RC
Robert Caldwell — 1940 US Census Record
Model Tree available1940 United States Federal Census · Adair-County, Kentucky
Our Model Tree links this Robert Caldwell across the 1920, 1930 and 1940 US Censuses in Adair-County, Kentucky (XGBoost, ~Confirmed), with identified parents Otto — first a head (b.~1897), then head of a 4-person household.
Age 43
b. ~1897
Male
Head
Born: Kentucky
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Adair-County, Kentucky |
| Surname | Caldwell |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | Columbia |
| 1935 Residence (County) | Adair |
| Additional Details | |
| Occupation | Proprietor |
| Industry | Truck Line |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Occupation | Proprietor |
| Township / Ward | Columbia |
| Est. Birth Year | ~1897 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Robert Caldwell | Son | — | 12 | ~1928 |
| Rachel Caldwell | Spouse | — | 35 | ~1905 |
| David Caldwell | Son | — | 11 | ~1929 |
| Robert Caldwell | Head | — | 43 | ~1897 |
Census Appearances
1920
Adair, Kentucky
Son, age 22
Adair, Kentucky · implied b. ~1898 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Caldwell |
| Given Name | Robert D |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | Oa |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1930
Adair, Kentucky
Head, age 32
Adair, Kentucky · implied b. ~1898 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Caldwell |
| Given Name | Robert L. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Kentucky |
| Age at First Marriage | 28 |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Occupation | Live Stock |
| Industry | Buying & Selling |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 12 |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Adair-County, Kentucky
Head, age 43
Adair-County, Kentucky · implied b. ~1897 — 4 household members
| Surname | Caldwell |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | Columbia |
| 1935 Residence (County) | Adair |
| Occupation | Proprietor |
| Industry | Truck Line |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
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 Robert Caldwell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Otto Caldwell (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Otto Caldwell
b. ~1878
Source father
● Household
· direct · ~0.92
This person
Anchor record
Robert Caldwell
Head · 1940 · age 43 · b. ~1897 · Kentucky
★ 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 — Adair-County, Kentucky
Open full size
1940 US Federal Census — Adair-County, Kentucky
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01276-00417)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Fannie E. Walker | 41 | Wife | — | Kentucky |
| 42 | Charles Walker | 19 | Son | Nya Worker | Kentucky |
| 43 | Annie Walker | 15 | Daughter | — | Kentucky |
| 44 | John Lee Derins | 33 | Head | Mechanic | Kentucky |
| 45 | Christine Derins | 27 | Wife | — | Kentucky |
| 46 | Lester A. Furkins | 70 | Head | — | Kentucky |
| 47 | Julia Furkins | 50 | Wife | — | Texas |
| 48 | George Hancock | 46 | Head | — | Kentucky |
| 49 | Frances Hancock | 45 | Wife | Proprietor | Kentucky |
| 50 | Anna Mary Hancock | 21 | Daughter | Clerk | Kentucky |
| 51 | Georgia Hancock | 12 | Daughter | — | Kentucky |
| 52 | Steward Hutchison | 46 | Head | Crusher | Kentucky |
| 53 | Alice Hutchison | 30 | Wife | — | Kentucky |
| 54 | Iola Walker | 71 | Head | — | Kentucky |
| 55 | Nat Walker | 48 | Son-in-law | Farmer | Kentucky |
| 56 | Ella Walker | 42 | Daughter | Florist | Kentucky |
| 57 | William Walker | 19 | Son | — | Kentucky |
| 58 | George M. Derins | 37 | Head | Electrician | Kentucky |
| 59 | Millie Derins | 37 | Wife | — | Kentucky |
| 60 | Norma Derins | 11 | Daughter | — | Kentucky |
| 61 | Robert Caldwell THIS PERSON | 43 | Head | Proprietor | Kentucky |
| 62 | Rachel Caldwell | 35 | Wife | — | Kentucky |
| 63 | Robert Caldwell | 12 | Son | — | Kentucky |
| 64 | David Caldwell | 11 | Son | — | Kentucky |
| 65 | Mag Mitchell | 57 | Head | — | Kentucky |
| 66 | Frances Montgomery | 58 | Lodger | Teacher | Kentucky |
| 67 | Porter Conover | 27 | Head | Truck Driver | Kentucky |
| 68 | Julia Conover | 25 | Wife | — | Kentucky |
| 69 | William Conover | 2 | Son | — | Kentucky |
| 70 | Hubert Watson | 48 | Head | Farmer | Arkansas |
| 71 | Lilla Watson | 44 | Wife | — | Kentucky |
| 72 | Hollis Watson | 9 | Son | — | Kentucky |
| 73 | Henry Moore | 46 | Head | Proprietor | Kentucky |
| 74 | Sarah Moore | 14 | Daughter | — | Kentucky |
| 75 | Charity Moore | 70 | Mother | — | Kentucky |
| 76 | Julia Moore | 48 | Sister | Proprietor | Kentucky |
| 77 | Clarence E. Keen | 55 | Head | Supervisor | Kentucky |
| 78 | Emma Keen | 55 | Wife | — | Kentucky |
| 79 | Alene Keen | 27 | Daughter | Teacher | Kentucky |
| 80 | Lyda Mercer | 60 | Head | — | Kentucky |
Pedigree Summary
Robert
Gen 1 · 1 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)