MB
Mary Barr — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Williamsburg, South Carolina
Our Model Tree links this Mary Barr across the 1920 and 1930 US Censuses in Williamsburg, South Carolina (XGBoost, ~Confirmed) — first a daughter (b.~1910), then head of a 9-person household.
Age 10
b. ~1910
Female
Daughter
Born: South Carolina
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Williamsburg, South Carolina |
| Surname | Barr |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 10 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Township / Ward | Johnson Township |
| Est. Birth Year | ~1910 |
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 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mike Barr | Son | — | 4 | ~1916 |
| Mike Barr | Head | — | 34 | ~1886 |
| Carrie Barr | Daughter | — | 8 | ~1912 |
| Alfair Barr | Daughter | — | 6 | ~1914 |
| Ethel Barr | Daughter | — | 2 | ~1918 |
| Mary Barr | Daughter | — | 10 | ~1910 |
| George Barr | Son | — | 12 | ~1908 |
| Gordon Barr | Son | — | 11 | ~1909 |
| Justine Barr | Spouse | — | 34 | ~1886 |
Census Appearances
1920
Williamsburg, South …
Daughter, age 10
Williamsburg, South Carolina · implied b. ~1910 — 9 household members
| Surname | Barr |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 10 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1930
Williamsburg, South …
Daughter, age 19
Williamsburg, South Carolina · implied b. ~1911 — 13 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Burr |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 19 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Occupation | none |
| Can Read/Write | No |
| 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 Barr across 2 US Census years (1920 and 1930) in Williamsburg, South Carolina, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Barr
Daughter · 1920 · age 10 · b. ~1910 · South Carolina
★ You are viewing this record
Sibling
Gordon Barr
Sibling · 1920 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alfair Barr
Sibling · 1920 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carrie Barr
Sibling · 1920 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mike Barr
Sibling · 1920 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Barr
Sibling · 1920 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ethel Barr
Sibling · 1920 · 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
1920 US Federal Census — Williamsburg, South Carolina
Open full size
1920 US Federal Census — Williamsburg, South Carolina
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1712unit:0428)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Manda Hanna | 9 | Niece | — | South Carolina |
| 52 | Isah Lewis | 26 | Head | Farmer | South Carolina |
| 53 | Lizzie Lewis | 22 | Wife | — | South Carolina |
| 54 | Sol Lewis | 0 | Son | — | South Carolina |
| 55 | Samuel Lewis | 28 | Head | Farmer | South Carolina |
| 56 | Debbie Lewis | 26 | Wife | — | South Carolina |
| 57 | Albert Lewis | 9 | Son | — | South Carolina |
| 58 | Mollie Lewis | 7 | Daughter | — | South Carolina |
| 59 | Blanche Lewis | 6 | Daughter | — | South Carolina |
| 60 | Maude Lewis | 4 | Daughter | — | South Carolina |
| 61 | Earnest Lewis | 1 | Son | — | South Carolina |
| 62 | Rogers Mcalister | 41 | Head | Farmer | South Carolina |
| 63 | Janelle Mcalister | 36 | Wife | — | South Carolina |
| 64 | Eva Mcalister | 8 | Daughter | — | South Carolina |
| 65 | Mellie Mcalister | 2 | Daughter | — | South Carolina |
| 66 | William Nelson | 53 | Head | Farmer | South Carolina |
| 67 | Lizzie Nelson | 40 | Wife | — | South Carolina |
| 68 | Delia Nelson | 16 | Daughter | — | South Carolina |
| 69 | Jackson Nelson | 13 | Son | — | South Carolina |
| 70 | Anderson Nelson | 10 | Son | — | South Carolina |
| 71 | Grace Nelson | 3 | Daughter | — | South Carolina |
| 72 | Mike Barr | 34 | Head | Farmer | South Carolina |
| 73 | Justine Barr | 34 | Wife | — | South Carolina |
| 74 | George Barr | 12 | Son | — | South Carolina |
| 75 | Gordon Barr | 11 | Son | — | South Carolina |
| 76 | Mary Barr THIS PERSON | 10 | Daughter | — | South Carolina |
| 77 | Carrie Barr | 8 | Daughter | — | South Carolina |
| 78 | Alfair Barr | 6 | Daughter | — | South Carolina |
| 79 | Mike Jr. Barr | 4 | Son | — | South Carolina |
| 80 | Ethel Barr | 2 | Daughter | — | South Carolina |
| 81 | Johnson Bradley | 31 | Head | Farmer | South Carolina |
| 82 | Francis Bradley | 21 | Wife | — | South Carolina |
| 83 | Robert Mcdonald | 34 | Head | Farmer | South Carolina |
| 84 | Susan Mcdonald | 25 | Wife | — | South Carolina |
| 85 | Daniel Mcdonald | 8 | Son | — | South Carolina |
| 86 | Johnnie Mcdonald | 6 | Son | — | South Carolina |
| 87 | George Mcdonald | 4 | Son | — | South Carolina |
| 88 | Emmie Mcdonald | 2 | Daughter | — | South Carolina |
| 89 | Boston Marant | 62 | Head | Farmer | South Carolina |
| 90 | Ellen Marant | 46 | Wife | — | South Carolina |
| 91 | Sarah Marant | 12 | Daughter | — | South Carolina |
| 92 | Boston Jr. Marant | 14 | Son | — | South Carolina |
| 93 | Aaron Gamble | 40 | Head | Farmer | South Carolina |
| 94 | Julia Gamble | 41 | Wife | — | South Carolina |
| 95 | Carrie Gamble | 15 | Daughter | — | South Carolina |
| 96 | Pauline Gamble | 8 | Daughter | — | South Carolina |
| 97 | Jordan Gamble | 5 | Daughter | — | South Carolina |
| 98 | Edward Davis | 37 | Head | Farmer | South Carolina |
| 99 | Alice Davis | 44 | Wife | — | South Carolina |
| 100 | Jasper Davis | 24 | Son | Farm Labor | South Carolina |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)