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Isaac Johnson — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Sumter, South Carolina
Our Model Tree links this Isaac Johnson across the 1910, 1920 and 1930 US Censuses in Sumter, South Carolina (XGBoost, ~Confirmed) — first a head (b.~1874), then head of a 8-person household.
Age 56
b. ~1874
Male
Head
Born: South Carolina
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Sumter, South Carolina |
| Surname | Johnson |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 56 |
| 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 | VVVV |
| Can Read/Write | No |
| Home Owned/Rented | O |
| Veteran | no |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Occupation | Farmer |
| Township / Ward | Statesburg Township Part |
| Est. Birth Year | ~1874 |
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.
8 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Isaac | Age | Birth yr |
|---|---|---|---|---|
| Rosa Johnson | Daughter | — | 25 | ~1905 |
| Rebecca Johnson | Daughter | — | 12 | ~1918 |
| Isaac Johnson | Head | — | 56 | ~1874 |
| Ellen Johnson | Other | — | 54 | ~1876 |
| Woodrow Johnson | Son | — | 19 | ~1911 |
| Stephen Johnson | Son | — | 22 | ~1908 |
| Jacob Johnson | Son | — | 28 | ~1902 |
| Booker Johnson | Son | — | 16 | ~1914 |
Census Appearances
1910
Marion, South …
Head, age 35
Marion, South Carolina · implied b. ~1875 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 35 |
| Marital Status | Married |
| Birthplace | South Carolina |
| Years Married | 14 |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Occupation | Farmer |
| Industry | General Farm |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1920
Washington, South …
Head, age 46
Washington, South Carolina · implied b. ~1874 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 46 |
| Marital Status | Married |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1930
Sumter, South …
Head, age 56
Sumter, South Carolina · implied b. ~1874 — 8 household members
| Surname | Johnson |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 56 |
| 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 | VVVV |
| Can Read/Write | No |
| Home Owned/Rented | O |
| Veteran | no |
| 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 Isaac Johnson across 3 US Census years (1910, 1920 and 1930) in 3 locations, using XGBoost record linkage.
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This person
Anchor record
Isaac Johnson
Head · 1930 · age 56 · b. ~1874 · South Carolina
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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
50 people indexed on this census page (ia:1930:15thcensus2214unit:0136)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Earline Douglas | 8 | Daughter | None | South Carolina |
| 2 | Addie M. Douglas | 6 | Daughter | None | South Carolina |
| 3 | Sam Conyers | 58 | Head | Laborer | South Carolina |
| 4 | Benjamin J. Johnson | 33 | Head | Farmer | South Carolina |
| 5 | Nellie Johnson | 29 | Wife-H | Laborer | South Carolina |
| 6 | Benjamin J. Jr. Johnson | 5 | Son | None | South Carolina |
| 7 | Isaac Johnson THIS PERSON | 56 | Head | Farmer | South Carolina |
| 8 | Ellen Johnson | 54 | Wife-H | Laborer | South Carolina |
| 9 | Jacob Jr. Johnson | 28 | Son | Laborer | South Carolina |
| 10 | Rosa Johnson | 25 | Daughter | Teacher | South Carolina |
| 11 | Stephen A. Johnson | 22 | Son | None | South Carolina |
| 12 | Woodrow Johnson | 19 | Son | Laborer | South Carolina |
| 13 | Booker Johnson | 16 | Son | Laborer | South Carolina |
| 14 | Rebecca Johnson | 12 | Daughter | None | South Carolina |
| 15 | George Chapman | 48 | Head | Farmer | South Carolina |
| 16 | Arabella Chapman | 46 | Wife-H | Laborer | South Carolina |
| 17 | Sarah L. Chapman | 18 | Daughter | Laborer | South Carolina |
| 18 | David H. Maples | 54 | Head | Farmer | South Carolina |
| 19 | Susanna Maples | 49 | Wife-H | Laborer | South Carolina |
| 20 | Clinton Maples | 19 | Son | Laborer | South Carolina |
| 21 | Lola Maples | 17 | Daughter | Laborer | South Carolina |
| 22 | Louella Maples | 12 | Daughter | None | South Carolina |
| 23 | Jeff Anderson | 20 | Head | Farmer | South Carolina |
| 24 | Frances Anderson | 20 | Wife-H | Laborer | South Carolina |
| 25 | James J. Anderson | 1 | Son | None | South Carolina |
| 26 | William Henderson | 22 | Head | Farmer | South Carolina |
| 27 | Elsie Henderson | 32 | Wife-H | Laborer | South Carolina |
| 28 | Henry C. Henderson | 65 | Head | Farmer | South Carolina |
| 29 | Robert Bracey | 21 | Head | Farmer | South Carolina |
| 30 | Jessie M. Bracey | 19 | Wife-H | Laborer | South Carolina |
| 31 | Hassie Bracey | 55 | Mother | Laborer | South Carolina |
| 32 | Saintly Bracey | 17 | Sister | Laborer | South Carolina |
| 33 | Benjamin J. Pitts | 50 | Head | Farmer | South Carolina |
| 34 | Florence Pitts | 35 | Wife-H | Laborer | South Carolina |
| 35 | Mary L. Pitts | 16 | Daughter | Laborer | South Carolina |
| 36 | Isola Pitts | 14 | Daughter | Laborer | South Carolina |
| 37 | John Pitts | 12 | Son | None | South Carolina |
| 38 | Julius Pitts | 10 | Son | None | South Carolina |
| 39 | Bernice Pitts | 6 | Daughter | None | South Carolina |
| 40 | Nat Rembert | 25 | Head | Farmer | South Carolina |
| 41 | Grace Rembert | 24 | Wife-H | Laborer | South Carolina |
| 42 | Julia V. Rembert | 5 | Daughter | None | South Carolina |
| 43 | Nathaniel Rembert | 3 | Son | None | South Carolina |
| 44 | Irene Rembert | 0 | Daughter | None | South Carolina |
| 45 | James Staton | 22 | Head | Laborer | South Carolina |
| 46 | Rebecca Staton | 20 | Wife-H | Laborer | South Carolina |
| 47 | Rosevelt Choice | 39 | Head | Laborer | South Carolina |
| 48 | Mattie Choice | 35 | Wife-H | Laborer | South Carolina |
| 49 | Daisy Choice | 11 | Daughter | None | South Carolina |
| 50 | Rosevelt Jr. Choice | 9 | Son | None | 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)