JC
John Caldwell — 1940 US Census Record
Model Tree available1940 United States Federal Census · Kings-County, New York
Our Model Tree links this John Caldwell across the 1920, 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed), with identified parents John & William — first a son (b.~1918), then head of a 5-person household.
Age 22
b. ~1918
Male
Son
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Kings-County, New York |
| Surname | Caldwell |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | N.Y.C. |
| 1935 Residence (County) | Kings |
| Additional Details | |
| Occupation | Clerk |
| Industry | Banks |
| Class of Worker | PW |
| Hours Worked | 38 |
| Income (1939) | 266 |
| Highest Grade | H 3 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | Clerk |
| Township / Ward | Nyc |
| 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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| William Caldwell | Head | — | 50 | ~1890 |
| Joseph Caldwell | Other | — | 48 | ~1892 |
| John Caldwell | Son | — | 22 | ~1918 |
| Harold Caldwell | Son | — | 20 | ~1920 |
| Helen Caldwell | Spouse | — | 47 | ~1893 |
Census Appearances
1920
Kings, New …
Son, age
Kings, New York · implied b. ~1920 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Caldwell |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
Kings, New …
Son, age 11
Kings, New York · implied b. ~1919 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Caldwell |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Kings-County, New …
Son, age 22
Kings-County, New York · implied b. ~1918 — 5 household members
| Surname | Caldwell |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | N.Y.C. |
| 1935 Residence (County) | Kings |
| Occupation | Clerk |
| Industry | Banks |
| Class of Worker | PW |
| Hours Worked | 38 |
| Income (1939) | 266 |
| Highest Grade | H 3 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
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 William Caldwell (~0.92 confidence) and father Aiden Caldwell (~0.92 confidence) and mother Helen Caldwell (~0.92 confidence) and mother Helen Caldwell (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Caldwell
b. ~1875
Source father
● Household
· direct · ~0.92
Father
William Caldwell
b. ~1890
Source father
● Household
· direct · ~0.92
Father
Aiden Caldwell
b. ~1893
Source father
● Household
· direct · ~0.92
Mother
Helen Caldwell
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Helen Caldwell
b. ~1895
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Caldwell
Son · 1940 · age 22 · b. ~1918 · New York
★ You are viewing this record
Sibling
Harold Caldwell
Sibling · 1940 · age 20
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 — Kings-County, New York
Open full size
1940 US Federal Census — Kings-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02581-00843)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Anna Rooney | 52 | Wife | H | New York |
| 2 | Anna Rooney | 24 | Daughter | Clerk | New York |
| 3 | Edward Rooney | 21 | Son | Clerk | New York |
| 4 | Margaret Halloran | 49 | Head | H | Ireland |
| 5 | John D. Halloran | 28 | Son | — | New York |
| 6 | Joseph Gahele | 30 | Head | Counterman | New York |
| 7 | Anna Gahele | 29 | Wife | H | New York |
| 8 | Father Hassan | 69 | Father | — | New York |
| 9 | Sister Josephine | 25 | Sister | Salesgirl | New York |
| 10 | Uncle Charles | 55 | Uncle | — | New York |
| 11 | William Caldwell | 50 | Head | Clerk | New York |
| 12 | Helen Caldwell | 47 | Wife | H | New York |
| 13 | John Caldwell THIS PERSON | 22 | Son | Clerk | New York |
| 14 | Harold Caldwell | 20 | Son | Messenger | New York |
| 15 | Joseph Caldwell | 48 | Brother | Clerk | New York |
| 16 | Joseph Hagerty | 59 | Head | Inspector | New York |
| 17 | Margaret Hagerty | 57 | Wife | H | New York |
| 18 | Joseph Jr. Hagerty | 37 | Son | Pressman | New York |
| 19 | Margaret Hagerty | 28 | Daughter | Secretary | New York |
| 20 | Charles Rohner | 47 | Head | Foreman | New York |
| 21 | Emma B. Rohner | 46 | Wife | H | New York |
| 22 | Edward Rohner | 25 | Son | U | New York |
| 23 | Louis Rohner | 23 | Son | Motorman | New York |
| 24 | Florence Rohner | 8 | Daughter | — | New York |
| 25 | Charles Buscher | 54 | Brother-in-law | — | Pennsylvania |
| 26 | August Buscher | 45 | Brother-in-law | Moving Man | Pennsylvania |
| 27 | Michael E. Rockford | 56 | Head | Watchman | Ireland |
| 28 | Catherine Rockford | 58 | Wife | H | Ireland |
| 29 | Rita C. Rockford | 26 | Daughter | Bookkeeper | New York |
| 30 | John Rockford | 25 | Son | Manager | New York |
| 31 | Mary Rockford | 23 | Daughter | Clerk | New York |
| 32 | Thomas M. Rockford | 21 | Son | Clerk | New York |
| 33 | Loretta Rockford | 19 | Daughter | File Clerk | New York |
| 34 | Anne Rockford | 16 | Daughter | S | New York |
| 35 | Michael D. Whelan | 33 | Head | Bartender | New York |
| 36 | Hannah Whelan | 30 | Wife | H | New York |
| 37 | Anne M. Whelan | 5 | Daughter | — | New York |
| 38 | Anna J. Whelan | 55 | Mother | H | New York |
| 39 | Edward Ryan | 73 | Head | — | Ireland |
| 40 | Catherine Ryan | 60 | Wife | H | Ireland |
Pedigree Summary
John + 1 sibling
Gen 1 · 5 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)