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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 spouse (b.~1910), then head of a 7-person household.
Age 30
b. ~1910
Female
Spouse
Born: Tennessee
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Humphreys-County, Tennessee |
| Surname | Buchanan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Tennessee |
| 1935 Residence (City) | Civil District No. 5 |
| 1935 Residence (County) | Humphreys |
| Additional Details | |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
| Township / Ward | Civil District No 5 |
| Est. Birth Year | ~1910 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| John Buchanan | Son | — | 8 | ~1932 |
| Lara Buchanan | Daughter | — | 10 | ~1930 |
| Mary Buchanan | Spouse | — | 30 | ~1910 |
| Johnnie Buchanan | Head | — | 31 | ~1909 |
| William Buchanan | Son | — | 1 | ~1939 |
| Hardie Buchanan | Son | — | 5 | ~1935 |
| Margueret Buchanan | Daughter | — | 2 | ~1938 |
Census Appearances
1930
Humphreys, Tennessee
Spouse, age 20
Humphreys, Tennessee · implied b. ~1910 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Buchanan |
| Given Name | Mary L. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Married |
| Birthplace | Tennessee |
| Age at First Marriage | 19 |
| Father's Birthplace | Tennessee |
| Mother's Birthplace | Tennessee |
| Can Read/Write | Yes |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
1940
Humphreys-County, Tennessee
Spouse, age 30
Humphreys-County, Tennessee · implied b. ~1910 — 7 household members
| Surname | Buchanan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Tennessee |
| 1935 Residence (City) | Civil District No. 5 |
| 1935 Residence (County) | Humphreys |
| Highest Grade | No 7 |
| 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.
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This person
Anchor record
Mary Buchanan
Spouse · 1940 · age 30 · b. ~1910 · Tennessee
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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-t0627-03907-00512)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William H. Jr. Bullard | 51 | Head | Carpenter Helper | Tennessee |
| 2 | Lillian Bullard | 40 | Wife | — | Tennessee |
| 3 | Frances Bullard | 21 | Daughter | New Worker | Tennessee |
| 4 | Catherine Bullard | 20 | Daughter | — | Tennessee |
| 5 | Ford Bullard | 15 | Son | — | Tennessee |
| 6 | Elizabeth Bullard | 11 | Daughter | — | Tennessee |
| 7 | Woody Jr. Dreaden | 27 | Head | Laborer | Tennessee |
| 8 | Thelma Dreaden | 23 | Wife | — | Tennessee |
| 9 | Doris Dreaden | 5 | Daughter | — | Tennessee |
| 10 | Shirley Dreaden | 3 | Daughter | — | Tennessee |
| 11 | Wayna Dreaden | 2 | Daughter | — | Tennessee |
| 12 | Earl Dreaden | 30 | Head | Farming | Tennessee |
| 13 | Authie Dreaden | 25 | Wife | — | Tennessee |
| 14 | June Dreaden | 4 | Daughter | — | Tennessee |
| 15 | Reba Dreaden | 2 | Daughter | — | Tennessee |
| 16 | Lilly Dreaden | 65 | Aunt | — | Tennessee |
| 17 | Hubert Curtis | 31 | Head | Laborer | Tennessee |
| 18 | Daisy Curtis | 28 | Wife | — | Tennessee |
| 19 | John D. Curtis | 7 | Son | — | Tennessee |
| 20 | Hubert Maurice Curtis | 3 | Son | — | Tennessee |
| 21 | Johnnie A. Buchanan | 31 | Head | Laborer | Tennessee |
| 22 | Mary Buchanan THIS PERSON | 30 | Wife | — | Tennessee |
| 23 | Lara Buchanan | 10 | Daughter | — | Tennessee |
| 24 | John A. Jr. Buchanan | 8 | Son | — | Tennessee |
| 25 | Hardie Buchanan | 5 | Son | — | Tennessee |
| 26 | Margueret Buchanan | 2 | Daughter | — | Tennessee |
| 27 | William Buchanan | 1 | Son | — | Tennessee |
| 28 | Roy Buchanan | 55 | Head | Farming | Tennessee |
| 29 | Lillie Buchanan | 56 | Wife | — | Tennessee |
| 30 | Myrtle Buchanan | 25 | Daughter | — | Tennessee |
| 31 | Charlie Buchanan | 23 | Son | Farm Labor | Tennessee |
| 32 | Elsie Buchanan | 20 | Daughter | — | Tennessee |
| 33 | Hazel Buchanan | 17 | Daughter | — | Tennessee |
| 34 | Robert Buchanan | 11 | Son | — | Tennessee |
| 35 | William M. Bell | 26 | Head | Farming | Tennessee |
| 36 | Eugenia Bell | 21 | Wife | — | Tennessee |
| 37 | Billie A. Bell | 3 | Son | — | Tennessee |
| 38 | Edward Story | 24 | Head | Museling | Tennessee |
| 39 | Lucile Story | 28 | Wife | — | Tennessee |
| 40 | Ruby Story | 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)