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Mary Thornton — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Bolivar-County, Mississippi
Our Model Tree links this Mary Thornton across the 1930 and 1940 US Censuses in Bolivar-County, Mississippi (XGBoost, ~Confirmed) — first a daughter (b.~1923), then head of a 13-person household.
Age 17
b. ~1923
Female
Daughter
Born: Mississippi
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Bolivar-County, Mississippi |
| Surname | Thornton |
| Given Name | Mary Lee |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Mississippi |
| 1935 Residence (City) | Beat 2 |
| 1935 Residence (County) | Bolivar |
| Additional Details | |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
| Township / Ward | Beat 2 |
| 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.
13 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Thornton | Daughter | — | 17 | ~1923 |
| V Thornton | Daughter | — | 15 | ~1925 |
| Elizabeth Thornton | Daughter | — | 4 | ~1936 |
| Rosa Thornton | Daughter | — | 10 | ~1930 |
| Harvey Thornton | Head | — | 41 | ~1899 |
| Roy Thornton | Son | — | 6 | ~1934 |
| Eugene Thornton | Son | — | 12 | ~1928 |
| Harvey Thornton | Son | — | 14 | ~1926 |
| Ray Thornton | Son | — | 6 | ~1934 |
| Louis Thornton | Son | — | 2 | ~1938 |
| Allen Thornton | Son | — | 8 | ~1932 |
| Francis Thornton | Son | — | ~1940 | |
| Mollie Thornton | Spouse | — | 32 | ~1908 |
Census Appearances
1930
Bolivar, Mississippi
Daughter, age 7
Bolivar, Mississippi · implied b. ~1923 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thornton |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Mississippi |
| Father's Birthplace | Mississippi |
| Mother's Birthplace | Mississippi |
| Can Read/Write | Yes |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
1940
Bolivar-County, Mississippi
Daughter, age 17
Bolivar-County, Mississippi · implied b. ~1923 — 13 household members
| Surname | Thornton |
| Given Name | Mary Lee |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Mississippi |
| 1935 Residence (City) | Beat 2 |
| 1935 Residence (County) | Bolivar |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
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 Thornton across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Thornton
Daughter · 1940 · age 17 · b. ~1923 · Mississippi
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Sibling
V Thornton
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Thornton
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Roy Thornton
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Thornton
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Louis Thornton
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Allen Thornton
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harvey Thornton
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eugene Thornton
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rosa Thornton
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ray Thornton
Sibling · 1940 · age 6
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 — Bolivar-County, Mississippi
Open full size
1940 US Federal Census — Bolivar-County, Mississippi
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02009-00446)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Jimmie Clark | 32 | Head | Farmer | Mississippi |
| 2 | Aline Clark | 30 | Wife | Farm Laborer | Mississippi |
| 3 | Luebirter Clark | 13 | Daughter | — | Mississippi |
| 4 | Lillie Bell Clark | 12 | Daughter | — | Mississippi |
| 5 | C. J. Clark | 10 | Son | — | Mississippi |
| 6 | Kathrine Clark | 7 | Daughter | — | Mississippi |
| 7 | Harvey D. O. Thornton | 41 | Head | Farmer | Mississippi |
| 8 | Mollie M. Thornton | 32 | Wife | — | Mississippi |
| 9 | Mary Lee Thornton THIS PERSON | 17 | Daughter | — | Mississippi |
| 10 | V. Dell Thornton | 15 | Daughter | — | Mississippi |
| 11 | Harvey E. Thornton | 14 | Son | Farm Laborer | Mississippi |
| 12 | Eugene T. Thornton | 12 | Son | — | Mississippi |
| 13 | Rosa C. Thornton | 10 | Daughter | — | Mississippi |
| 14 | Allen D. Thornton | 8 | Son | — | Mississippi |
| 15 | Ray W. Thornton | 6 | Son | — | Mississippi |
| 16 | Roy M. Thornton | 6 | Son | — | Mississippi |
| 17 | Elizabeth A. Thornton | 4 | Daughter | — | Mississippi |
| 18 | Louis M. Thornton | 2 | Son | — | Mississippi |
| 19 | Francis J. Thornton | 0 | Son | — | Mississippi |
| 20 | Vasser Caldwell | 43 | Head | Farmer | Mississippi |
| 21 | Lula Caldwell | 42 | Wife | Farm Laborer | Mississippi |
| 22 | Henry Caldwell | 15 | Son | Farm Laborer | Mississippi |
| 23 | Dilbert Caldwell | 13 | Son | — | Illinois |
| 24 | Vasser Jr. Caldwell | 10 | Son | — | Mississippi |
| 25 | Lawrence Caldwell | 8 | Son | — | Mississippi |
| 26 | James Caldwell | 5 | Son | — | Mississippi |
| 27 | Edna Lee Caldwell | 1 | Daughter | — | Mississippi |
| 28 | Simon Devine | 22 | Head | Farmer | Mississippi |
| 29 | Virginia C. Devine | 22 | Wife | Farm Laborer | Mississippi |
| 30 | Beatris Devine | 4 | Daughter | — | Mississippi |
| 31 | Simon Jr. Devine | 3 | Son | — | Mississippi |
| 32 | Leroy Devine | 1 | Son | — | Mississippi |
| 33 | Clara Devine | 12 | Sister | — | Mississippi |
| 34 | Comey Devine | 22 | Brother | Farmer | Mississippi |
| 35 | James Devine | 19 | Brother | Farm Laborer | Mississippi |
| 36 | Willie G. Rose | 44 | Head | Farmer | Mississippi |
| 37 | Betty Rose | 38 | Wife | Farm Laborer | Mississippi |
| 38 | Marie Rose | 19 | Daughter | Farm Laborer | Mississippi |
| 39 | Mollie Rose | 17 | Daughter | Farm Laborer | Mississippi |
| 40 | Henry Rose | 13 | Son | — | Mississippi |
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)