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Mary Barr — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Florence-County, South Carolina
Our Model Tree links this Mary Barr across the 1930 and 1940 US Censuses in Florence-County, South Carolina (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 7-person household.
Age 11
b. ~1929
Female
Daughter
Born: South Carolina
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Florence-County, South Carolina |
| Surname | Barr |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Johnson Township |
| 1935 Residence (County) | Florence |
| Additional Details | |
| Highest Grade | No 3 |
| 1935 Residence | Same Place |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Township / Ward | Johnson 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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Richard Barr | Son | — | 10 | ~1930 |
| Leon Barr | Son | — | 15 | ~1925 |
| Eugene Barr | Son | — | 9 | ~1931 |
| Mary Barr | Daughter | — | 11 | ~1929 |
| Joseph Barr | Son | — | 11 | ~1929 |
| Richard Barr | Head | — | 39 | ~1901 |
| Elda Barr | Spouse | — | 30 | ~1910 |
Census Appearances
1930
Florence, South …
Daughter, age 1
Florence, South Carolina · implied b. ~1929 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Barr |
| Given Name | Mary Sue |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 1 |
| 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
Florence-County, South …
Daughter, age 11
Florence-County, South Carolina · implied b. ~1929 — 7 household members
| Surname | Barr |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Johnson Township |
| 1935 Residence (County) | Florence |
| Highest Grade | No 3 |
| 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 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Barr
Daughter · 1940 · age 11 · b. ~1929 · South Carolina
★ You are viewing this record
Sibling
Leon Barr
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eugene Barr
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Barr
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Barr
Sibling · 1940 · age 11
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 — Florence-County, South Carolina
Open full size
1940 US Federal Census — Florence-County, South Carolina
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03809-00117)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Bessie Barr | 24 | Wife | — | South Carolina |
| 42 | David Barr | 8 | Son | — | South Carolina |
| 43 | J. W. Barr | 5 | Son | — | South Carolina |
| 44 | Thomas Barr | 2 | Son | — | South Carolina |
| 45 | Arthur Barr | 0 | Son | — | South Carolina |
| 46 | John H. White | 25 | Head | Laborer | South Carolina |
| 47 | Betha White | 26 | Wife | — | South Carolina |
| 48 | Minna White | 7 | Daughter | — | South Carolina |
| 49 | Setha White | 4 | Daughter | — | South Carolina |
| 50 | John White | 3 | Son | — | South Carolina |
| 51 | Anna White | 1 | Daughter | — | South Carolina |
| 52 | Maggie White | 33 | Sister | — | South Carolina |
| 53 | Anna White | 13 | Niece | — | South Carolina |
| 54 | Elster S. Hanna | 29 | Head | Farm Laborer | South Carolina |
| 55 | Sallie Hanna | 23 | Wife | — | South Carolina |
| 56 | Billy Hanna | 4 | Daughter | — | South Carolina |
| 57 | Etherdean Hanna | 2 | Daughter | — | South Carolina |
| 58 | Arthur Hanna | 54 | Father | — | South Carolina |
| 59 | Everett Hanna | 26 | Brother | Farm Laborer | South Carolina |
| 60 | Fort N. Cox | 47 | Head | Farmer | South Carolina |
| 61 | Ella Cox | 53 | Wife | — | South Carolina |
| 62 | Sonnie Cox | 21 | Son | Automobile Mechanic | South Carolina |
| 63 | Charles Cox | 18 | Son | Farm Laborer | South Carolina |
| 64 | Preston G. Taylor | 70 | Head | Farmer | South Carolina |
| 65 | Della Taylor | 65 | Wife | — | South Carolina |
| 66 | Minna Elala Taylor | 42 | Daughter | — | South Carolina |
| 67 | Willie Taylor | 60 | Son-in-law | Time-Keeper | South Carolina |
| 68 | Elster Taylor | 22 | Son | Clerk | South Carolina |
| 69 | Frances Taylor | 24 | Daughter-in-law | — | South Carolina |
| 70 | Loyal G. Carroway | 28 | Head | Foreman | South Carolina |
| 71 | Doris Carroway | 27 | Wife | — | South Carolina |
| 72 | James Carroway | 5 | Son | — | South Carolina |
| 73 | Bell Carroway | 1 | Daughter | — | South Carolina |
| 74 | Richard Barr | 39 | Head | Farmer | South Carolina |
| 75 | Elda Barr | 30 | Wife | — | South Carolina |
| 76 | Leon Barr | 15 | Son | — | South Carolina |
| 77 | Joseph Barr | 11 | Son | — | South Carolina |
| 78 | Mary Barr THIS PERSON | 11 | Daughter | — | South Carolina |
| 79 | Richard Jr. Barr | 10 | Son | — | South Carolina |
| 80 | Eugene Barr | 9 | 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)