JB
John Blackwell — 1930 US Census Record
Model Tree available1930 United States Federal Census · Chesterfield, South Carolina
Our Model Tree links this John Blackwell across the 1910, 1920 and 1930 US Censuses in Chesterfield, South Carolina (XGBoost, ~Confirmed), with identified parents Joshua & Zachary — first a head (b.~1904), then head of a 4-person household.
Age 26
b. ~1904
Male
Head
Born: South Carolina
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Chesterfield, South Carolina |
| Surname | Blackwell |
| Given Name | John W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | South Carolina |
| Age at First Marriage | 21 |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Additional Details | |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Occupation | Farmer |
| Township / Ward | Alligator Township |
| Est. Birth Year | ~1904 |
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.
4 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Blackwell | Head | — | 26 | ~1904 |
| Marlyn Blackwell | Daughter | — | 4 | ~1926 |
| J Blackwell | Son | — | 2 | ~1928 |
| Pinkie Blackwell | Spouse | — | 24 | ~1906 |
Census Appearances
1910
Chesterfield, South …
Son, age 7
Chesterfield, South Carolina · implied b. ~1903 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blackwell |
| Given Name | Johnney G |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| 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 |
1920
Chesterfield, South …
Son, age 16
Chesterfield, South Carolina · implied b. ~1904 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blackwell |
| Given Name | Johnnie S |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Occupation | Farm Labor |
| Industry | Home Farm |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1930
Chesterfield, South …
Head, age 26
Chesterfield, South Carolina · implied b. ~1904 — 4 household members
| Surname | Blackwell |
| Given Name | John W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | South Carolina |
| Age at First Marriage | 21 |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| 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 John Blackwell across 3 US Census years (1910, 1920 and 1930) in Chesterfield, South Carolina, using XGBoost record linkage. Identified parents: father Joshua Blackwell (~0.92 confidence) and father Zachary Blackwell (~0.92 confidence) and mother Mary Blackwell (~0.92 confidence) and mother Mary Blackwell (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Joshua Blackwell
b. ~1853
Source father
● Household
· direct · ~0.92
Father
Zachary Blackwell
b. ~1863
Source father
● Household
· direct · ~0.92
Mother
Mary Blackwell
b. ~1857
Source mother
● Household
· direct · ~0.92
Mother
Mary Blackwell
b. ~1866
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Blackwell
Head · 1930 · age 26 · b. ~1904 · South Carolina
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Chesterfield, South Carolina
Open full size
1930 US Federal Census — Chesterfield, South Carolina
Page Contents
50 people indexed on this census page (ia:1930:15thcensus2192unit:0320)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Rhoda Campbell | 27 | Wife | — | South Carolina |
| 2 | James G. Campbell | 9 | Son | — | South Carolina |
| 3 | Jennie L. Campbell | 7 | Daughter | — | South Carolina |
| 4 | Mackie M. Campbell | 4 | Son | — | South Carolina |
| 5 | Hannah R. Campbell | 3 | Daughter | — | South Carolina |
| 6 | Gussana H. Mccoy | 45 | Head | Farmer | South Carolina |
| 7 | Sarah J. Mccoy | 40 | Wife | — | South Carolina |
| 8 | Jessie M. Mccoy | 24 | Daughter | — | South Carolina |
| 9 | Lanche M. Mccoy | 22 | Daughter | — | South Carolina |
| 10 | Rinnie Mccoy | 20 | Daughter | — | South Carolina |
| 11 | Henry D. Mccoy | 18 | Son | — | South Carolina |
| 12 | Harry B. Mccoy | 14 | Son | — | South Carolina |
| 13 | Harold H. Mccoy | 8 | Son | — | South Carolina |
| 14 | Agnes Mccoy | 66 | Head | — | North Carolina |
| 15 | Virginia L. Mccoy | 58 | Sister | — | North Carolina |
| 16 | John Grimes | 31 | Head | Farmer | South Carolina |
| 17 | Rosa Grimes | 25 | Wife | — | South Carolina |
| 18 | John W. Blackwell THIS PERSON | 26 | Head | Farmer | South Carolina |
| 19 | Pinkie S. Blackwell | 24 | Wife | — | South Carolina |
| 20 | Marlyn Blackwell | 4 | Daughter | — | South Carolina |
| 21 | J. W. Blackwell | 2 | Son | — | South Carolina |
| 22 | John R. Blackwell | 42 | Head | Farmer | South Carolina |
| 23 | Rosa Blackwell | 45 | Wife | — | South Carolina |
| 24 | Eldridge Blackwell | 23 | Son | — | South Carolina |
| 25 | Tracy Blackwell | 19 | Son | — | South Carolina |
| 26 | Blanche Blackwell | 17 | Daughter | — | South Carolina |
| 27 | Effie Blackwell | 15 | Daughter | — | South Carolina |
| 28 | Margaret Blackwell | 13 | Daughter | — | South Carolina |
| 29 | Samuel Blackwell | 10 | Son | — | South Carolina |
| 30 | William Thompson | 37 | Head | Farmer | South Carolina |
| 31 | Kate S. Thompson | 31 | Wife | — | South Carolina |
| 32 | Duncan M. Thompson | 14 | Son | — | South Carolina |
| 33 | Creighton Thompson | 12 | Son | — | South Carolina |
| 34 | Johnathan Thompson | 10 | Son | — | South Carolina |
| 35 | Violet H. Thompson | 8 | Daughter | — | South Carolina |
| 36 | Ray H. Thompson | 6 | Son | — | South Carolina |
| 37 | Julius Thompson | 3 | Son | — | South Carolina |
| 38 | Lucile M. Thompson | 1 | Daughter | — | South Carolina |
| 39 | Lee J. Raley | 37 | Head | Carpenter | South Carolina |
| 40 | Bertha V. Raley | 35 | Wife | — | South Carolina |
| 41 | Evelyn M. Raley | 16 | Daughter | — | South Carolina |
| 42 | Iva J. Raley | 14 | Daughter | — | South Carolina |
| 43 | Mildred J. Raley | 12 | Daughter | — | South Carolina |
| 44 | Milton J. Raley | 10 | Son | — | South Carolina |
| 45 | Bertha F. Raley | 8 | Daughter | — | South Carolina |
| 46 | Arthur Northcutt | 42 | Head | Farmer | South Carolina |
| 47 | William Northcutt | 21 | Son | Farm Laborer | South Carolina |
| 48 | Fannie L. Northcutt | 17 | Daughter | — | South Carolina |
| 49 | Mallie L. Northcutt | 14 | Daughter | — | South Carolina |
| 50 | Travis Northcutt | 11 | Son | — | South Carolina |
Pedigree Summary
John
Gen 1 · 4 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)