RT
Robert Thomas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Darlington-County, South Carolina
Our Model Tree links this Robert Thomas across the 1920, 1930 and 1940 US Censuses in Darlington-County, South Carolina (XGBoost, ~Confirmed), with identified parents Elliot & Maggie — first a head (b.~1913), then head of a 6-person household.
Age 27
b. ~1913
Male
Head
Born: South Carolina
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Darlington-County, South Carolina |
| Surname | Thomas |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 27 |
| Marital Status | Married |
| Birthplace | South Carolina |
| 1935 Residence (City) | Hartsville |
| 1935 Residence (County) | Darlington |
| Additional Details | |
| Occupation | Day Laborer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 40 |
| Highest Grade | No 0 |
| 1935 Residence | Same House |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Occupation | Laborer |
| Township / Ward | Hartsville |
| Est. Birth Year | ~1913 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Mary Thomas | Daughter | — | 1 | ~1939 |
| Ruby Thomas | Daughter | — | 6 | ~1934 |
| Robert Thomas | Head | — | 27 | ~1913 |
| Robert Thomas | Son | — | 4 | ~1936 |
| R Thomas | Son | — | 8 | ~1932 |
| Thelma Thomas | Spouse | — | 24 | ~1916 |
Census Appearances
1920
Darlington, South …
Son, age 8
Darlington, South Carolina · implied b. ~1912 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Robert |
| Relationship to Head | son |
| Sex | M |
| Color / Race | Black |
| Age | 8 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Occupation | none |
| Can Read | No |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1930
Darlington, South …
Son, age 19
Darlington, South Carolina · implied b. ~1911 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 19 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Occupation | Laborer |
| Industry | General Farm |
| Class of Worker | W |
| Can Read/Write | No |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1940
Darlington-County, South …
Head, age 27
Darlington-County, South Carolina · implied b. ~1913 — 6 household members
| Surname | Thomas |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 27 |
| Marital Status | Married |
| Birthplace | South Carolina |
| 1935 Residence (City) | Hartsville |
| 1935 Residence (County) | Darlington |
| Occupation | Day Laborer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 40 |
| Highest Grade | No 0 |
| 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 Robert Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Elliot Thomas (~0.92 confidence) and mother Maggie Thomas (~0.92 confidence) and mother Maggie Thomas (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Elliot Thomas
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Maggie Thomas
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Maggie Thomas
b. ~1885
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Thomas
Head · 1940 · age 27 · b. ~1913 · 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 — Darlington-County, South Carolina
Open full size
1940 US Federal Census — Darlington-County, South Carolina
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03803-00585)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Randolph Gillespie | 62 | Head | Farmer | South Carolina |
| 42 | Mattie Gillespie | 66 | Wife | — | South Carolina |
| 43 | Irene Gillespie | 20 | Daughter | — | South Carolina |
| 44 | Anna Gillespie | 17 | Daughter | — | South Carolina |
| 45 | Caroline Lockwood | 76 | Aunt | — | South Carolina |
| 46 | Robert Thomas THIS PERSON | 27 | Head | Day Laborer | South Carolina |
| 47 | Thelma Thomas | 24 | Wife | — | South Carolina |
| 48 | R. W. Thomas | 8 | Son | — | South Carolina |
| 49 | Ruby Lee Thomas | 6 | Daughter | — | South Carolina |
| 50 | Robert Jr. Thomas | 4 | Son | — | South Carolina |
| 51 | Mary Thomas | 1 | Daughter | — | South Carolina |
| 52 | Bill Lucky | 24 | Head | Day Laborer | South Carolina |
| 53 | Carrie Lucky | 21 | Wife | — | South Carolina |
| 54 | James Lee Lucky | 6 | Son | — | South Carolina |
| 55 | W. J. Lucky | 5 | Son | — | South Carolina |
| 56 | Pearlie Mae Lucky | 4 | Daughter | — | South Carolina |
| 57 | Annie Mae Lucky | 3 | Daughter | — | South Carolina |
| 58 | Odelle Lucky | 2 | Son | — | South Carolina |
| 59 | Golden Lucky | 0 | Son | — | South Carolina |
| 60 | Arthur Thomas | 24 | Head | Day Laborer | South Carolina |
| 61 | Emma Thomas | 23 | Wife | — | South Carolina |
| 62 | Flossie Lee Thomas | 9 | Daughter | — | South Carolina |
| 63 | Ruby Lee Thomas | 7 | Daughter | — | South Carolina |
| 64 | Mary Lee Thomas | 5 | Daughter | — | South Carolina |
| 65 | Jeannette Thomas | 3 | Daughter | — | South Carolina |
| 66 | Margarete Thomas | 1 | Daughter | — | South Carolina |
| 67 | Rennick Bailey | 28 | Head | Day Laborer | South Carolina |
| 68 | Laura Bailey | 26 | Wife | — | South Carolina |
| 69 | Lottie Mae Bailey | 8 | Daughter | — | South Carolina |
| 70 | Sara Lee Bailey | 4 | Daughter | — | South Carolina |
| 71 | Walter Thomas | 23 | Head | Day Laborer | South Carolina |
| 72 | Ruthy Mae Thomas | 18 | Wife | — | South Carolina |
| 73 | Woodrow Thomas | 2 | Son | — | South Carolina |
| 74 | Monroe Thomas | 2 | Son | — | South Carolina |
| 75 | James Thomas | 34 | Head | Day Laborer | South Carolina |
| 76 | Annie Mae Thomas | 31 | Wife | — | South Carolina |
| 77 | Tom Bailey | 33 | Head | Day Laborer | South Carolina |
| 78 | Pearle Bailey | 28 | Wife | — | South Carolina |
| 79 | Jewell Wilson | 9 | Granddaughter | — | South Carolina |
| 80 | Johnny Wilson | 7 | Grandson | — | South Carolina |
Pedigree Summary
Robert
Gen 1 · 3 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)