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Mary Bradford — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Sumter, South Carolina
Our Model Tree links this Mary Bradford across the 1930 and 1940 US Censuses in Sumter, South Carolina (XGBoost, ~Confirmed) — first a daughter (b.~1919), then head of a 7-person household.
Age 11
b. ~1919
Female
Daughter
Born: South Carolina
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Sumter, South Carolina |
| Surname | Bradford |
| Given Name | Mary L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Township / Ward | Sumter City |
| Est. Birth Year | ~1919 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| William Bradford | Son | — | 3 | ~1927 |
| Mary Bradford | Daughter | — | 11 | ~1919 |
| Bettie Bradford | Daughter | — | 8 | ~1922 |
| Isaac Bradford | Head | — | 48 | ~1882 |
| Richard Bradford | Son | — | 16 | ~1914 |
| Edward Bradford | Son | — | 13 | ~1917 |
| John Bradford | Son | — | 6 | ~1924 |
Census Appearances
1930
Sumter, South …
Daughter, age 11
Sumter, South Carolina · implied b. ~1919 — 7 household members
| Surname | Bradford |
| Given Name | Mary L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Can Read/Write | Yes |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1940
Sumter-County, South …
Daughter, age 22
Sumter-County, South Carolina · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bradford |
| Given Name | Mae |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 22 |
| Marital Status | Single |
| Birthplace | South Carolina |
| 1935 Residence (City) | Sumter township |
| 1935 Residence (County) | Sumter |
| Occupation | Servant |
| Industry | Private Home |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 96 |
| Highest Grade | No 7 |
| 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 Bradford across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Bradford
Daughter · 1930 · age 11 · b. ~1919 · South Carolina
★ You are viewing this record
Sibling
Richard Bradford
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Bradford
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Bradford
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Bradford
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bettie Bradford
Sibling · 1930 · age 8
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
1930 US Federal Census — Sumter, South Carolina
Open full size
1930 US Federal Census — Sumter, South Carolina
Page Contents
56 people indexed on this census page (ia:1930:15thcensus2214unit:0250)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Isaac Bradford | 48 | Head | Salesman | South Carolina |
| 2 | Richard Bradford | 16 | Son | — | South Carolina |
| 3 | Edward Bradford | 13 | Son | — | South Carolina |
| 4 | Mary L Bradford THIS PERSON | 11 | Daughter | — | South Carolina |
| 5 | John Bradford | 6 | Son | — | South Carolina |
| 6 | Bettie E Bradford | 8 | Daughter | — | South Carolina |
| 7 | William Bradford | 3 | Son | — | South Carolina |
| 8 | David J Collins | 34 | Head | Partner | South Carolina |
| 9 | Helen L Collins | 31 | Wife | — | South Carolina |
| 10 | Dorothy Collins | 11 | Daughter | — | South Carolina |
| 11 | Lois Collins | 8 | Daughter | — | South Carolina |
| 12 | David Jr Collins | 5 | Son | — | South Carolina |
| 13 | Barr | 79 | Father | — | South Carolina |
| 14 | Annie E Cowan | 33 | Head | Manager | Georgia |
| 15 | Mary A Cowan | 2 | Daughter | — | Georgia |
| 16 | Patricia Cowan | 3 | Daughter | — | South Carolina |
| 17 | Thomas C Read | 47 | Head | Foreman | South Carolina |
| 18 | Lelia H Read | 45 | Wife | Librarian | South Carolina |
| 19 | Elizabeth Read | 21 | Daughter | — | South Carolina |
| 20 | Elizabeth Read | 19 | Daughter | — | South Carolina |
| 21 | Thomas Read | 17 | Son | Laborer | South Carolina |
| 22 | Thomas Jr Read | 14 | Son | Newsboy | South Carolina |
| 23 | Clement N Read | 12 | Son | — | South Carolina |
| 24 | Harry Jr Parker | 45 | Head | Physician | North Carolina |
| 25 | Esther Parker | 39 | Wife | — | North Carolina |
| 26 | Esther Parker | 11 | Daughter | — | Colorado |
| 27 | Harry Jr Parker | 7 | Son | — | Colorado |
| 28 | Mary L Parker | 3 | Daughter | — | Colorado |
| 29 | Rufus S Moore | 58 | Head | Money Clerk | South Carolina |
| 30 | Hattie Moore | 53 | Wife | — | Poland |
| 31 | Phil Boyle | 46 | Head | — | South Carolina |
| 32 | Pringle Boyle | 12 | Son | — | South Carolina |
| 33 | Pringle Jr Boyle | 6 | Son | — | South Carolina |
| 34 | John O Booth | 62 | Head | Preacher | South Carolina |
| 35 | Hattie Booth | 63 | Wife | — | South Carolina |
| 36 | Carlisle A Booth | 21 | Son | — | South Carolina |
| 37 | Lawrence Coffey | 52 | Head | Proprietor | Russia |
| 38 | Fannie Coffey | 42 | Wife | — | Russia |
| 39 | Ruth Coffey | 7 | Daughter | — | New York |
| 40 | John Coffey | 3 | Son | — | South Carolina |
| 41 | Solomon Dussport | 60 | Brother-in-law | Salesman | Russia |
| 42 | Joseph Nettles | 52 | Head | Superintendent | Missouri |
| 43 | Lenora Nettles | 52 | Wife | — | South Carolina |
| 44 | Patrick Gallagher | 50 | Head | Partner | Free Ireland |
| 45 | Miriam Gallagher | 42 | Wife | — | South Carolina |
| 46 | Idell Mellette | 74 | Mother-in-law | — | South Carolina |
| 47 | Robert Dixon | 56 | Head | Salesman | South Carolina |
| 48 | Lillian Dixon | 41 | Wife | Bookkeeper | South Carolina |
| 49 | Joseph Dixon | 16 | Son | — | South Carolina |
| 50 | Love Smith | 30 | Head | — | South Carolina |
| 51 | Love Jr Smith | 8 | Son | — | South Carolina |
| 52 | William Smith | 6 | Son | — | South Carolina |
| 53 | Robert Smith | 4 | Son | — | South Carolina |
| 54 | Mary Smith | 2 | Daughter | — | South Carolina |
| 55 | John Smith | 1 | Son | — | South Carolina |
| 56 | James Smith | 0 | Son | — | South Carolina |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)