MB
Mary Buchanan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Humphreys-County, Tennessee
Our Model Tree links this Mary Buchanan across the 1930 and 1940 US Censuses in Humphreys-County, Tennessee (XGBoost, ~Confirmed) — first a daughter (b.~1923), then head of a 8-person household.
Age 17
b. ~1923
Female
Daughter
Born: Tennessee
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Humphreys-County, Tennessee |
| Surname | Buchanan |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Tennessee |
| 1935 Residence (City) | Civil District No. 5 |
| 1935 Residence (County) | Humphreys |
| Additional Details | |
| Occupation | N.Y.A. Secretary |
| Industry | High School |
| Class of Worker | GW |
| Income (1939) | 28 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
| Occupation | N.Y.A. Secretary |
| Township / Ward | Civil District No 5 |
| Est. Birth Year | ~1923 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Gwendoline Buchanan | Daughter | — | 10 | ~1930 |
| Mary Buchanan | Daughter | — | 17 | ~1923 |
| Annie Buchanan | Spouse | — | 39 | ~1901 |
| Carl Buchanan | Son | — | 12 | ~1928 |
| Reba Buchanan | Daughter | — | 14 | ~1926 |
| Earl Buchanan | Head | — | 39 | ~1901 |
| Jesse Buchanan | Son | — | 8 | ~1932 |
| Bettie Buchanan | Daughter | — | 5 | ~1935 |
Census Appearances
1930
Humphreys, Tennessee
Daughter, age 7
Humphreys, Tennessee · implied b. ~1923 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Buchanan |
| Given Name | Mary A |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Tennessee |
| Father's Birthplace | Tennessee |
| Mother's Birthplace | Tennessee |
| Can Read/Write | No |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
1940
Humphreys-County, Tennessee
Daughter, age 17
Humphreys-County, Tennessee · implied b. ~1923 — 8 household members
| Surname | Buchanan |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Tennessee |
| 1935 Residence (City) | Civil District No. 5 |
| 1935 Residence (County) | Humphreys |
| Occupation | N.Y.A. Secretary |
| Industry | High School |
| Class of Worker | GW |
| Income (1939) | 28 |
| Highest Grade | Hs 2 |
| 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 Mary Buchanan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Buchanan
Daughter · 1940 · age 17 · b. ~1923 · Tennessee
★ You are viewing this record
Sibling
Gwendoline Buchanan
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carl Buchanan
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jesse Buchanan
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Reba Buchanan
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bettie Buchanan
Sibling · 1940 · age 5
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 — Humphreys-County, Tennessee
Open full size
1940 US Federal Census — Humphreys-County, Tennessee
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03907-00514)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John H. Little | 69 | Head | Farmer | Tennessee |
| 2 | Catherine Little | 64 | Wife | — | Tennessee |
| 3 | Eddie C. Little | 45 | Head | Farmer | Tennessee |
| 4 | Beatrice Little | 43 | Wife | — | Tennessee |
| 5 | Mildred Little | 20 | Daughter | Librarian | Tennessee |
| 6 | Annie Little | 18 | Daughter | Home Ex | Tennessee |
| 7 | Eddie C. Jr. Little | 15 | Son | — | Tennessee |
| 8 | Cathleen Little | 13 | Daughter | — | Tennessee |
| 9 | H. G. Little | 11 | Son | — | Tennessee |
| 10 | Johnnie H. Little | 5 | Son | — | Tennessee |
| 11 | R. B. Little | 3 | Son | — | Tennessee |
| 12 | Earl S. Buchanan | 39 | Head | Foreman | Tennessee |
| 13 | Annie Buchanan | 39 | Wife | — | Tennessee |
| 14 | Mary Buchanan THIS PERSON | 17 | Daughter | N.Y.A. Secretary | Tennessee |
| 15 | Reba Buchanan | 14 | Daughter | — | Tennessee |
| 16 | Carl S. Jr. Buchanan | 12 | Son | — | Tennessee |
| 17 | Gwendoline Buchanan | 10 | Daughter | — | Tennessee |
| 18 | Jesse L. Buchanan | 8 | Son | — | Tennessee |
| 19 | Bettie Joe Buchanan | 5 | Daughter | — | Tennessee |
| 20 | Bethel A. Blackwell | 56 | Head | Renter | Tennessee |
| 21 | Cassie Blackwell | 53 | Wife | — | Tennessee |
| 22 | Lawrence Davis | 20 | Head | Laborer | Tennessee |
| 23 | Ellen Davis | 28 | Wife | — | Tennessee |
| 24 | David M. Merideth | 76 | Head | Farming | Tennessee |
| 25 | Donnie Mae Merideth | 66 | Wife | — | Tennessee |
| 26 | Jessie Mae Rushton | 12 | Grand daughter | — | Tennessee |
| 27 | Clara Merideth | 38 | Head | — | Tennessee |
| 28 | Elmer Merideth | 22 | Son | Renter | Tennessee |
| 29 | Joe Merideth | 4 | Son | — | Tennessee |
| 30 | Dorris A. Little | 55 | Head | Renter | Tennessee |
| 31 | Ellen Little | 51 | Wife | — | Tennessee |
| 32 | Joel Little | 22 | Son | Laborer | Tennessee |
| 33 | Silas Little | 19 | Son | Laborer | Tennessee |
| 34 | Ruth Little | 15 | Daughter | — | Tennessee |
| 35 | Ruby Little | 15 | Daughter | — | Tennessee |
| 36 | Buford Little | 12 | Son | — | Tennessee |
| 37 | Clint Parnell | 27 | Head | Musseling | Tennessee |
| 38 | Elsie Parnell | 15 | Wife | — | Tennessee |
| 39 | Clyde Parnell | 4 | Son | — | Tennessee |
| 40 | Peggy Parnell | 1 | Daughter | — | Tennessee |
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)