MC
Mary Caldwell — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Chester-County, South Carolina
Our Model Tree links this Mary Caldwell across the 1930 and 1940 US Censuses in Chester-County, South Carolina (XGBoost, ~Confirmed) — first a daughter (b.~1921), then head of a 10-person household.
Age 19
b. ~1921
Female
Daughter
Born: South Carolina
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Chester-County, South Carolina |
| Surname | Caldwell |
| Given Name | Mary Lee |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 19 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Chester City |
| 1935 Residence (County) | Chester |
| Additional Details | |
| Occupation | Maid |
| Industry | Private home |
| Class of Worker | PW |
| Hours Worked | 14 |
| Income (1939) | 86 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Occupation | Maid |
| Township / Ward | Chester City |
| Est. Birth Year | ~1921 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Nancy Caldwell | Daughter | — | 23 | ~1917 |
| Sarah Caldwell | Daughter | — | 13 | ~1927 |
| Mary Caldwell | Daughter | — | 19 | ~1921 |
| Hannah Caldwell | Daughter | — | 6 | ~1934 |
| Robert Caldwell | Head | — | 68 | ~1872 |
| Frazier Caldwell | Son | — | 11 | ~1929 |
| Major Caldwell | Son | — | 17 | ~1923 |
| James Caldwell | Son | — | 15 | ~1925 |
| Richard Caldwell | Son | — | 9 | ~1931 |
| Mary Caldwell | Spouse | — | 46 | ~1894 |
Census Appearances
1930
Chester, South …
Daughter, age 9
Chester, South Carolina · implied b. ~1921 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Coldwell |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 9 |
| 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 |
1940
Chester-County, South …
Daughter, age 19
Chester-County, South Carolina · implied b. ~1921 — 10 household members
| Surname | Caldwell |
| Given Name | Mary Lee |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 19 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Chester City |
| 1935 Residence (County) | Chester |
| Occupation | Maid |
| Industry | Private home |
| Class of Worker | PW |
| Hours Worked | 14 |
| Income (1939) | 86 |
| Highest Grade | No 4 |
| 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 Caldwell across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Caldwell
Daughter · 1940 · age 19 · b. ~1921 · South Carolina
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Sibling
Major Caldwell
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nancy Caldwell
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Caldwell
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hannah Caldwell
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Caldwell
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sarah Caldwell
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frazier Caldwell
Sibling · 1940 · age 11
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 — 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-t0627-03798-00189)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | White | None | — | — | — |
| 2 | Gell Wylie | 48 | Head | Laborer | South Carolina |
| 3 | Cora Wylie | 39 | Wife | — | South Carolina |
| 4 | James Lockheart | 20 | Nephew | Laborer | South Carolina |
| 5 | Mary Lockheart | 18 | Niece | Maid | South Carolina |
| 6 | Will Clark | 38 | Head | — | South Carolina |
| 7 | Mamie Clark | 23 | Wife | Cook | South Carolina |
| 8 | Lula Gladden | 20 | Lodger | Cook | South Carolina |
| 9 | Sarah Dickson | 25 | Lodger | Cook | South Carolina |
| 10 | Monty Walker | 30 | Lodger | Tailor | South Carolina |
| 11 | Kathie Ison | 45 | Head | Washerwoman | South Carolina |
| 12 | Ruby Haley | 50 | Sister | Secretary | South Carolina |
| 13 | Cicely Clark | 53 | Head | — | South Carolina |
| 14 | P. L. Coleman | 16 | Lodger | — | South Carolina |
| 15 | James Simpson | 28 | Head | Laundress | South Carolina |
| 16 | Maude Simpson | 26 | Daughter | Cook | South Carolina |
| 17 | James May Blake | 13 | Granddaughter | — | South Carolina |
| 18 | Bernice Blake | 11 | Granddaughter | — | South Carolina |
| 19 | Genevia Blake | 8 | Granddaughter | — | South Carolina |
| 20 | Freddie Blake | 7 | Grandson | — | South Carolina |
| 21 | Annie May Foster | 44 | Lodger | — | South Carolina |
| 22 | Ted Butler | 32 | Head | Painter | South Carolina |
| 23 | Fannie Butler | 31 | Wife | Laundress | South Carolina |
| 24 | Annie Telford | 49 | Head | Maid | South Carolina |
| 25 | Robert Telford | 44 | Husband | Laborer | South Carolina |
| 26 | D. T. Telford | 20 | Son | Laborer | South Carolina |
| 27 | Willie Lee Telford | 19 | Daughter | — | North Carolina |
| 28 | Robert Caldwell | 68 | Head | W. P. A. | South Carolina |
| 29 | Mary Caldwell | 46 | Wife | Laundress | South Carolina |
| 30 | Nancy Caldwell | 23 | Daughter | Nurse Maid | South Carolina |
| 31 | Mary Lee Caldwell THIS PERSON | 19 | Daughter | Maid | South Carolina |
| 32 | Major Caldwell | 17 | Son | — | South Carolina |
| 33 | James Caldwell | 15 | Son | — | South Carolina |
| 34 | Sarah Caldwell | 13 | Daughter | — | South Carolina |
| 35 | Frazier Caldwell | 11 | Son | — | South Carolina |
| 36 | Richard Caldwell | 9 | Son | — | South Carolina |
| 37 | Hannah Caldwell | 6 | Daughter | — | South Carolina |
| 38 | James Feaster | 42 | Head | Laborer | South Carolina |
| 39 | Lilly May Feaster | 35 | Wife | — | South Carolina |
| 40 | Betty Joe Feaster | 1 | Daughter | — | South Carolina |
Related Census Records
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)