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Mary Barr — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Williamsburg-County, South Carolina
Our Model Tree links this Mary Barr across the 1920, 1930 and 1940 US Censuses in Williamsburg-County, South Carolina (XGBoost, ~Confirmed) — first a head (b.~1891), then head of a 3-person household.
Age 49
b. ~1891
Female
Head
Born: South Carolina
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Williamsburg-County, South Carolina |
| Surname | Barr |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | Black |
| Age | 49 |
| Marital Status | Widowed |
| Birthplace | South Carolina |
| 1935 Residence (City) | Ridge Township |
| 1935 Residence (County) | Williamsburg |
| Additional Details | |
| Occupation | Operator |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | No 0 |
| 1935 Residence | Same place |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Occupation | Operator |
| Township / Ward | Ridge Township |
| Est. Birth Year | ~1891 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Virginia Barr | Daughter | — | 13 | ~1927 |
| Lawrence Barr | Son | — | 15 | ~1925 |
| Mary Barr | Head | — | 49 | ~1891 |
Census Appearances
1920
Williamsburg, South …
Spouse, age 35
Williamsburg, South Carolina · implied b. ~1885 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Barr |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 35 |
| Marital Status | Married |
| 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 …
Other, age 42
Williamsburg, South Carolina · implied b. ~1888 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Barr |
| Given Name | Mary |
| Relationship to Head | wife H |
| Sex | F |
| Color / Race | Black |
| Age | 42 |
| Marital Status | Married |
| Birthplace | South Carolina |
| Age at First Marriage | 19 |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Occupation | Laborer |
| Industry | Gen. farm |
| Class of Worker | W |
| Can Read/Write | No |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1940
Williamsburg-County, South …
Head, age 49
Williamsburg-County, South Carolina · implied b. ~1891 — 3 household members
| Surname | Barr |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | Black |
| Age | 49 |
| Marital Status | Widowed |
| Birthplace | South Carolina |
| 1935 Residence (City) | Ridge Township |
| 1935 Residence (County) | Williamsburg |
| Occupation | Operator |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | No 0 |
| 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 Barr across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Barr
Head · 1940 · age 49 · b. ~1891 · South Carolina
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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-t0627-03844-00824)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Manning Dixon | 26 | Son in law | Operator | South Carolina |
| 42 | Virginia Dixon | 26 | Daughter | — | South Carolina |
| 43 | Moses Barr | 40 | Head | Operator | South Carolina |
| 44 | Flossie Barr | 37 | Wife | — | South Carolina |
| 45 | Florie Mae Barr | 13 | Daughter | — | South Carolina |
| 46 | Dorothy E Barr | 12 | Daughter | — | South Carolina |
| 47 | Dudley Barr | 10 | Son | — | South Carolina |
| 48 | Charles Jr Barr | 9 | Son | — | South Carolina |
| 49 | James D Barr | 7 | Son | — | South Carolina |
| 50 | Edward Barr | 5 | Son | — | South Carolina |
| 51 | Amegle Barr | 3 | Daughter | — | South Carolina |
| 52 | Annette Barr | 1 | Daughter | — | South Carolina |
| 53 | Nelson Barr | 47 | Head | Operator | South Carolina |
| 54 | Chloe Barr | 34 | Wife | — | South Carolina |
| 55 | Katherine Barr | 20 | Daughter | — | South Carolina |
| 56 | Mildred Barr | 15 | Daughter | — | South Carolina |
| 57 | Earnestine Barr | 13 | Daughter | — | South Carolina |
| 58 | Willie B Barr | 11 | Daughter | — | South Carolina |
| 59 | Patsy Nell Barr | 9 | Daughter | — | South Carolina |
| 60 | James Nesmith | 46 | Head | Operator | South Carolina |
| 61 | Flora Nesmith | 46 | Wife | Teacher | South Carolina |
| 62 | James Jr Nesmith | 11 | Son | — | South Carolina |
| 63 | John Parson | 27 | Nephew | Farm Laborer | South Carolina |
| 64 | Mary Barr THIS PERSON | 49 | Head | Operator | South Carolina |
| 65 | Lawrence Barr | 15 | Son | Farm Laborer | South Carolina |
| 66 | Virginia Barr | 13 | Daughter | — | South Carolina |
| 67 | Franklin Montgomery | 41 | Head | Operator | South Carolina |
| 68 | Carrie Montgomery | 37 | Wife | — | South Carolina |
| 69 | Source Epps | 23 | Adopted son | — | South Carolina |
| 70 | Ardell Montgomery | 9 | Daughter | — | South Carolina |
| 71 | Alla Mae Montgomery | 1 | Daughter | — | South Carolina |
| 72 | Hilly Prinsley | 27 | Head | Operator | South Carolina |
| 73 | Eliza Prinsley | 24 | Wife | — | South Carolina |
| 74 | Harkless Prinsley | 8 | Daughter | — | South Carolina |
| 75 | Lilly Prinsley | 7 | Son | — | South Carolina |
| 76 | Argee Prinsley | 2 | Son | — | South Carolina |
| 77 | Arthur Pompey | 27 | Head | Operator | South Carolina |
| 78 | Hattie Pompey | 27 | Wife | — | South Carolina |
| 79 | Earnie Mae Pompey | 7 | Daughter | — | South Carolina |
| 80 | Bernice Pompey | 4 | Daughter | — | South Carolina |
Related Census Records
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)