JC
John Cobb — 1930 US Census Record
Model Tree available1930 United States Federal Census · Oconee, South Carolina
Our Model Tree links this John Cobb across the 1920, 1930 and 1940 US Censuses in Oconee, South Carolina (XGBoost, ~Confirmed), with identified parents Mary & Rayland — first a head (b.~1902), then head of a 7-person household.
Age 28
b. ~1902
Male
Head
Born: South Carolina
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Oconee, South Carolina |
| Surname | Cobb |
| Given Name | John B. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | South Carolina |
| Age at First Marriage | 20 |
| 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 | O |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Occupation | Farmer |
| Township / Ward | Tugaloo Township |
| Est. Birth Year | ~1902 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Henry Cobb | Son | — | 5 | ~1925 |
| Louise Cobb | Daughter | — | 8 | ~1922 |
| John Cobb | Head | — | 28 | ~1902 |
| Daisy Cobb | Other | — | 24 | ~1906 |
| Paul Cobb | Son | — | 6 | ~1924 |
| Ruth Cobb | Daughter | — | 3 | ~1927 |
| Willie Cobb | Son | — | ~1930 |
Census Appearances
1920
Oconee, South …
Son, age 17
Oconee, South Carolina · implied b. ~1903 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cobb |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Occupation | Farm |
| Industry | Helper |
| 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
Oconee, South …
Head, age 28
Oconee, South Carolina · implied b. ~1902 — 7 household members
| Surname | Cobb |
| Given Name | John B. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | South Carolina |
| Age at First Marriage | 20 |
| 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 | O |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1940
Oconee-County, South …
Head, age 40
Oconee-County, South Carolina · implied b. ~1900 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cobb |
| Given Name | Jonah O. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | South Carolina |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Morgan |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Georgia |
| 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 Cobb across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Mary Cobb (~0.92 confidence) and father Rayland Cobb (~0.60 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.76
Mother
Mary Cobb
b. ~1860
Source mother
● Household
· direct · ~0.92
Father
Rayland Cobb
b. ~1893
Source father
● Household
· direct · ~0.6
This person
Anchor record
John Cobb
Head · 1930 · age 28 · b. ~1902 · 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 — Oconee, South Carolina
Open full size
1930 US Federal Census — Oconee, South Carolina
Page Contents
50 people indexed on this census page (ia:1930:15thcensus2207unit:0646)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | David A. Wilson | 23 | Head | Farm Operator | South Carolina |
| 52 | Vera Wilson | 21 | Wife-H | Farm Laborer | South Carolina |
| 53 | Rudolph Wilson | 2 | Son | — | South Carolina |
| 54 | Lloyd Wilson | 1 | Son | — | South Carolina |
| 55 | Ollie M. Wilson | 0 | Daughter | — | South Carolina |
| 56 | Robert R. Pitts | 27 | Head | Farm Operator | South Carolina |
| 57 | Sara Pitts | 68 | Wife-H | — | South Carolina |
| 58 | Ross Grant | 40 | Boarder | Farm Laborer | South Carolina |
| 59 | John E. Burnside | 50 | Head | Farm Operator | South Carolina |
| 60 | Hattie Burnside | 35 | Wife-H | Farm Laborer | South Carolina |
| 61 | James Burnside | 15 | Son | Farm Laborer | South Carolina |
| 62 | Annie Burnside | 11 | Daughter | Farm Laborer | South Carolina |
| 63 | Glen Burnside | 9 | Son | Farm Laborer | South Carolina |
| 64 | Joseph L. Crolotte | 45 | Head | Farm Operator | South Carolina |
| 65 | Corrie Crolotte | 38 | Wife-H | Farm Laborer | South Carolina |
| 66 | Hoyt Crolotte | 10 | Son | Farm Laborer | South Carolina |
| 67 | Hattie Crolotte | 9 | Daughter | — | South Carolina |
| 68 | Burtis Kelley | 22 | Boarder | Farm Laborer | South Carolina |
| 69 | Rufus L. Rholetter | 39 | Head | Farm Operator | South Carolina |
| 70 | Maggie Rholetter | 31 | Wife-H | Farm Laborer | South Carolina |
| 71 | Ephraim W. Cobb | 40 | Head | Farmer | South Carolina |
| 72 | Mary E. Cobb | 38 | Wife-H | Farmer | South Carolina |
| 73 | Louis L. Cobb | 18 | Head | Farmer | South Carolina |
| 74 | Bertha Cobb | 20 | Wife-H | Farmer | South Carolina |
| 75 | Hubert Cobb | 0 | Son | — | South Carolina |
| 76 | Willie L. Cobb | 31 | Head | Farmer | South Carolina |
| 77 | Mary Cobb | 25 | Wife-H | Farmer | South Carolina |
| 78 | Frankie Cobb | 6 | Daughter | — | South Carolina |
| 79 | Calvin Cobb | 3 | Son | — | South Carolina |
| 80 | John B. Cobb THIS PERSON | 28 | Head | Farmer | South Carolina |
| 81 | Daisy Cobb | 24 | Wife-H | Farmer | South Carolina |
| 82 | Louise Cobb | 8 | Daughter | — | South Carolina |
| 83 | Paul Cobb | 6 | Son | — | South Carolina |
| 84 | Henry Cobb | 5 | Son | — | South Carolina |
| 85 | Ruth Cobb | 3 | Daughter | — | South Carolina |
| 86 | Willie Cobb | 0 | Son | — | South Carolina |
| 87 | Henry C. Chambers | 26 | Head | Farmer | South Carolina |
| 88 | Hallie Chambers | 25 | Wife-H | — | South Carolina |
| 89 | Elsie Chambers | 5 | Daughter | — | South Carolina |
| 90 | Ruby Chambers | 3 | Daughter | — | South Carolina |
| 91 | Gladys Chambers | 2 | Daughter | — | South Carolina |
| 92 | Roland Cobb | 68 | Head | — | South Carolina |
| 93 | Ida M. Cobb | 70 | Wife-H | — | South Carolina |
| 94 | John H. Blackwell | 39 | Head | Sawyer | South Carolina |
| 95 | Rosie Blackwell | 40 | Wife-H | — | South Carolina |
| 96 | Charles R. Cobb | 38 | Head | Farmer | South Carolina |
| 97 | Bessie Cobb | 32 | Wife-H | Farmer | South Carolina |
| 98 | Pauline Cobb | 10 | Daughter | — | South Carolina |
| 99 | Mildred Cobb | 6 | Daughter | — | South Carolina |
| 100 | Julian Cobb | 42 | Head | Farmer | South Carolina |
Pedigree Summary
John
Gen 1 · 2 parents
~0.76
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)