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Mary Mccoy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Kershaw-County, South Carolina
Our Model Tree links this Mary Mccoy across the 1930 and 1940 US Censuses in Kershaw-County, South Carolina (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 9-person household.
Age 11
b. ~1929
Female
Daughter
Born: South Carolina
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Kershaw-County, South Carolina |
| Surname | McCoy |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | DeKalb Township |
| 1935 Residence (County) | Kershaw |
| Additional Details | |
| Highest Grade | No 2 |
| 1935 Residence | Same Place |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Township / Ward | Dekalb Township |
| Est. Birth Year | ~1929 |
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 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Mccoy | Daughter | — | 11 | ~1929 |
| Margaret Mccoy | Daughter | — | 5 | ~1935 |
| Hattie Mccoy | Daughter | — | 13 | ~1927 |
| Sauna Mccoy | Daughter | — | 7 | ~1933 |
| David Mccoy | Head | — | 47 | ~1893 |
| Willie Mccoy | Son | — | 9 | ~1931 |
| David Mccoy | Son | — | 3 | ~1937 |
| Areline Mccoy | Son | — | 2 | ~1938 |
| Carrie Mccoy | Spouse | — | 35 | ~1905 |
Census Appearances
1930
Kershaw, South …
Other, age 1
Kershaw, South Carolina · implied b. ~1929 — 13 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McKay |
| Given Name | Mary |
| Relationship to Head | granddaughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Occupation | none |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1940
Kershaw-County, South …
Daughter, age 11
Kershaw-County, South Carolina · implied b. ~1929 — 9 household members
| Surname | McCoy |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | DeKalb Township |
| 1935 Residence (County) | Kershaw |
| Highest Grade | No 2 |
| 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 Mccoy across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mccoy
Daughter · 1940 · age 11 · b. ~1929 · South Carolina
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Sibling
Willie Mccoy
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Areline Mccoy
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hattie Mccoy
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David Mccoy
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sauna Mccoy
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Mccoy
Sibling · 1940 · age 5
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 — Kershaw-County, South Carolina
Open full size
1940 US Federal Census — Kershaw-County, South Carolina
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03819-00484)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Bessie Clarke | 22 | Daughter | Helper | South Carolina |
| 2 | Louena Clarke | 20 | Daughter | Helper | South Carolina |
| 3 | Ada Bell Pea | 8 | Granddaughter | — | New Jersey |
| 4 | Mary Pea | 4 | Granddaughter | — | New Jersey |
| 5 | Ellen Pea | 2 | Granddaughter | — | New Jersey |
| 6 | Scott Mccarnie | 47 | Head | Farmer | South Carolina |
| 7 | Mary Mccarnie | 47 | Wife | Help | South Carolina |
| 8 | Janifa Mccarnie | 24 | Son | Farmer | South Carolina |
| 9 | Susie Mccarnie | 23 | Wife | — | South Carolina |
| 10 | Scott Mccarnie | 4 | Son | — | South Carolina |
| 11 | Rosetta Mccarnie | 2 | Daughter | — | South Carolina |
| 12 | David Mccoy | 47 | Head | Farmer | South Carolina |
| 13 | Carrie Bell Mccoy | 35 | Wife | — | South Carolina |
| 14 | Hattie Mccoy | 13 | Daughter | — | South Carolina |
| 15 | Mary Mccoy THIS PERSON | 11 | Daughter | — | South Carolina |
| 16 | Willie Mccoy | 9 | Son | — | South Carolina |
| 17 | Sauna Mccoy | 7 | Daughter | — | South Carolina |
| 18 | Margaret Mccoy | 5 | Daughter | — | South Carolina |
| 19 | David Jr Mccoy | 3 | Son | — | South Carolina |
| 20 | Areline Mccoy | 2 | Son | — | South Carolina |
| 21 | Fred Mccoy | 45 | Head | Farmer | South Carolina |
| 22 | Charlie Mccoy | 18 | Son | — | South Carolina |
| 23 | Alltee Mccoy | 16 | Daughter | — | South Carolina |
| 24 | Fred Jr. Mccoy | 14 | Son | — | South Carolina |
| 25 | Charlie Pea | 23 | Head | Laborer | South Carolina |
| 26 | Grover Owens | 47 | Head | Farmer | South Carolina |
| 27 | Susie Owens | 40 | Wife | — | South Carolina |
| 28 | Grover Owens | 22 | Son | Saw Mill | South Carolina |
| 29 | Harold Owens | 20 | Son | Farmer | South Carolina |
| 30 | Thelma Owens | 19 | Daughter | Servant | South Carolina |
| 31 | Slovey Owens | 15 | Son | — | South Carolina |
| 32 | Burnette Owens | 12 | Son | — | South Carolina |
| 33 | Blanche Owens | 9 | Daughter | — | South Carolina |
| 34 | William Owens | 4 | Son | — | South Carolina |
| 35 | Charles Pea | 40 | Head | Farmer | South Carolina |
| 36 | Viola Pea | 35 | Wife | — | South Carolina |
| 37 | Bell Pea | 8 | Daughter | — | South Carolina |
| 38 | Lydia Pea | 2 | Daughter | — | South Carolina |
| 39 | Marshall James Pea | 11 | Nephew | — | South Carolina |
| 40 | Sarah Pea | 9 | Niece | — | 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)