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James Cobb — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Madison-County, Alabama
Our Model Tree links this James Cobb across the 1930 and 1940 US Censuses in Madison-County, Alabama (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 9-person household.
Age 12
b. ~1928
Male
Son
Born: Alabama
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Madison-County, Alabama |
| Surname | Cobb |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Alabama |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Limestone |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Alabama |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
| Township / Ward | E Precinct 9 Harvest Ward |
| Est. Birth Year | ~1928 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Willie Cobb | Daughter | — | 13 | ~1927 |
| Clara Cobb | Daughter | — | 18 | ~1922 |
| Bluford Cobb | Head | — | 50 | ~1890 |
| Maggie Cobb | Spouse | — | 42 | ~1898 |
| Lena Cobb | Daughter | — | 21 | ~1919 |
| Robert Cobb | Son | — | 16 | ~1924 |
| William Cobb | Son | — | 10 | ~1930 |
| Charles Cobb | Son | — | 8 | ~1932 |
| James Cobb | Son | — | 12 | ~1928 |
Census Appearances
1930
Madison, Alabama
Son, age 2
Madison, Alabama · implied b. ~1928 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cobb |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1940
Madison-County, Alabama
Son, age 12
Madison-County, Alabama · implied b. ~1928 — 9 household members
| Surname | Cobb |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Alabama |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Limestone |
| Highest Grade | No 4 |
| 1935 Residence | Alabama |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
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 James Cobb across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Cobb
Son · 1940 · age 12 · b. ~1928 · Alabama
★ You are viewing this record
Sibling
Lena Cobb
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clara Cobb
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Cobb
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Cobb
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Willie Cobb
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Cobb
Sibling · 1940 · age 10
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 — Madison-County, Alabama
Open full size
1940 US Federal Census — Madison-County, Alabama
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00057-00056)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William O Sublett | 37 | Head | Operator | Alabama |
| 42 | Henga E Sublett | 33 | Wife | — | Alabama |
| 43 | William E Sublett | 15 | Son | — | Alabama |
| 44 | Doris J Sublett | 13 | Daughter | — | Alabama |
| 45 | Robert W Sublett | 11 | Son | — | Alabama |
| 46 | Kenneth L Sublett | 9 | Son | — | Alabama |
| 47 | Harold D Sublett | 5 | Son | — | Alabama |
| 48 | Amy J Sublett | 2 | Daughter | — | Alabama |
| 49 | Bluford Cobb | 50 | Head | Labour | Alabama |
| 50 | Maggie B Cobb | 42 | Wife | — | Tennessee |
| 51 | Lena May Cobb | 21 | Daughter | Labour | Alabama |
| 52 | Clara Cobb | 18 | Daughter | Labour | Alabama |
| 53 | Robert Cobb | 16 | Son | — | Alabama |
| 54 | Willie Cobb | 13 | Daughter | — | Alabama |
| 55 | James Cobb THIS PERSON | 12 | Son | — | Alabama |
| 56 | William Cobb | 10 | Son | — | Alabama |
| 57 | Charles Cobb | 8 | Son | — | Alabama |
| 58 | James O Boyett | 32 | Head | Farmer | Alabama |
| 59 | Essie Boyett | 34 | Wife | — | Georgia |
| 60 | James Jr Boyett | 13 | Son | Truck Driver | Alabama |
| 61 | Thelma Boyett | 16 | Daughter | — | Alabama |
| 62 | William S Boyett | 12 | Son | — | Alabama |
| 63 | Annie R Boyett | 10 | Daughter | — | Alabama |
| 64 | Helen Boyett | 7 | Daughter | — | Alabama |
| 65 | Franklin D Boyett | 3 | Son | — | Alabama |
| 66 | Francis Boyett | 3 | Daughter | — | Alabama |
| 67 | Nancy Sister Boyett | None | F | Labour | — |
| 68 | Babe B Carter | 27 | Head | Farmer | Alabama |
| 69 | Jessie F Carter | 25 | Wife | — | Alabama |
| 70 | Loyd Carter | 26 | Head | Labour | Alabama |
| 71 | Deloris Carter | 21 | Wife | — | Alabama |
| 72 | Little Robert Robert | 27 | Head | Farmer | Alabama |
| 73 | Pauline Robert | 27 | Wife | — | Alabama |
| 74 | Robert Jr Robert | 7 | Son | — | Alabama |
| 75 | Addie D Robert | 5 | Daughter | — | Alabama |
| 76 | Mary C Robert | 4 | Daughter | — | Alabama |
| 77 | John E Hatchill | 2 | Son | — | Alabama |
| 78 | James Hatchill | 17 | Hired Hand | Labour | Alabama |
| 79 | Leonard Vinson | 26 | Head | Labour | Alabama |
| 80 | Jennie S Vinson | 21 | Wife | — | Texas |
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)