CS
Calvin Smith — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Clarendon-County, South Carolina
Our Model Tree links this Calvin Smith across the 1930 and 1940 US Censuses in Clarendon-County, South Carolina (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 10-person household.
Age 17
b. ~1923
Male
Son
Born: South Carolina
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Clarendon-County, South Carolina |
| Surname | Smith |
| Given Name | Calvin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 17 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Friendship |
| 1935 Residence (County) | Clarendon |
| Additional Details | |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 40 |
| Highest Grade | No 4 |
| 1935 Residence | Same House |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Occupation | Laborer |
| Township / Ward | Friendship |
| Est. Birth Year | ~1923 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Calvin | Age | Birth yr |
|---|---|---|---|---|
| Mamie Smith | Daughter | — | 14 | ~1926 |
| Minnie Smith | Daughter | — | 19 | ~1921 |
| Wilma Smith | Daughter | — | 2 | ~1938 |
| Joe Smith | Son | — | 4 | ~1936 |
| Harvey Smith | Son | — | 8 | ~1932 |
| Joe Smith | Head | — | 45 | ~1895 |
| Nora Smith | Spouse | — | 40 | ~1900 |
| Calvin Smith | Son | — | 17 | ~1923 |
| Willie Smith | Son | — | 20 | ~1920 |
| Lou Smith | Daughter | — | 10 | ~1930 |
Census Appearances
1930
Marion, South …
Son, age 6
Marion, South Carolina · implied b. ~1924 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Calvin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 6 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1940
Clarendon-County, South …
Son, age 17
Clarendon-County, South Carolina · implied b. ~1923 — 10 household members
| Surname | Smith |
| Given Name | Calvin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 17 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Friendship |
| 1935 Residence (County) | Clarendon |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 40 |
| 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 Calvin Smith across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Calvin Smith
Son · 1940 · age 17 · b. ~1923 · South Carolina
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Sibling
Wilma Smith
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lou Smith
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mamie Smith
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Minnie Smith
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harvey Smith
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joe Smith
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Willie Smith
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 — Clarendon-County, South Carolina
Open full size
1940 US Federal Census — Clarendon-County, South Carolina
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03800-00219)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George Parson | 55 | Head | Farmer | South Carolina |
| 2 | Bennie Parson | 56 | Head | Laborer | South Carolina |
| 3 | Clara Parson | 48 | Wife | Laborer | South Carolina |
| 4 | Bennie Jr. Parson | 21 | Son | Laborer | South Carolina |
| 5 | Plemmie Parson | 19 | Daughter | — | South Carolina |
| 6 | Celestine Parson | 2 | Granddaughter | — | South Carolina |
| 7 | Willie G. Georgia | 18 | Lodger | Laborer | South Carolina |
| 8 | Bootsie Washington | 60 | Head | Farmer | South Carolina |
| 9 | Flora Washington | 32 | Wife | — | South Carolina |
| 10 | Emma Washington | 30 | Daughter | Laborer | South Carolina |
| 11 | Arthur Washington | 28 | Son | Laborer | South Carolina |
| 12 | Willie Washington | 24 | Son | Laborer | South Carolina |
| 13 | Bessie Washington | 22 | Daughter | Cook | South Carolina |
| 14 | James Washington | 18 | Son | Laborer | South Carolina |
| 15 | Robert Washington | 16 | Son | — | South Carolina |
| 16 | John Washington | 4 | Grandson | — | South Carolina |
| 17 | Charlie Washington | 2 | Grandson | — | South Carolina |
| 18 | — | None | — | — | — |
| 19 | Hamp Martin | 60 | Head | Farmer | South Carolina |
| 20 | Mander Martin | 58 | Wife | Cook | South Carolina |
| 21 | Abraham Martin | 18 | Grandson | Laborer | South Carolina |
| 22 | Leroy Martin | 16 | Grandson | — | South Carolina |
| 23 | Burnie Martin | 14 | Grandson | — | South Carolina |
| 24 | Joe Smith | 45 | Head | Laborer | South Carolina |
| 25 | Nora Smith | 40 | Wife | — | South Carolina |
| 26 | Willie Smith | 20 | Son | Laborer | South Carolina |
| 27 | Minnie Smith | 19 | Daughter | — | South Carolina |
| 28 | Calvin Smith THIS PERSON | 17 | Son | Laborer | South Carolina |
| 29 | Mamie Smith | 14 | Daughter | — | South Carolina |
| 30 | Lou Smith | 10 | Daughter | — | South Carolina |
| 31 | Harvey Smith | 8 | Son | — | South Carolina |
| 32 | Joe Jr. Smith | 4 | Son | — | South Carolina |
| 33 | Wilma Smith | 2 | Daughter | — | South Carolina |
| 34 | Ned Briggs | 50 | Head | Laborer | South Carolina |
| 35 | Laura Briggs | 45 | Wife | Cook | South Carolina |
| 36 | Carrie Briggs | 45 | Sister | — | South Carolina |
| 37 | Catherine Gibson | 59 | Head | Laundress | South Carolina |
| 38 | Sarah Gibson | 22 | Daughter | Laborer | South Carolina |
| 39 | Marie Gibson | 17 | Daughter | — | South Carolina |
| 40 | William Gibson | 30 | Son | Laborer | South Carolina |
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)