MT
Mary Thomas — 1930 US Census Record
Model Tree available1930 United States Federal Census · Lee, South Carolina
Our Model Tree links this Mary Thomas across the 1910, 1920 and 1930 US Censuses in Lee, South Carolina (XGBoost, ~Confirmed), with identified parents Fred & William — first a daughter (b.~1909), then head of a 9-person household.
Age 21
b. ~1909
Female
Daughter
Born: South Carolina
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Lee, South Carolina |
| Surname | Thomas |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 21 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Additional Details | |
| Occupation | Laborer |
| Industry | Gen Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Occupation | Laborer |
| Township / Ward | Bishopville Township |
| Est. Birth Year | ~1909 |
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.
9 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Lillie Thomas | Daughter | — | 24 | ~1906 |
| Lillie Thomas | Daughter | — | 12 | ~1918 |
| Mary Thomas | Daughter | — | 21 | ~1909 |
| Annie Thomas | Daughter | — | 14 | ~1916 |
| Fred Thomas | Head | — | 52 | ~1878 |
| Lizzie Thomas | Other | — | 49 | ~1881 |
| Henry Thomas | Son | — | 8 | ~1922 |
| Fred Thomas | Son | — | 17 | ~1913 |
| Ernest Thomas | Son | — | 10 | ~1920 |
Census Appearances
1910
Lee, South …
Daughter, age 2
Lee, South Carolina · implied b. ~1908 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Marie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 2 |
| 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 |
Daughter, age 12
Lee, South Carolina · implied b. ~1908 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Marie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 12 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Occupation | none |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1930
Lee, South …
Daughter, age 21
Lee, South Carolina · implied b. ~1909 — 9 household members
| Surname | Thomas |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 21 |
| 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 | Yes |
| 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 (1910, 1920 and 1930) in Lee, South Carolina, using XGBoost record linkage. Identified parents: father Fred Thomas (~0.92 confidence) and father William Thomas (~0.92 confidence) and mother Lillie Thomas (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Fred Thomas
b. ~1878
Source father
● Household
· direct · ~0.92
Father
William Thomas
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Lillie Thomas
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Thomas
Daughter · 1930 · age 21 · b. ~1909 · South Carolina
★ You are viewing this record
Sibling
Annie Thomas
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lillie Thomas
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Henry Thomas
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Fred Thomas
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lillie Thomas
Sibling · 1930 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ernest Thomas
Sibling · 1930 · age 10
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
1930 US Federal Census — Lee, South Carolina
Open full size
1930 US Federal Census — Lee, South Carolina
Page Contents
50 people indexed on this census page (ia:1930:15thcensus2205unit:0491)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Richard White | 55 | Head | Gen Farm | South Carolina |
| 52 | Liza White | 42 | Wife-H | — | North Carolina |
| 53 | James White | 21 | Son | Laborer | South Carolina |
| 54 | Lizzie White | 16 | Daughter | Laborer | South Carolina |
| 55 | Richard White | 14 | Son | — | South Carolina |
| 56 | Mary White | 11 | Daughter | — | South Carolina |
| 57 | Isaac Williams | 37 | Head | Laborer | South Carolina |
| 58 | Lizzie Williams | 33 | Wife-H | Laborer | South Carolina |
| 59 | Lizzie Williams | 13 | Daughter | — | South Carolina |
| 60 | Thelma Williams | 11 | Daughter | — | South Carolina |
| 61 | Isaac Williams | 66 | Head | Laborer | South Carolina |
| 62 | Lizzie Williams | 54 | Wife-H | — | South Carolina |
| 63 | Isaac Williams | 22 | Son | — | South Carolina |
| 64 | David Williams | 18 | Son | — | South Carolina |
| 65 | Lizzie Williams | 15 | Daughter | — | South Carolina |
| 66 | Fred Thomas | 52 | Head | Laborer | South Carolina |
| 67 | Lizzie Thomas | 49 | Wife-H | — | South Carolina |
| 68 | Lillie Thomas | 24 | Daughter | Laborer | South Carolina |
| 69 | Mary Thomas THIS PERSON | 21 | Daughter | Laborer | South Carolina |
| 70 | Fred Thomas | 17 | Son | — | South Carolina |
| 71 | Annie Thomas | 14 | Daughter | — | South Carolina |
| 72 | Lillie Thomas | 12 | Daughter | — | South Carolina |
| 73 | Ernest Thomas | 10 | Son | — | South Carolina |
| 74 | Henry Thomas | 8 | Son | — | South Carolina |
| 75 | Will James | 49 | Head | Laborer | South Carolina |
| 76 | Lizzie James | 50 | Wife-H | — | South Carolina |
| 77 | Will James | 20 | Son | Laborer | South Carolina |
| 78 | Milton James | 17 | Son | — | South Carolina |
| 79 | Lula James | 14 | Daughter | — | South Carolina |
| 80 | Lizzie James | 12 | Daughter | — | South Carolina |
| 81 | Mary James | 10 | Daughter | — | South Carolina |
| 82 | Richard Chestnut | 50 | Head | Laborer | South Carolina |
| 83 | Liza Chestnut | 44 | Wife-H | — | South Carolina |
| 84 | Richard Chestnut | 21 | Son | Laborer | South Carolina |
| 85 | Mabel Chestnut | 15 | Daughter | — | South Carolina |
| 86 | Moses Harrison | 58 | Head | Laborer | South Carolina |
| 87 | Liza Harrison | 52 | Wife-H | — | South Carolina |
| 88 | Liza Harrison | 14 | Daughter | — | South Carolina |
| 89 | Lillie Harrison | 11 | Daughter | — | South Carolina |
| 90 | Joe Harrison | 6 | Son | — | South Carolina |
| 91 | Liza Harrison | 4 | Daughter | — | South Carolina |
| 92 | Moses Harrison | 1 | Son | — | South Carolina |
| 93 | Willie Harrison | 29 | Head | Laborer | South Carolina |
| 94 | Liza Harrison | 25 | Wife-H | — | South Carolina |
| 95 | Willie Harrison | 4 | Son | — | South Carolina |
| 96 | Liza Harrison | 1 | Daughter | — | South Carolina |
| 97 | Arthur Gause | 40 | Head | Laborer | South Carolina |
| 98 | Mary Gause | 20 | Daughter | Laborer | South Carolina |
| 99 | James Gause | 16 | Son | Laborer | South Carolina |
| 100 | Liza Gause | 14 | Daughter | Laborer | South Carolina |
Related Census Records
Pedigree Summary
Mary + 6 siblings
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 1930 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)