JB
John Buchanan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Obion-County, Tennessee
Our Model Tree links this John Buchanan across the 1920, 1930 and 1940 US Censuses in Obion-County, Tennessee (XGBoost, ~Confirmed), with identified parents Bonie & Annie — first a head (b.~1904), then head of a 7-person household.
Age 36
b. ~1904
Male
Head
Born: Tennessee
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Obion-County, Tennessee |
| Surname | Buchanan |
| Given Name | John B. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Tennessee |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Obion |
| Additional Details | |
| Occupation | Farm Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 360 |
| Highest Grade | H-4 |
| 1935 Residence | Tennessee |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
| Occupation | Farm Laborer |
| Township / Ward | Civil District 6 |
| Est. Birth Year | ~1904 |
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 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Buchanan | Son | — | 13 | ~1927 |
| John Buchanan | Head | — | 36 | ~1904 |
| Leroy Buchanan | Son | — | 11 | ~1929 |
| Francis Buchanan | Daughter | — | 6 | ~1934 |
| Edward Buchanan | Son | — | 12 | ~1928 |
| Betty Buchanan | Daughter | — | 9 | ~1931 |
| Frankie Buchanan | Spouse | — | 42 | ~1898 |
Census Appearances
1920
Obion, Tennessee
Son, age 16
Obion, Tennessee · implied b. ~1904 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Buchanan |
| Given Name | John Augustus |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Tennessee |
| Father's Birthplace | Tennessee |
| Mother's Birthplace | Tennessee |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
1930
Obion, Tennessee
Other, age 27
Obion, Tennessee · implied b. ~1903 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Buchanan |
| Given Name | John B. |
| Relationship to Head | O |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Tennessee |
| Age at First Marriage | 22 |
| Father's Birthplace | Tennessee |
| Mother's Birthplace | Tennessee |
| Occupation | Farmer |
| Industry | Own farm |
| Class of Worker | O |
| Can Read/Write | Yes |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
1940
Obion-County, Tennessee
Head, age 36
Obion-County, Tennessee · implied b. ~1904 — 7 household members
| Surname | Buchanan |
| Given Name | John B. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Tennessee |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Obion |
| Occupation | Farm Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 360 |
| Highest Grade | H-4 |
| 1935 Residence | Tennessee |
| 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 Buchanan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Bonie Buchanan (~0.92 confidence) and mother Annie Buchanan (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Bonie Buchanan
b. ~1877
Source father
● Household
· direct · ~0.92
Mother
Annie Buchanan
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Buchanan
Head · 1940 · age 36 · b. ~1904 · 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 — Obion-County, Tennessee
Open full size
1940 US Federal Census — Obion-County, Tennessee
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03925-00211)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John B. Buchanan THIS PERSON | 36 | Head | Farm Laborer | Tennessee |
| 42 | Frankie Buchanan | 42 | Wife | — | Tennessee |
| 43 | John Jr. Buchanan | 13 | Son | — | Missouri |
| 44 | Edward Buchanan | 12 | Son | — | Tennessee |
| 45 | Leroy Buchanan | 11 | Son | — | Tennessee |
| 46 | Betty May Buchanan | 9 | Daughter | — | Tennessee |
| 47 | Francis Buchanan | 6 | Daughter | — | Tennessee |
| 48 | Lizzie Buchanan | 54 | Head | — | Tennessee |
| 49 | Theodore Melton | 26 | Head | Farm Laborer | Tennessee |
| 50 | Ethlene Melton | 27 | Wife | — | Tennessee |
| 51 | William Melton | 2 | Son | 0 | Tennessee |
| 52 | David Armstrong | 9 | Step-son | — | Tennessee |
| 53 | Sam Williams | 59 | Head | Farm Laborer | Tennessee |
| 54 | Mary Williams | 61 | Wife | — | Tennessee |
| 55 | Louise Williams | 13 | Daughter | — | Tennessee |
| 56 | W. F. Miller | 50 | Head | Section Foreman | Tennessee |
| 57 | Eula Miller | 49 | Wife | — | Tennessee |
| 58 | Pearl Miller | 23 | Daughter | Post Mistress | Tennessee |
| 59 | Bessie Miller | 21 | Daughter | — | Tennessee |
| 60 | W. F. Jr. Miller | 19 | Son | Farm Laborer | Tennessee |
| 61 | Billy Joe Miller | 10 | Son | — | Tennessee |
| 62 | Willie Darnell | 53 | Head | Operator | Tennessee |
| 63 | Rosella Darnell | 46 | Wife | — | Tennessee |
| 64 | D. C. Gibson | 74 | Head | — | Tennessee |
| 65 | G. E. Younger | 50 | Head | Farm Laborer | Tennessee |
| 66 | Clara Younger | 45 | Wife | — | Tennessee |
| 67 | Doris Younger | 20 | Son | Farm Laborer | Tennessee |
| 68 | Sara Younger | 16 | Daughter | — | Tennessee |
| 69 | James Younger | 14 | Son | — | Tennessee |
| 70 | William Younger | 11 | Son | — | Tennessee |
| 71 | Betty Younger | 9 | Daughter | — | Tennessee |
| 72 | Peggy Younger | 2 | Daughter | 0 | Tennessee |
| 73 | Walter Parks | 73 | Head | — | Tennessee |
| 74 | Tom Parks | 70 | Brother | — | Tennessee |
| 75 | G. B. Parks | 68 | Brother | — | Tennessee |
| 76 | Lizzy Scarce | 78 | Sister | — | Tennessee |
| 77 | Clifford Younger | 24 | Head | Section Hand | Tennessee |
| 78 | Lessie Younger | 23 | Wife | — | Tennessee |
| 79 | Gerald Younger | 2 | Son | 0 | Tennessee |
| 80 | Jessie Mcfalls | 56 | Head | Section Hand | Tennessee |
Pedigree Summary
John
Gen 1 · 2 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)