JC
John Caldwell — 1940 US Census Record
Model Tree available1940 United States Federal Census · Calhoun-County, South Carolina
Our Model Tree links this John Caldwell across the 1920, 1930 and 1940 US Censuses in Calhoun-County, South Carolina (XGBoost, ~Confirmed), with identified parents Irvin & Minnie — first a head (b.~1900), then head of a 6-person household.
Age 40
b. ~1900
Male
Head
Born: South Carolina
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Calhoun-County, South Carolina |
| Surname | Caldwell |
| Given Name | John F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 40 |
| Marital Status | Married |
| Birthplace | South Carolina |
| 1935 Residence (City) | Caw-Caw |
| 1935 Residence (County) | Calhoun |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | E |
| Hours Worked | 55 |
| Income (1939) | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same house |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Occupation | Farmer |
| Township / Ward | Cawcaw |
| 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| May Caldwell | Daughter | — | 11 | ~1929 |
| John Caldwell | Head | — | 40 | ~1900 |
| Theo Caldwell | Son | — | 17 | ~1923 |
| John Caldwell | Son | — | 6 | ~1934 |
| Sammie Caldwell | Son | — | 13 | ~1927 |
| Hallie Caldwell | Spouse | — | 35 | ~1905 |
Census Appearances
1920
Calhoun, South …
Son, age 15
Calhoun, South Carolina · implied b. ~1905 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Caldwell |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 15 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1930
Calhoun, South …
Head, age 25
Calhoun, South Carolina · implied b. ~1905 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Caldwell |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 25 |
| Marital Status | Married |
| Birthplace | South Carolina |
| Age at First Marriage | 24 |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Occupation | Blacksmith |
| Industry | Blacksmith shop |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 4 |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1940
Calhoun-County, South …
Head, age 40
Calhoun-County, South Carolina · implied b. ~1900 — 6 household members
| Surname | Caldwell |
| Given Name | John F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 40 |
| Marital Status | Married |
| Birthplace | South Carolina |
| 1935 Residence (City) | Caw-Caw |
| 1935 Residence (County) | Calhoun |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | E |
| Hours Worked | 55 |
| Income (1939) | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same house |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
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 Irvin Caldwell (~0.92 confidence) and mother Minnie Caldwell (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Irvin Caldwell
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Minnie Caldwell
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Caldwell
Head · 1940 · age 40 · b. ~1900 · South Carolina
★ 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 — Calhoun-County, South Carolina
Open full size
1940 US Federal Census — Calhoun-County, South Carolina
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03792-00223)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Willie Baxter | 55 | Head | Farmer | South Carolina |
| 42 | Abbie Baxter | 45 | Wife | Housekeeper | South Carolina |
| 43 | Georgia Baxter | 18 | Daughter | Farm Laborer | South Carolina |
| 44 | Emma Baxter | 17 | Daughter | Farm Laborer | South Carolina |
| 45 | Willie J. Baxter | 16 | Son | Farm Laborer | South Carolina |
| 46 | Philis May Baxter | 13 | Daughter | — | South Carolina |
| 47 | Eugene Baxter | 20 | Head | Farmer | South Carolina |
| 48 | Beulah Baxter | 20 | Wife | Farm Laborer | South Carolina |
| 49 | Willie J. Baxter | 2 | Son | — | South Carolina |
| 50 | John F. Caldwell THIS PERSON | 40 | Head | Farmer | South Carolina |
| 51 | Hallie Caldwell | 35 | Wife | — | South Carolina |
| 52 | Theo Caldwell | 17 | Son | Farm Laborer | South Carolina |
| 53 | Sammie C. Caldwell | 13 | Son | — | South Carolina |
| 54 | May Ellen Caldwell | 11 | Daughter | — | South Carolina |
| 55 | John Caldwell | 6 | Son | — | South Carolina |
| 56 | Lucas Clemen | 55 | Head | Farmer | South Carolina |
| 57 | Carrie B. Clemen | 26 | Wife | Farm Laborer | South Carolina |
| 58 | Hercules Clemen | 17 | Son | Farm Laborer | South Carolina |
| 59 | Mince Clemen | 18 | Nephew | Farm Laborer | South Carolina |
| 60 | John Elmore | 45 | Head | Farmer | South Carolina |
| 61 | Mary Ann Elmore | 33 | Wife | Housekeeper | South Carolina |
| 62 | Fred Elmore | 20 | Son | Farm Laborer | South Carolina |
| 63 | John Elmore | 19 | Son | Farm Laborer | South Carolina |
| 64 | Daisy Elmore | 18 | Daughter | Farm Laborer | South Carolina |
| 65 | Azile Elmore | 16 | Daughter | — | South Carolina |
| 66 | Sue Elmore | 13 | Daughter | — | South Carolina |
| 67 | Murry Elmore | 10 | Son | — | South Carolina |
| 68 | James Elmore | 8 | Son | — | South Carolina |
| 69 | Willie Elmore | 5 | Son | — | South Carolina |
| 70 | Rose Nell Elmore | 4 | Daughter | — | South Carolina |
| 71 | Elenora Elmore | 80 | Head | — | South Carolina |
| 72 | West Glover | 76 | Head | — | South Carolina |
| 73 | Sam Jones Smith | 66 | Head | Farmer | South Carolina |
| 74 | Anna J. Smith | 68 | Wife | — | South Carolina |
| 75 | Bryant Pearl Smith | 29 | Daughter | — | South Carolina |
| 76 | Barrie Smith | 22 | Son | Farmer | South Carolina |
| 77 | Bessie Lou Smith | 18 | Daughter | — | South Carolina |
| 78 | Rosa Lee Williams | 5 | Head | Farm Laborer | South Carolina |
| 79 | Deela Williams | 18 | Daughter | — | South Carolina |
| 80 | Rosa May Williams | 11 | Daughter | — | South Carolina |
Pedigree Summary
John
Gen 1 · 2 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)