JC
John Cobb — 1940 US Census Record
Model Tree available1940 United States Federal Census · Madison-County, Tennessee
Our Model Tree links this John Cobb across the 1920, 1930 and 1940 US Censuses in Madison-County, Tennessee (XGBoost, ~Confirmed), with identified parents M & William — first a head (b.~1917), then head of a 3-person household.
Age 23
b. ~1917
Male
Head
Born: Tennessee
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Madison-County, Tennessee |
| Surname | Cobb |
| Given Name | John E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Tennessee |
| 1935 Residence (City) | Bemis Town |
| 1935 Residence (County) | Madison |
| Additional Details | |
| Occupation | Laborer |
| Industry | Cotton Mill |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 388 |
| Highest Grade | 6 |
| 1935 Residence | Same place |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
| Occupation | Laborer |
| Township / Ward | Bemis Town |
| Est. Birth Year | ~1917 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Earnestine Cobb | Spouse | — | 20 | ~1920 |
| John Cobb | Head | — | 23 | ~1917 |
| Charles Cobb | Son | — | 2 | ~1938 |
Census Appearances
1920
Madison, Tennessee
Son, age 3
Madison, Tennessee · implied b. ~1917 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cobb |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Tennessee |
| Father's Birthplace | North Carolina |
| Mother's Birthplace | Tennessee |
| Speaks English | Yes |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
1930
Madison, Tennessee
Son, age 14
Madison, Tennessee · implied b. ~1916 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cobb |
| Given Name | John E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Tennessee |
| Father's Birthplace | North Carolina |
| Mother's Birthplace | Tennessee |
| Occupation | Helper |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
1940
Madison-County, Tennessee
Head, age 23
Madison-County, Tennessee · implied b. ~1917 — 3 household members
| Surname | Cobb |
| Given Name | John E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Tennessee |
| 1935 Residence (City) | Bemis Town |
| 1935 Residence (County) | Madison |
| Occupation | Laborer |
| Industry | Cotton Mill |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 388 |
| Highest Grade | 6 |
| 1935 Residence | Same place |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
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: father M Cobb (~0.92 confidence) and father William Cobb (~0.92 confidence) and mother Ida Cobb (~0.92 confidence) and mother Ida Cobb (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
M Cobb
b. ~1874
Source father
● Household
· direct · ~0.92
Father
William Cobb
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Ida Cobb
b. ~1883
Source mother
● Household
· direct · ~0.92
Mother
Ida Cobb
b. ~1885
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Cobb
Head · 1940 · age 23 · b. ~1917 · Tennessee
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Madison-County, Tennessee
Open full size
1940 US Federal Census — Madison-County, Tennessee
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03918-00706)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Sylvesta B. Spaw | 12 | Daughter | — | Tennessee |
| 42 | Frank Spaw | 10 | Son | — | Tennessee |
| 43 | Francis Spaw | 10 | Daughter | — | Tennessee |
| 44 | James H. Spaw | 7 | Son | — | Tennessee |
| 45 | Vera D. Spaw | 5 | Daughter | — | Tennessee |
| 46 | Robert J. Spaw | 4 | Son | — | Tennessee |
| 47 | Ira L. Spaw | 2 | Son | — | Tennessee |
| 48 | Bruce Williams | 40 | Head | Truck Driver | Tennessee |
| 49 | Robie L. Williams | 29 | Wife | — | Tennessee |
| 50 | Joyce Ann Williams | 12 | Daughter | — | Tennessee |
| 51 | Hubert Mercer | 33 | Head | Laborer | Tennessee |
| 52 | Jessie Mercer | 28 | Wife | Laundress | Tennessee |
| 53 | Raymond Mercer | 7 | Son | — | Tennessee |
| 54 | Fredrick Mercer | 5 | Son | — | Tennessee |
| 55 | Ginger A. Mercer | 3 | Daughter | — | Tennessee |
| 56 | Daphne N. Mercer | 1 | Daughter | — | Tennessee |
| 57 | Mattie Davis | 72 | Mother in law | — | Tennessee |
| 58 | Anna Davis | 42 | Sister in law | — | Tennessee |
| 59 | John L. Savage | 65 | Head | Stock Feeder | Tennessee |
| 60 | Arndia Curry | 32 | Daughter | Laundress | Tennessee |
| 61 | Voria G. Rhodes | 20 | Daughter | — | Tennessee |
| 62 | Ivy Butler | 38 | Head | Truck Driver | Tennessee |
| 63 | Judy M. Butler | 29 | Wife | Housekeeper | Tennessee |
| 64 | George M. Swink | 37 | Head | Brick Maker | Tennessee |
| 65 | Pearlie Swink | 39 | Wife | Cook | Tennessee |
| 66 | James E. Spencer | 21 | Step son | New Worker | Tennessee |
| 67 | Henry Weddle | 61 | Head | Laborer | Tennessee |
| 68 | Rosa A. Weddle | 58 | Wife | — | Tennessee |
| 69 | Fred D. Winston | 39 | Head | Truck Driver | Tennessee |
| 70 | Florence Winston | 40 | Wife | — | Tennessee |
| 71 | George B. Moore | 50 | Head | Fireman | Mississippi |
| 72 | Olivia Moore | 48 | Wife | — | Tennessee |
| 73 | Eldrich Moore | 5 | Son | — | Tennessee |
| 74 | Christopher Moore | 3 | Son | — | Tennessee |
| 75 | Mack H. Tyner | 19 | Step son | Caretaker | Tennessee |
| 76 | Earnest L. Gale | 39 | Head | Laborer | Tennessee |
| 77 | Flora A. Gale | 31 | Wife | — | Mississippi |
| 78 | John E. Cobb THIS PERSON | 23 | Head | Laborer | Tennessee |
| 79 | Earnestine Cobb | 20 | Wife | — | Tennessee |
| 80 | Charles L. Cobb | 2 | Son | — | Tennessee |
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 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)