JC
James Caldwell — 1940 US Census Record
Model Tree available1940 United States Federal Census · Westmoreland-County, Pennsylvania
Our Model Tree links this James Caldwell across the 1910, 1920, 1930 and 1940 US Censuses in Westmoreland-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents James & James — first a head (b.~1908), then head of a 3-person household.
Age 32
b. ~1908
Male
Head
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Westmoreland-County, Pennsylvania |
| Surname | Caldwell |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Derry Borough |
| 1935 Residence (County) | Westmoreland |
| Additional Details | |
| Occupation | Soldering |
| Industry | Insulator Mfg |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | 8 |
| 1935 Residence | Same house |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Soldering |
| Township / Ward | Derry Borough |
| Est. Birth Year | ~1908 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| James Caldwell | Head | — | 32 | ~1908 |
| James Caldwell | Son | — | 12 | ~1928 |
| Tirzah Caldwell | Spouse | — | 32 | ~1908 |
Census Appearances
1910
Westmoreland, Pennsylvania
Son, age
Westmoreland, Pennsylvania · implied b. ~1910 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Caldwell |
| Given Name | James |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| 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 |
1920
Westmoreland, Pennsylvania
Son, age 10
Westmoreland, Pennsylvania · implied b. ~1910 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Caldwell |
| Given Name | James H Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Westmoreland, Pennsylvania
Son, age 21
Westmoreland, Pennsylvania · implied b. ~1909 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Caldwell |
| Given Name | James Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 21 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Laborer |
| Industry | Stone works |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Westmoreland-County, Pennsylvania
Head, age 32
Westmoreland-County, Pennsylvania · implied b. ~1908 — 3 household members
| Surname | Caldwell |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Derry Borough |
| 1935 Residence (County) | Westmoreland |
| Occupation | Soldering |
| Industry | Insulator Mfg |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | 8 |
| 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 James Caldwell across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Caldwell (~0.92 confidence) and father James Caldwell (~0.92 confidence) and father James Caldwell (~0.92 confidence) and mother Mary Caldwell (~0.92 confidence) and mother Mary Caldwell (~0.92 confidence) and mother Hanna Caldwell (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Caldwell
b. ~1874
Source father
● Household
· direct · ~0.92
Father
James Caldwell
b. ~1875
Source father
● Household
· direct · ~0.92
Father
James Caldwell
b. ~1877
Source father
● Household
· direct · ~0.92
Mother
Mary Caldwell
b. ~1878
Source mother
● Household
· direct · ~0.92
Mother
Mary Caldwell
b. ~1879
Source mother
● Household
· direct · ~0.92
Mother
Hanna Caldwell
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Caldwell
Head · 1940 · age 32 · b. ~1908 · 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 — Westmoreland-County, Pennsylvania
Open full size
1940 US Federal Census — Westmoreland-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03629-00119)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Edward Shipman | 55 | Head | Carpenter | Pennsylvania |
| 42 | William Shipman | 23 | Son | Laborer | Pennsylvania |
| 43 | Robert Shipman | 20 | Son | Laborer | Pennsylvania |
| 44 | George Ab Shipman | 18 | Son | Ditch Digger | Pennsylvania |
| 45 | Ida Shipman | 17 | Daughter | Houseworker | Pennsylvania |
| 46 | Violet Shipman | 14 | Daughter | — | Pennsylvania |
| 47 | Evelyn Shipman | 12 | Daughter | — | Pennsylvania |
| 48 | Walter Shipman | 11 | Son | — | Pennsylvania |
| 49 | Ruth Shipman | 9 | Daughter | — | Pennsylvania |
| 50 | Carl E. Geary | 34 | Head | Mechanic | Pennsylvania |
| 51 | Cecilia Geary | 29 | Wife | — | Pennsylvania |
| 52 | Carl Geary | 12 | Son | — | Pennsylvania |
| 53 | John Geary | 10 | Son | — | Pennsylvania |
| 54 | James Caldwell THIS PERSON | 32 | Head | Soldering | Pennsylvania |
| 55 | Tirzah Caldwell | 32 | Wife | — | Pennsylvania |
| 56 | James F. Caldwell | 12 | Son | — | Pennsylvania |
| 57 | W. W. G. Foster | 67 | Head | Trainman | Pennsylvania |
| 58 | Minnie E. Foster | 64 | Wife | — | Pennsylvania |
| 59 | L. M. Foster | 31 | Son | Salesman | Pennsylvania |
| 60 | Ray Short | 35 | Roomer | Student Engineer | Tennessee |
| 61 | Addie E. Richardson | 78 | Head | — | Pennsylvania |
| 62 | Georgia Little | 54 | Daughter | Gasoline Attendant | Pennsylvania |
| 63 | Philip Mcclane | 49 | Head | Stat. Engineer | Pennsylvania |
| 64 | Rachel Mcclane | 40 | Wife | — | Pennsylvania |
| 65 | Phyllis Mcclane | 8 | Daughter | — | Pennsylvania |
| 66 | Viola R. Taylor | 14 | Niece | — | Pennsylvania |
| 67 | Charles Fowler | 44 | Brother-in-law | Laborer | Pennsylvania |
| 68 | Steven Zambik | 38 | Head | Clerk | Pennsylvania |
| 69 | Mabel Zambik | 40 | Wife | — | Pennsylvania |
| 70 | Ronald Zambik | 15 | Son | — | Pennsylvania |
| 71 | Richard P. Neil | 38 | Head | Trainman | Pennsylvania |
| 72 | Anna M. E. Neil | 36 | Wife | — | Pennsylvania |
| 73 | Anna Neil | 17 | Daughter | — | Pennsylvania |
| 74 | Nelson Neil | 16 | Son | — | Pennsylvania |
| 75 | Doris Anna Neil | 12 | Daughter | — | Pennsylvania |
| 76 | James E. Neil | 10 | Son | — | Pennsylvania |
| 77 | James O. Neil | 64 | Head | Crane Operator | Pennsylvania |
| 78 | Emma Mabel Neil | 59 | Wife | — | Pennsylvania |
| 79 | June Rose Thirsk | 15 | Grand daughter | — | Pennsylvania |
| 80 | Paul D. Moore | 32 | Head | Grinder | Pennsylvania |
Pedigree Summary
James
Gen 1 · 6 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)