 10 | Daughter | — | Pennsylvania |
| 54 | Richard C Walter | 9 | Son | — | Pennsylvania |
| 55 | Ronald C Walter | 6 | Son | — | Pennsylvania |
| 56 | Pearl J Walter | 3 | Son | — | Pennsylvania |
| 57 | Edwin K Walter | 1 | Son | — | Pennsylvania |
| 58 | Harry W Harriger | 59 | Head | Laborer | Pennsylvania |
| 59 | Olive J Harriger | 58 | Wife | — | Pennsylvania |
| 60 | Lucille E Harriger | 19 | Daughter | — | Pennsylvania |
| 61 | James S Harriger | 70 | Brother | — | Pennsylvania |
| 62 | Frank C Cavanaugh | 58 | Head | Laborer | Pennsylvania |
| 63 | Margaret C Cavanaugh | 52 | Wife | — | Pennsylvania |
| 64 | Donald R Cavanaugh | 16 | Son | — | Pennsylvania |
| 65 | John D Kennedy | 38 | Head | Laborer | Pennsylvania |
| 66 | Elizabeth Kennedy | 37 | Wife | — | Pennsylvania |
| 67 | Dorothy V Kennedy | 9 | Daughter | — | Pennsylvania |
| 68 | Fay M Kennedy | 8 | Daughter | — | Pennsylvania |
| 69 | John E Caldwell | 54 | Head | Janitor | Pennsylvania |
| 70 | Elizabeth M Caldwell | 52 | Wife | — | Pennsylvania |
| 71 | Helen F Caldwell | 26 | Daughter | Teacher | Pennsylvania |
| 72 | John P Caldwell THIS PERSON | 22 | Son | Janitor | Pennsylvania |
| 73 | Betty J Caldwell | 17 | Daughter | — | Pennsylvania |
| 74 | Mary K Caldwell | 15 | Daughter | — | Pennsylvania |
| 75 | Doris J Caldwell | 12 | Daughter | — | Pennsylvania |
| 76 | Michael J Caldwell | 9 | Son | — | Pennsylvania |
| 77 | William W Love | 47 | Head | Glass Worker | Pennsylvania |
| 78 | Martha E Love | 31 | Wife | — | Pennsylvania |
| 79 | John E Love | 9 | Son | — | Pennsylvania |
| 80 | Cora L Love | 1 | Daughter | — | Pennsylvania |
Pedigree Summary
John + 5 siblings
Gen 1 · 4 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)