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Mary Blair — 1930 US Census Record
Model Tree available1930 United States Federal Census · Lancaster, South Carolina
Our Model Tree links this Mary Blair across the 1920, 1930 and 1940 US Censuses in Lancaster, South Carolina (XGBoost, ~Confirmed), with identified parents Essex & Melia — first a daughter (b.~1918), then head of a 13-person household.
Age 12
b. ~1918
Female
Daughter
Born: South Carolina
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Lancaster, South Carolina |
| Surname | Blair |
| Given Name | Mary L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 12 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Additional Details | |
| Occupation | Farm Laborer |
| Industry | General Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Occupation | Farm Laborer |
| Township / Ward | Cane Creek Township |
| Est. Birth Year | ~1918 |
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.
13 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Lillie Blair | Daughter | — | 15 | ~1915 |
| Eula Blair | Daughter | — | 17 | ~1913 |
| Melia Blair | Daughter | — | 14 | ~1916 |
| Londa Blair | Daughter | — | 2 | ~1928 |
| Mary Blair | Daughter | — | 12 | ~1918 |
| Essic Blair | Head | — | 43 | ~1887 |
| Eula Blair | Other | — | 1 | ~1929 |
| Allen Blair | Son | — | 16 | ~1914 |
| Rufus Blair | Son | — | 4 | ~1926 |
| Willie Blair | Son | — | 10 | ~1920 |
| R Blair | Son | — | 5 | ~1925 |
| Judas Blair | Son | — | 8 | ~1922 |
| Melia Blair | Spouse | — | 33 | ~1897 |
Census Appearances
1920
Lancaster, South …
Daughter, age 2
Lancaster, South Carolina · implied b. ~1918 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blair |
| Given Name | Mary Louise |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 2 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Occupation | none |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1930
Lancaster, South …
Daughter, age 12
Lancaster, South Carolina · implied b. ~1918 — 13 household members
| Surname | Blair |
| Given Name | Mary L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 12 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Occupation | Farm Laborer |
| Industry | General Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1940
Lancaster-County, South …
Spouse, age 24
Lancaster-County, South Carolina · implied b. ~1916 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blair |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | South Carolina |
| 1935 Residence (City) | Cane Creek Township |
| Highest Grade | No 5 |
| 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 Blair across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Essex Blair (~0.92 confidence) and mother Melia Blair (~0.92 confidence) and mother Melia Blair (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Essex Blair
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Melia Blair
b. ~1888
Source mother
● Household
· direct · ~0.92
Mother
Melia Blair
b. ~1897
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Blair
Daughter · 1930 · age 12 · b. ~1918 · South Carolina
★ You are viewing this record
Sibling
Allen Blair
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eula Blair
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rufus Blair
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Melia Blair
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Londa Blair
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
R Blair
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Judas Blair
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lillie Blair
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Willie Blair
Sibling · 1930 · age 10
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 — Lancaster, South Carolina
Open full size
1930 US Federal Census — Lancaster, South Carolina
Page Contents
50 people indexed on this census page (ia:1930:15thcensus2204unit:0057)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Matthew | 4 | Son | None | South Carolina |
| 52 | Elizabeth | 18 | Daughter | None | South Carolina |
| 53 | Josh M Hill | 60 | Head | Farmer | South Carolina |
| 54 | Sara Hill | 35 | Wife | Farm Laborer | South Carolina |
| 55 | Beal Hill | 70 | Father | — | South Carolina |
| 56 | Mary Hill | 60 | Mother | — | South Carolina |
| 57 | Mattie Hill | 37 | Sister | Farm Laborer | South Carolina |
| 58 | James Hill | 14 | Son | Farm Laborer | South Carolina |
| 59 | Julius L Gregory | 47 | Head | Farmer | South Carolina |
| 60 | Mary Gregory | 45 | Wife | — | North Carolina |
| 61 | Nora Hammond | 74 | Mother-in-law | — | North Carolina |
| 62 | Will Hammond | 39 | Brother-in-law | Farm Laborer | South Carolina |
| 63 | Homer Hammond | 31 | Brother-in-law | Farm Laborer | North Carolina |
| 64 | Franklin E Hammond | 1 | Nephew | — | South Carolina |
| 65 | Mack Thompson | 61 | Head | Farmer | South Carolina |
| 66 | Julia A Thompson | 45 | Daughter | Farm Laborer | South Carolina |
| 67 | Frazer Thompson | 38 | Son | Mill Laborer | South Carolina |
| 68 | Mary Thompson | 28 | Daughter-in-law | Farm Laborer | South Carolina |
| 69 | Robert L Thompson | 4 | G Son | — | South Carolina |
| 70 | Ethel L Thompson | 1 | G Daughter | — | South Carolina |
| 71 | Henry Hughes | 57 | Head | Farmer | South Carolina |
| 72 | Jane Hughes | 48 | Wife | Farm Laborer | South Carolina |
| 73 | Hazel Mackey | 17 | Lodger | Farm Laborer | South Carolina |
| 74 | James C Listare | 34 | Head | Farmer | South Carolina |
| 75 | Hannah M Listare | 30 | Wife | — | North Carolina |
| 76 | James L Listare | 6 | Son | — | North Carolina |
| 77 | Thaddeus E Listare | 4 | Son | — | South Carolina |
| 78 | Essic Blair | 43 | Head | Farmer | South Carolina |
| 79 | Melia Blair | 33 | Wife | Farm Laborer | South Carolina |
| 80 | Lillie Blair | 15 | Daughter | Farm Laborer | South Carolina |
| 81 | Eula Blair | 17 | Daughter | Farm Laborer | South Carolina |
| 82 | Allen Blair | 16 | Son | Farm Laborer | South Carolina |
| 83 | Melia L Blair | 14 | Daughter | Farm Laborer | South Carolina |
| 84 | Mary L Blair THIS PERSON | 12 | Daughter | Farm Laborer | South Carolina |
| 85 | Willie Blair | 10 | Son | — | South Carolina |
| 86 | Judas Blair | 8 | Son | — | South Carolina |
| 87 | R L Blair | 5 | Son | — | South Carolina |
| 88 | Rufus Blair | 4 | Son | — | South Carolina |
| 89 | Londa Blair | 2 | Daughter | — | South Carolina |
| 90 | Eula M Blair | 1 | Gr Daughter | — | South Carolina |
| 91 | James Blair | 21 | Head | Road Laborer | South Carolina |
| 92 | Allie Blair | 17 | Wife | — | South Carolina |
| 93 | James Blair | 1 | Son | — | South Carolina |
| 94 | Annie M Blair | 0 | Daughter | — | South Carolina |
| 95 | Clyde Listare | 43 | Head | Farmer | South Carolina |
| 96 | Sallie B Listare | 31 | Wife | Farm Laborer | South Carolina |
| 97 | Hiram W Listare | 74 | Father | — | South Carolina |
| 98 | Annie L Listare | 12 | Daughter | — | South Carolina |
| 99 | Eugenia M Listare | 9 | Daughter | — | South Carolina |
| 100 | Clyde B Listare | 6 | Son | — | South Carolina |
Pedigree Summary
Mary + 9 siblings
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)