MP
Mary Pratt — 1940 US Census Record
Linked across censuses1940 United States Federal Census · York-County, South Carolina
Our Model Tree links this Mary Pratt across the 1930 and 1940 US Censuses in York-County, South Carolina (XGBoost, ~Confirmed) — first a daughter (b.~1924), then head of a 9-person household.
Age 16
b. ~1924
Female
Daughter
Born: South Carolina
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | York-County, South Carolina |
| Surname | Pratt |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 16 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Fort Mill Town |
| 1935 Residence (County) | York |
| Additional Details | |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Township / Ward | Fort Mill Town |
| Est. Birth Year | ~1924 |
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 |
|---|---|---|---|---|
| Eunice Pratt | Daughter | — | 10 | ~1930 |
| Mary Pratt | Daughter | — | 16 | ~1924 |
| John Pratt | Head | — | 56 | ~1884 |
| Row Barker | Other | — | — | |
| John Pratt | Son | — | 19 | ~1921 |
| Alex Pratt | Son | — | 2 | ~1938 |
| Billy Pratt | Son | — | 8 | ~1932 |
| Paul Pratt | Son | — | 5 | ~1935 |
| Mary Pratt | Spouse | — | 50 | ~1890 |
Census Appearances
1930
York, South …
Other, age 6
York, South Carolina · implied b. ~1924 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Pratt |
| Given Name | Mary |
| Relationship to Head | Granddaughter |
| Sex | F |
| Color / Race | Black |
| Age | 6 |
| 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
York-County, South …
Daughter, age 16
York-County, South Carolina · implied b. ~1924 — 9 household members
| Surname | Pratt |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 16 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Fort Mill Town |
| 1935 Residence (County) | York |
| Highest Grade | Hs 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 Pratt across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Pratt
Daughter · 1940 · age 16 · b. ~1924 · South Carolina
★ You are viewing this record
Sibling
Billy Pratt
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eunice Pratt
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Pratt
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alex Pratt
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Pratt
Sibling · 1940 · age 19
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 — York-County, South Carolina
Open full size
1940 US Federal Census — York-County, South Carolina
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03846-00236)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Alvin D. Rogers | 39 | Head | Pharmacist | South Carolina |
| 2 | Elizabeth Rogers | 32 | Wife | — | South Carolina |
| 3 | William B. Mack | 56 | Head | Lawyer | New York |
| 4 | Elizabeth Mack | 35 | Wife | Secretary | South Carolina |
| 5 | Barron Mack | 5 | Son | — | South Carolina |
| 6 | John T. Pratt | 56 | Head | Sweeper | South Carolina |
| 7 | Mary Pratt | 50 | Wife | — | South Carolina |
| 8 | John Jr. Pratt | 19 | Son | Truck Driver | South Carolina |
| 9 | Mary Pratt THIS PERSON | 16 | Daughter | — | South Carolina |
| 10 | Eunice Pratt | 10 | Daughter | — | South Carolina |
| 11 | Billy Pratt | 8 | Son | — | South Carolina |
| 12 | Paul Pratt | 5 | Son | — | South Carolina |
| 13 | Alex Pratt | 2 | Son | — | South Carolina |
| 14 | Row Barker | None | — | — | — |
| 15 | Harriet Seagle | 52 | Head | Laundress | South Carolina |
| 16 | Elizabeth Seagle | 17 | Daughter | New Worker | South Carolina |
| 17 | Sammie Seagle | 13 | Son | — | South Carolina |
| 18 | Eunice Lee | 35 | Head | Laundress | South Carolina |
| 19 | Mozelle Lee | 16 | Daughter | Nurse | South Carolina |
| 20 | Thelma Lee | 13 | Daughter | — | South Carolina |
| 21 | Frances Lee | 9 | Daughter | — | South Carolina |
| 22 | Booker T. Lee | 25 | Brother | Packer Cloth | South Carolina |
| 23 | John White | 8 | Nephew | — | South Carolina |
| 24 | Eunice White | 6 | Niece | — | South Carolina |
| 25 | Amanda Brown | 35 | Head | House Cleaner | South Carolina |
| 26 | Hazel Brown | 14 | Daughter | Zamboni Boy? | South Carolina |
| 27 | Henry Lee Brown | 6 | Nephew | — | South Carolina |
| 28 | Rosa Johnson | 55 | Head | Laundress | South Carolina |
| 29 | Harry Anderson | 25 | Nephew | Laborer | South Carolina |
| 30 | Gertrude Anderson | 21 | Niece | Laundress | South Carolina |
| 31 | Luke Boyd Poole | 32 | Head | Laborer | South Carolina |
| 32 | Ida Poole | 26 | Wife | — | South Carolina |
| 33 | Clark Mcbee | 25 | Boarder | — | South Carolina |
| 34 | Eunice White | 50 | Head | Cook | South Carolina |
| 35 | Devil White | 15 | Son | Delivery Boy | South Carolina |
| 36 | Daisy Laura White | 11 | Daughter | — | South Carolina |
| 37 | Mary Alexander | 19 | Daughter | Cook | South Carolina |
| 38 | John Alexander | 3 | Nephew | — | South Carolina |
| 39 | Jane Mclean | 1 | Granddaughter | — | South Carolina |
| 40 | John Brown | 30 | Boarder | Truck Driver | 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)