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Mary Duke — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Williamsburg-County, South Carolina
Our Model Tree links this Mary Duke across the 1930 and 1940 US Censuses in Williamsburg-County, South Carolina (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 7-person household.
Age 12
b. ~1928
Female
Daughter
Born: South Carolina
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Williamsburg-County, South Carolina |
| Surname | Duke |
| Given Name | Mary Nell |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Mingo |
| 1935 Residence (County) | Williamsburg |
| Additional Details | |
| Highest Grade | 6 |
| 1935 Residence | Same House |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Township / Ward | Mingo |
| Est. Birth Year | ~1928 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Daniel Duke | Son | — | 1 | ~1939 |
| William Duke | Son | — | 2 | ~1938 |
| William Duke | Head | — | 37 | ~1903 |
| Betty Duke | Daughter | — | 10 | ~1930 |
| Clarice Duke | Daughter | — | 13 | ~1927 |
| Clarice Duke | Spouse | — | 33 | ~1907 |
| Mary Duke | Daughter | — | 12 | ~1928 |
Census Appearances
1930
Williamsburg, South …
Daughter, age 2
Williamsburg, South Carolina · implied b. ~1928 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duke |
| Given Name | Mary Nell |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| 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 |
1940
Williamsburg-County, South …
Daughter, age 12
Williamsburg-County, South Carolina · implied b. ~1928 — 7 household members
| Surname | Duke |
| Given Name | Mary Nell |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Mingo |
| 1935 Residence (County) | Williamsburg |
| Highest Grade | 6 |
| 1935 Residence | Same House |
| 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 12 · b. ~1928 · South Carolina
★ You are viewing this record
Sibling
Betty Duke
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Duke
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clarice Duke
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Duke
Sibling · 1940 · age 2
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 — Williamsburg-County, South Carolina
Open full size
1940 US Federal Census — Williamsburg-County, South Carolina
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03844-00420)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Cecil M. Cook | 21 | Head | Wood Worker | South Carolina |
| 2 | Ruth Cook | 19 | Wife | Home Work | South Carolina |
| 3 | Gerald A. Cook | 1 | Son | — | South Carolina |
| 4 | Bryant T. Duke | 48 | Head | Bus Driver | South Carolina |
| 5 | Hattie C. Duke | 44 | Wife | Home Work | South Carolina |
| 6 | Robt E. Duke | 21 | Son | Clerkman | South Carolina |
| 7 | John L. Duke | 17 | Son | — | South Carolina |
| 8 | Jack M. Duke | 13 | Son | — | South Carolina |
| 9 | William F. Duke | 37 | Head | Laborer | South Carolina |
| 10 | Clarice B. Duke | 33 | Wife | Home Work | South Carolina |
| 11 | Clarice J. Duke | 13 | Daughter | — | South Carolina |
| 12 | Mary Nell Duke THIS PERSON | 12 | Daughter | — | South Carolina |
| 13 | Betty Lou Duke | 10 | Daughter | — | South Carolina |
| 14 | William D. Duke | 2 | Son | — | South Carolina |
| 15 | Daniel L. Duke | 1 | Son | — | South Carolina |
| 16 | John D. Mccullough | 31 | Head | Laborer | South Carolina |
| 17 | Maggie Mccullough | 22 | Wife | Home Work | South Carolina |
| 18 | Pauline Mccullough | 11 | Daughter | — | South Carolina |
| 19 | Bernice Mccullough | 6 | Daughter | — | South Carolina |
| 20 | Willie Mccullough | 17 | Son | Laborer | South Carolina |
| 21 | Oval Nesmith | 48 | Head | Farmer | South Carolina |
| 22 | Ella Nesmith | 45 | Wife | Home Work | South Carolina |
| 23 | Elton Nesmith | 11 | Son | — | South Carolina |
| 24 | Mack Nesmith | 6 | Son | — | South Carolina |
| 25 | John Scott | 21 | Head | Laborer | South Carolina |
| 26 | Diane Scott | 21 | Wife | Home Work | South Carolina |
| 27 | Essie Scott | 17 | Sister | Laborer | South Carolina |
| 28 | Joe Burgess | 44 | Head | Farmer | South Carolina |
| 29 | Thelma L. Burgess | 37 | Wife | Home Work | South Carolina |
| 30 | Patti Jean Burgess | 4 | Daughter | — | South Carolina |
| 31 | James D. Burgess | 1 | Son | — | South Carolina |
| 32 | Maggie Marilyn | Martin | 56 | Head | Home Work | South Carolina |
| 33 | Fulton Sam Marilyn | Martin | 52 | Brother | Laborer | South Carolina |
| 34 | Millie Marilyn | Martin | 50 | Sister | Laborer | South Carolina |
| 35 | Morgan James Marilyn | Martin | 15 | Step Grand Son | — | South Carolina |
| 36 | Lucy Emma Marilyn | Martin | 13 | Step Grand Daughter | — | South Carolina |
| 37 | Joseph Fuller | 65 | Head | Farmer | South Carolina |
| 38 | Clara Fuller | 13 | Daughter | — | South Carolina |
| 39 | Ella Fuller | 13 | Daughter | — | South Carolina |
| 40 | Motley Fuller | 10 | Son | — | 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)