JC
John Cobb — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Polk-County, Georgia
Our Model Tree links this John Cobb across the 1930 and 1940 US Censuses in Polk-County, Georgia (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 11-person household.
Age 13
b. ~1927
Male
Son
Born: Georgia
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Georgia |
| Surname | Cobb |
| Given Name | John C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Georgia |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Highest Grade | No 3 |
| 1935 Residence | Georgia |
| Birth State | Georgia |
| Birth Country | United States |
| Birthplace (normalized) | georgia |
| Township / Ward | 1075 M D Cedartown |
| Est. Birth Year | ~1927 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Levina Cobb | Other | — | 73 | ~1867 |
| Marly Cobb | Daughter | — | 3 | ~1937 |
| Ruby Cobb | Daughter | — | 5 | ~1935 |
| Bertha Cobb | Spouse | — | 34 | ~1906 |
| Fred Cobb | Son | — | 8 | ~1932 |
| John Cobb | Son | — | 13 | ~1927 |
| Claude Cobb | Head | — | 38 | ~1902 |
| Elise Cobb | Daughter | — | 15 | ~1925 |
| William Cobb | Son | — | 17 | ~1923 |
| J Cobb | Son | — | 10 | ~1930 |
| Lola Cobb | Daughter | — | 1 | ~1939 |
Census Appearances
1930
Polk, Georgia
Other, age 3
Polk, Georgia · implied b. ~1927 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cobb |
| Given Name | John C. |
| Relationship to Head | Grandson |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Georgia |
| Father's Birthplace | Georgia |
| Mother's Birthplace | Georgia |
| Occupation | none |
| Birth State | Georgia |
| Birth Country | United States |
| Birthplace (normalized) | georgia |
1940
Polk-County, Georgia
Son, age 13
Polk-County, Georgia · implied b. ~1927 — 11 household members
| Surname | Cobb |
| Given Name | John C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Georgia |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Polk |
| Highest Grade | No 3 |
| 1935 Residence | Georgia |
| Birth State | Georgia |
| Birth Country | United States |
| Birthplace (normalized) | georgia |
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 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Cobb
Son · 1940 · age 13 · b. ~1927 · Georgia
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Sibling
Ruby Cobb
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marly Cobb
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elise Cobb
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Fred Cobb
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Cobb
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
J Cobb
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lola Cobb
Sibling · 1940 · age 1
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
1940 US Federal Census — Polk-County, Georgia
Open full size
1940 US Federal Census — Polk-County, Georgia
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00702-00535)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Earnest Dismuke|Dismukes | 33 | Head | Operator | Georgia |
| 42 | Thelma Dismuke|Dismukes | 30 | Wife | — | Georgia |
| 43 | Earnest Jr Dismuke|Dismukes | 8 | Son | — | Georgia |
| 44 | John H. Sutton | 62 | Head | Teacher | Georgia |
| 45 | Bessie B. Sutton | 64 | Wife | — | Georgia |
| 46 | Mabel Sutton | 27 | Son | Finisher | Georgia |
| 47 | Joe E. Hopper | 38 | Head | Doffer | Georgia |
| 48 | Lucille S. Hopper | 35 | Wife | — | Georgia |
| 49 | Joe Jane Hopper | 8 | Daughter | — | Georgia |
| 50 | Arthur W. Coy | 48 | Head | Miller | Georgia |
| 51 | Bobby Coy | 18 | Son | — | Georgia |
| 52 | Lillian A. Coy | 15 | Daughter | — | Georgia |
| 53 | Mary J. Coy | 12 | Daughter | — | Georgia |
| 54 | Samuel L. Pittman | 62 | Head | Proprietor | Georgia |
| 55 | Annie W. Pittman | 56 | Wife | — | Georgia |
| 56 | Lila M. Pittman | 20 | Daughter | — | Georgia |
| 57 | Lila H. Frauer|Fraser | 59 | Head | — | Georgia |
| 58 | Lucille M. Frauer|Fraser | 28 | Daughter | — | Georgia |
| 59 | Shirley A. Wiggins | 23 | Son-in-law | Carder | Georgia |
| 60 | Merle F. Wiggins | 22 | Daughter | — | Georgia |
| 61 | James D. Wiggins | 1 | Grandson | — | Georgia |
| 62 | Monroe Howard | 62 | Brother | Cabinet Maker | Georgia |
| 63 | Claude H. Cobb | 38 | Head | Operator | Georgia |
| 64 | Bertha A. Cobb | 34 | Wife | — | Georgia |
| 65 | William L. Cobb | 17 | Son | — | South Carolina |
| 66 | Elise Cobb | 15 | Daughter | — | Georgia |
| 67 | John C. Cobb THIS PERSON | 13 | Son | — | Georgia |
| 68 | J. D. Cobb | 10 | Son | — | Georgia |
| 69 | Fred Cobb | 8 | Son | — | Georgia |
| 70 | Ruby M. Cobb | 5 | Daughter | — | Georgia |
| 71 | Marly V. Cobb | 3 | Daughter | — | Georgia |
| 72 | Lola B. Cobb | 1 | Daughter | — | Georgia |
| 73 | Levina C. Cobb | 73 | Mother | — | South Carolina |
| 74 | Willard Richardson | 40 | Head | Dyer | Georgia |
| 75 | Louella E. Richardson | 35 | Wife | Helper In Spool Room | Georgia |
| 76 | William E. Richardson | 17 | Son | — | Georgia |
| 77 | Janice C. Richardson | 15 | Daughter | — | Georgia |
| 78 | Ella R. Richardson | 10 | Daughter | — | Georgia |
| 79 | Lanice E. Richardson | 3 | Daughter | — | Georgia |
| 80 | Julia D. Ellis | 62 | Mother-in-law | — | Georgia |
Related Census Records
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)