JT
John Thomas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Sumter-County, South Carolina
Our Model Tree links this John Thomas across the 1920, 1930 and 1940 US Censuses in Sumter-County, South Carolina (XGBoost, ~Confirmed), with identified parents Joe & Hatter — first a head (b.~1910), then head of a 7-person household.
Age 30
b. ~1910
Male
Head
Born: South Carolina
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Sumter-County, South Carolina |
| Surname | Thomas |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 30 |
| Marital Status | Married |
| Birthplace | South Carolina |
| 1935 Residence (City) | Mayesville |
| 1935 Residence (County) | Sumter |
| Additional Details | |
| Occupation | Laborer |
| Industry | Pulping plant |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 400 |
| Highest Grade | No 1 |
| 1935 Residence | Same place |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Occupation | Laborer |
| Township / Ward | Mayesville |
| Est. Birth Year | ~1910 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Agnes Thomas | Daughter | — | 5 | ~1935 |
| Mary Thomas | Daughter | — | 9 | ~1931 |
| John Thomas | Head | — | 30 | ~1910 |
| Willie Thomas | Son | — | 8 | ~1932 |
| Albertis Thomas | Son | — | ~1940 | |
| Elijah Thomas | Son | — | 11 | ~1929 |
| Lizzie Thomas | Spouse | — | 29 | ~1911 |
Census Appearances
1920
Lee, South …
Son, age 10
Lee, South Carolina · implied b. ~1910 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | John M |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 10 |
| 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
Lee, South …
Son, age 19
Lee, South Carolina · implied b. ~1911 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | John |
| 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 | Odd jobs |
| Class of Worker | 7899 W |
| Can Read/Write | Yes |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1940
Sumter-County, South …
Head, age 30
Sumter-County, South Carolina · implied b. ~1910 — 7 household members
| Surname | Thomas |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 30 |
| Marital Status | Married |
| Birthplace | South Carolina |
| 1935 Residence (City) | Mayesville |
| 1935 Residence (County) | Sumter |
| Occupation | Laborer |
| Industry | Pulping plant |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 400 |
| Highest Grade | No 1 |
| 1935 Residence | Same place |
| 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 Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Joe Thomas (~0.92 confidence) and father Hatter Thomas (~0.92 confidence) and mother Lizzie Thomas (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Joe Thomas
b. ~1880
Source father
● Household
· direct · ~0.92
Father
Hatter Thomas
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Lizzie Thomas
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Thomas
Head · 1940 · age 30 · b. ~1910 · 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 — Sumter-County, South Carolina
Open full size
1940 US Federal Census — Sumter-County, South Carolina
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03841-00157)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lucile Bradley | 15 | Daughter | — | South Carolina |
| 42 | Dimmie Bradley | 10 | Son | — | South Carolina |
| 43 | Essie Autie Bradley | 8 | Daughter | — | South Carolina |
| 44 | James Jr. Bradley | 5 | Son | — | South Carolina |
| 45 | Willie Colclough | 28 | Head | Laborer | South Carolina |
| 46 | Satarah Colclough | 26 | Wife | Maid | South Carolina |
| 47 | James Colclough | 17 | Son | — | South Carolina |
| 48 | Flora Jenkins | 43 | Head | — | South Carolina |
| 49 | Pauline Cooper | 21 | Boarder | Maid | South Carolina |
| 50 | Juanita Cooper | 7 | Daughter | — | South Carolina |
| 51 | Rebecca Cooper | 6 | Daughter | — | South Carolina |
| 52 | Wilbur Cooper | 5 | Son | — | South Carolina |
| 53 | John Thomas THIS PERSON | 30 | Head | Laborer | South Carolina |
| 54 | Lizzie Thomas | 29 | Wife | — | South Carolina |
| 55 | Elijah Thomas | 11 | Son | — | South Carolina |
| 56 | Mary Gertrude Thomas | 9 | Daughter | — | South Carolina |
| 57 | Willie James Thomas | 8 | Son | — | South Carolina |
| 58 | Agnes Thomas | 5 | Daughter | — | South Carolina |
| 59 | Albertis Thomas | 0 | Son | — | South Carolina |
| 60 | John Eady | 38 | Head | Laborer | South Carolina |
| 61 | Elease Eady | 32 | Wife | — | South Carolina |
| 62 | — | None | — | — | — |
| 63 | — | None | — | — | — |
| 64 | Annie James | 67 | Head | — | South Carolina |
| 65 | Mable James | 15 | Granddaughter | — | South Carolina |
| 66 | Harold James James | 13 | Grandson | — | South Carolina |
| 67 | Robert Walker | 51 | Head | — | South Carolina |
| 68 | Marie Walker | 23 | Daughter | Teacher | South Carolina |
| 69 | Roosevelt Walker | 18 | Grandson | Laborer | South Carolina |
| 70 | Martin Sanders | 44 | Head | Laborer | South Carolina |
| 71 | Rosa Sanders | 56 | Wife | — | South Carolina |
| 72 | Eula Green | 46 | Head | Maid | South Carolina |
| 73 | Willie Green | 20 | Son | Laborer | South Carolina |
| 74 | Mary Florence Green | 18 | Daughter | — | South Carolina |
| 75 | Marjorie Green | 16 | Daughter | — | South Carolina |
| 76 | Sam Jr. Green | 13 | Son | — | South Carolina |
| 77 | Paul Anthony | 39 | Head | Operator | South Carolina |
| 78 | Marie Anthony | 57 | Wife | — | South Carolina |
| 79 | Rosa Lee Anthony | 18 | Daughter | — | South Carolina |
| 80 | John Anthony | 17 | Son | Laborer | South Carolina |
Pedigree Summary
John
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)