MT
Mary Thomas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Chester-County, South Carolina
Our Model Tree links this Mary Thomas across the 1920, 1930 and 1940 US Censuses in Chester-County, South Carolina (XGBoost, ~Confirmed), with identified parents Land — first a daughter (b.~1911), then head of a 4-person household.
Age 29
b. ~1911
Female
Daughter
Born: South Carolina
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Chester-County, South Carolina |
| Surname | Thomas |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 29 |
| Marital Status | Married |
| Birthplace | South Carolina |
| 1935 Residence (City) | Rossville Township |
| 1935 Residence (County) | Chester |
| Additional Details | |
| Occupation | Cook |
| Industry | Private family |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 156 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Occupation | Cook |
| Township / Ward | Rossville Township |
| Est. Birth Year | ~1911 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Thomas | Daughter | — | 29 | ~1911 |
| Land Thomas | Head | — | 28 | ~1912 |
| Maggie Brown | Other | — | 50 | ~1890 |
| Viola Thomas | Other | — | 12 | ~1928 |
Census Appearances
1920
Chester, South …
Other, age 9
Chester, South Carolina · implied b. ~1911 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Mary |
| Relationship to Head | Grand daughter |
| Sex | F |
| Color / Race | Black |
| Age | 9 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Occupation | none |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1930
Chester, South …
Daughter, age 18
Chester, South Carolina · implied b. ~1912 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 18 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Occupation | Laborer |
| Industry | Gen. Farm |
| Class of Worker | W |
| Can Read/Write | No |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1940
Chester-County, South …
Daughter, age 29
Chester-County, South Carolina · implied b. ~1911 — 4 household members
| Surname | Thomas |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 29 |
| Marital Status | Married |
| Birthplace | South Carolina |
| 1935 Residence (City) | Rossville Township |
| 1935 Residence (County) | Chester |
| Occupation | Cook |
| Industry | Private family |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 156 |
| Highest Grade | No 7 |
| 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 Mary Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Land Thomas (~0.50 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.5
Father
Land Thomas
b. ~1912
Source father
● Household
· direct · ~0.5
This person
Anchor record
Mary Thomas
Daughter · 1940 · age 29 · b. ~1911 · 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 — Chester-County, South Carolina
Open full size
1940 US Federal Census — Chester-County, South Carolina
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03798-00784)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Charlie Jr Douglas | 15 | Son | Helper | South Carolina |
| 42 | Bernice Douglas | 15 | Daughter | — | South Carolina |
| 43 | Bobbie J Douglas | 1 | Son | — | South Carolina |
| 44 | Land Thomas | 28 | Head | — | South Carolina |
| 45 | Mary Thomas THIS PERSON | 29 | Daughter | Cook | South Carolina |
| 46 | Viola Thomas | 12 | Granddaughter | — | South Carolina |
| 47 | Maggie Brown | 50 | Lodger | Maid | South Carolina |
| 48 | Edgar Douglas | 30 | Head | Farmer | South Carolina |
| 49 | Bessie Douglas | 24 | Wife | — | South Carolina |
| 50 | Sarah Douglas | 7 | Daughter | — | South Carolina |
| 51 | Edgar Jr Douglas | 6 | Son | — | South Carolina |
| 52 | Virginia Douglas | 5 | Daughter | — | South Carolina |
| 53 | Louise Douglas | 3 | Daughter | — | South Carolina |
| 54 | J C Douglas | 2 | Son | — | South Carolina |
| 55 | Isaac Douglas | 2 | Son | — | South Carolina |
| 56 | Robert Douglas | 25 | Brother | Laborer | South Carolina |
| 57 | Thomas Douglas | 20 | Brother | Laborer | South Carolina |
| 58 | Ulysses Douglas | 18 | Brother | Laborer | South Carolina |
| 59 | Maggie B Douglas | 13 | Sister | — | South Carolina |
| 60 | Lucuim Jordan | 55 | Head | Farmer | South Carolina |
| 61 | Nancy E Jordan | 55 | Wife | — | South Carolina |
| 62 | Margurita Jordan | 26 | Daughter | — | South Carolina |
| 63 | Red Blackmon | 35 | Head | Farmer | South Carolina |
| 64 | Bessie Blackmon | 34 | Wife | — | South Carolina |
| 65 | Beatrice Blackmon | 15 | Daughter | — | South Carolina |
| 66 | Nannie Blackmon | 12 | Daughter | — | South Carolina |
| 67 | Marion Blackmon | 9 | Daughter | — | South Carolina |
| 68 | Robert Hall | 30 | Head | Farmer | South Carolina |
| 69 | Maurice Hall | 25 | Wife | — | South Carolina |
| 70 | Maurice Hall | 1 | Daughter | — | South Carolina |
| 71 | Willie Douglas | 35 | Head | Farmer | South Carolina |
| 72 | Mozelle Douglas | 30 | Wife | — | South Carolina |
| 73 | Willie Jr Douglas | 5 | Son | — | South Carolina |
| 74 | Charlie Douglas | 4 | Son | — | South Carolina |
| 75 | Bunny Douglas | 2 | Daughter | — | South Carolina |
| 76 | Mozell Douglas | 1 | Daughter | — | South Carolina |
| 77 | Alice Lee Douglas | 16 | Sister | — | South Carolina |
| 78 | Elija Blackmon | 60 | Head | — | South Carolina |
| 79 | Loraine Boular | 9 | Granddaughter | — | South Carolina |
| 80 | Walker Talford | 60 | Head | Farmer | South Carolina |
Pedigree Summary
Mary
Gen 1 · 1 parents
~0.5
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)