CS
Calvin Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Knox-County, Kentucky
Our Model Tree links this Calvin Smith across the 1920, 1930 and 1940 US Censuses in Knox-County, Kentucky (XGBoost, ~Confirmed), with identified parents Bev & Martha — first a head (b.~1915), then head of a 3-person household.
Age 25
b. ~1915
Male
Head
Born: Kentucky
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Knox-County, Kentucky |
| Surname | Smith |
| Given Name | Calvin |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Clay |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | No 3 |
| 1935 Residence | Kentucky |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Occupation | Farmer |
| Township / Ward | Mag Dist 5 |
| Est. Birth Year | ~1915 |
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 Calvin | Age | Birth yr |
|---|---|---|---|---|
| Cecil Smith | Spouse | — | 21 | ~1919 |
| Calvin Smith | Head | — | 25 | ~1915 |
| Priscilla Smith | Daughter | — | 4 | ~1936 |
Census Appearances
1920
Knox, Kentucky
Son, age 6
Knox, Kentucky · implied b. ~1914 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Calvin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Can Read | Yes |
| Speaks English | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1930
Knox, Kentucky
Son, age 16
Knox, Kentucky · implied b. ~1914 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Calvin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Knox-County, Kentucky
Head, age 25
Knox-County, Kentucky · implied b. ~1915 — 3 household members
| Surname | Smith |
| Given Name | Calvin |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Clay |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | No 3 |
| 1935 Residence | Kentucky |
| 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 Calvin Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Bev Smith (~0.92 confidence) and mother Martha Smith (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Bev Smith
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Martha Smith
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Calvin Smith
Head · 1940 · age 25 · b. ~1915 · 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 — Knox-County, Kentucky
Open full size
1940 US Federal Census — Knox-County, Kentucky
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01326-01036)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ethel Warren | 20 | Daughter in law | — | Kentucky |
| 2 | Charley Brumley | 37 | Head | Farmer | Kentucky |
| 3 | Bernice Brumley | 19 | Wife | — | Kentucky |
| 4 | Charles Jr Brumley | 12 | Son | — | Kentucky |
| 5 | Darrel Leon Brumley | 10 | Son | — | Kentucky |
| 6 | Bettie Brumley | 8 | Daughter | — | Kentucky |
| 7 | Vera Lee Brumley | 6 | Daughter | — | Kentucky |
| 8 | Barbara Ann Brumley | 4 | Daughter | — | Kentucky |
| 9 | Jimmie Joe Brumley | 1 | Son | — | Kentucky |
| 10 | Moses B Jackson | 35 | Head | Farmer | Kentucky |
| 11 | Deborah Jackson | 35 | Wife | — | Kentucky |
| 12 | Virginia Jackson | 6 | Daughter | — | Kentucky |
| 13 | Gertie Jackson | 3 | Daughter | — | Kentucky |
| 14 | Jessie Fay Jackson | 2 | Daughter | — | Kentucky |
| 15 | Million Q Gambrel | 44 | Head | Farmer | Kentucky |
| 16 | Mellie Gambrel | 39 | Wife | — | Kentucky |
| 17 | Monie Gambrel | 15 | Daughter | — | Kentucky |
| 18 | Edith Gambrel | 12 | Daughter | — | Kentucky |
| 19 | Ira Gambrel | 8 | Daughter | — | Kentucky |
| 20 | Charles Gambrel | 3 | Daughter | — | Kentucky |
| 21 | Opal Fay Gambrel | 0 | Daughter | — | Kentucky |
| 22 | Matt Hammons | 41 | Head | Farmer | Kentucky |
| 23 | Maggie Hammons | 43 | Wife | — | Kentucky |
| 24 | Bert Hammons | 22 | Son | Laborer | Kentucky |
| 25 | Charley Hammons | 19 | Son | Laborer | Kentucky |
| 26 | Gene Hammons | 15 | Son | Laborer | Kentucky |
| 27 | Hazel Hammons | 10 | Daughter | — | Kentucky |
| 28 | Eva Hammons | 6 | Daughter | — | Kentucky |
| 29 | Clinton Hammons | 5 | Son | — | Kentucky |
| 30 | Ray Hammons | 2 | Son | — | Kentucky |
| 31 | Walter Q Smallwood | 30 | Head | Farmer | Kentucky |
| 32 | Mary Smallwood | 38 | Wife | — | Kentucky |
| 33 | Hugh Smallwood | 5 | Son | — | Kentucky |
| 34 | Woodrow Smallwood | 3 | Son | — | Kentucky |
| 35 | R Brummett | 65 | Head | Farmer | Kentucky |
| 36 | Rebecca Q Brummett | 66 | Wife | — | Kentucky |
| 37 | Henry Brummett | 23 | Son | Farmer | Kentucky |
| 38 | Calvin Smith THIS PERSON | 25 | Head | Farmer | Kentucky |
| 39 | Cecil Smith | 21 | Wife | — | Kentucky |
| 40 | Priscilla Smith | 4 | Daughter | — | Kentucky |
Pedigree Summary
Calvin
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)