MD
Mary Duke — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Sumter-County, South Carolina
Our Model Tree links this Mary Duke across the 1930 and 1940 US Censuses in Sumter-County, South Carolina (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 5-person household.
Age 13
b. ~1927
Female
Daughter
Born: South Carolina
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Sumter-County, South Carolina |
| Surname | Duke |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 13 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Sumter |
| 1935 Residence (County) | Sumter |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Township / Ward | Sumter |
| Est. Birth Year | ~1927 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Alice Duke | Daughter | — | 12 | ~1928 |
| Mary Duke | Daughter | — | 13 | ~1927 |
| June Duke | Son | — | 10 | ~1930 |
| Solmon Duke | Head | — | 34 | ~1906 |
| Jonathan Duke | Son | — | 15 | ~1925 |
Census Appearances
1930
Sumter, South …
Daughter, age 2
Sumter, South Carolina · implied b. ~1928 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dukes |
| Given Name | Mamie J |
| 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 |
| Can Read/Write | No |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1940
Sumter-County, South …
Daughter, age 13
Sumter-County, South Carolina · implied b. ~1927 — 5 household members
| Surname | Duke |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 13 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Sumter |
| 1935 Residence (County) | Sumter |
| Highest Grade | No 6 |
| 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 Duke across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Duke
Daughter · 1940 · age 13 · b. ~1927 · South Carolina
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Sibling
June Duke
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jonathan Duke
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Duke
Sibling · 1940 · age 12
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 — 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-t0627-03842-00482)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Louise Scarborough | 41 | Head | — | South Carolina |
| 2 | Mae Scarborough | 18 | Daughter | — | South Carolina |
| 3 | Robert Scarborough | 17 | Son | — | South Carolina |
| 4 | Eudine Scarborough | 12 | Daughter | — | South Carolina |
| 5 | James Pickburgh | 30 | Head | Truck Driver | South Carolina |
| 6 | Cassie Pickburgh | 27 | Wife | — | South Carolina |
| 7 | John Pickburgh | 7 | Son | — | South Carolina |
| 8 | James Jr. Pickburgh | 5 | Son | — | South Carolina |
| 9 | Hudson Pickburgh | 3 | Son | — | South Carolina |
| 10 | Annie Pickburgh | 1 | Daughter | — | South Carolina |
| 11 | Eva Stokes | 40 | Head | Servant | South Carolina |
| 12 | Mitchel Stokes | 21 | Son | Sewing | South Carolina |
| 13 | Alvin Stokes | 19 | Son | Lumber Grader | South Carolina |
| 14 | David Stokes | 17 | Son | Boot Black | South Carolina |
| 15 | Samuel Stokes | 15 | Son | — | South Carolina |
| 16 | Martha Stokes | 13 | Daughter | — | South Carolina |
| 17 | Ruth Stokes | 11 | Daughter | — | South Carolina |
| 18 | Willie Stokes | 9 | Son | — | South Carolina |
| 19 | James Stokes | 8 | Son | — | South Carolina |
| 20 | Solmon Duke | 34 | Head | Truck Driver | South Carolina |
| 21 | Alice Duke | 12 | Daughter | — | South Carolina |
| 22 | Jonathan Duke | 15 | Son | — | South Carolina |
| 23 | Mary Duke THIS PERSON | 13 | Daughter | — | South Carolina |
| 24 | June Duke | 10 | Son | — | South Carolina |
| 25 | Yancey Mccall | 36 | Head | Lumber Stacker | South Carolina |
| 26 | Rebecca Mccall | 32 | Wife | — | South Carolina |
| 27 | James Mccall | 15 | Daughter | — | South Carolina |
| 28 | Bessie Mae Mccall | 14 | Daughter | — | South Carolina |
| 29 | Velie Mccall | 12 | Daughter | — | South Carolina |
| 30 | Maurice Mccall | 11 | Son | — | South Carolina |
| 31 | Mackey Tingle | 29 | Head | Laborer | South Carolina |
| 32 | Millie Tingle | 25 | Wife | — | South Carolina |
| 33 | Lucile Tingle | 5 | Daughter | — | South Carolina |
| 34 | Isham Tumblin | 4 | Grandchild | — | South Carolina |
| 35 | Pete Tumblin | 4 | Grandchild | — | South Carolina |
| 36 | Blaney Johnston | 29 | Head | Laborer | South Carolina |
| 37 | Mamie Johnston | 28 | Wife | — | South Carolina |
| 38 | Ivena Johnston | 4 | Daughter | — | South Carolina |
| 39 | Ida Johnston | 1 | Daughter | — | South Carolina |
| 40 | Julia Graham | 60 | Aunt | — | South Carolina |
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)