JC
John Cobb — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Buckingham-County, Virginia
Our Model Tree links this John Cobb across the 1930 and 1940 US Censuses in Buckingham-County, Virginia (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 8-person household.
Age 11
b. ~1929
Male
Son
Born: Virginia
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Buckingham-County, Virginia |
| Surname | Cobb |
| Given Name | John H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Virginia |
| 1935 Residence (City) | Magisterial Dist. No. 4 |
| 1935 Residence (County) | Botetourt |
| Additional Details | |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
| Township / Ward | Magisterial Dist No 4 |
| Est. Birth Year | ~1929 |
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 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Lafayette Cobb | Son | — | 2 | ~1938 |
| Virginia Cobb | Daughter | — | 12 | ~1928 |
| Pauleen Cobb | Daughter | — | 4 | ~1936 |
| Beulah Cobb | Spouse | — | 23 | ~1917 |
| Richard Cobb | Son | — | 8 | ~1932 |
| Hattie Cobb | Daughter | — | 6 | ~1934 |
| King Cobb | Head | — | 25 | ~1915 |
| John Cobb | Son | — | 11 | ~1929 |
Census Appearances
1930
Buckingham, Virginia
Son, age 1
Buckingham, Virginia · implied b. ~1929 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cobb |
| Given Name | John H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Virginia |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
1940
Buckingham-County, Virginia
Son, age 11
Buckingham-County, Virginia · implied b. ~1929 — 8 household members
| Surname | Cobb |
| Given Name | John H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Virginia |
| 1935 Residence (City) | Magisterial Dist. No. 4 |
| 1935 Residence (County) | Botetourt |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
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 11 · b. ~1929 · Virginia
★ You are viewing this record
Sibling
Richard Cobb
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lafayette Cobb
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Pauleen Cobb
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Virginia Cobb
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hattie Cobb
Sibling · 1940 · age 6
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 — Buckingham-County, Virginia
Open full size
1940 US Federal Census — Buckingham-County, Virginia
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04252-00309)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Bert A. Jones | 27 | Wife | Teacher | Virginia |
| 2 | King E. Cobb | 25 | Head | Laborer | Virginia |
| 3 | Beulah D. Cobb | 23 | Wife | — | Virginia |
| 4 | Virginia C. Cobb | 12 | Daughter | — | Virginia |
| 5 | John H. Cobb THIS PERSON | 11 | Son | — | Virginia |
| 6 | Richard E. Cobb | 8 | Son | — | Virginia |
| 7 | Hattie E. Cobb | 6 | Daughter | — | Virginia |
| 8 | Pauleen H. Cobb | 4 | Daughter | — | Virginia |
| 9 | Lafayette E. Cobb | 2 | Son | — | Virginia |
| 10 | Charles E. Davidson | 31 | Head | Doctor | Virginia |
| 11 | Mary W. Davidson | 21 | Wife | — | Virginia |
| 12 | Charles E. Jr. Davidson | 2 | Son | — | Virginia |
| 13 | Annie M. Davidson | 0 | Daughter | — | Virginia |
| 14 | Janet M. Davidson | 5 | Daughter | — | Virginia |
| 15 | Willie Millian | 40 | Nephew | Laborer | Virginia |
| 16 | Curtis D. Peters | 25 | Head | Farmer | Virginia |
| 17 | Marie S. Peters | 20 | Wife | — | Virginia |
| 18 | Mary E. Peters | 2 | Daughter | — | Virginia |
| 19 | Edith D. Peters | 0 | Daughter | — | Virginia |
| 20 | Gary W. Peters | 0 | Son | — | Virginia |
| 21 | John E. Peters | 25 | Daughter | — | Virginia |
| 22 | Mildred L. Peters | 14 | Daughter | — | Virginia |
| 23 | Calvin H. Peters | 12 | Son | — | Virginia |
| 24 | Sidney D. Peters | 10 | Son | — | Virginia |
| 25 | Charles C. Peters | 7 | Son | — | Virginia |
| 26 | Barbara A. Peters | 5 | Daughter | — | Virginia |
| 27 | Dan Wright | 62 | Head | Farmer | Virginia |
| 28 | Louise A. Wright | 57 | Wife | — | Virginia |
| 29 | William Johnson | 17 | Nephew | Laborer | Virginia |
| 30 | Robert Booker | 24 | Son | — | Virginia |
| 31 | Burley A. Gray | 29 | Head | Laborer | Virginia |
| 32 | Lucian A. Gray | 25 | Wife | — | Virginia |
| 33 | Sallie E. Gray | 7 | Daughter | — | Virginia |
| 34 | Lula W. Goolsby | 62 | Head | Farmer | Virginia |
| 35 | Ella Wood | 30 | Head | Cooking | Virginia |
| 36 | Sarah Wood | 2 | Daughter | Laborer | Virginia |
| 37 | Richard B. Ellis | 70 | Head | — | Virginia |
| 38 | Richard B. Ellis | 25 | Son | Filling Station | Virginia |
| 39 | Sarah E. Ellis | 34 | Daughter | — | Virginia |
| 40 | John E. Ellis | 10 | Son | — | Virginia |
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)