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Mary Buchanan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Smyth-County, Virginia
Our Model Tree links this Mary Buchanan across the 1930 and 1940 US Censuses in Smyth-County, Virginia (XGBoost, ~Confirmed) — first a daughter (b.~1919), then head of a 8-person household.
Age 21
b. ~1919
Female
Daughter
Born: Virginia
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Smyth-County, Virginia |
| Surname | Buchanan |
| Given Name | Mary G. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Virginia |
| 1935 Residence (City) | Lyon Gap Road |
| 1935 Residence (County) | Smyth |
| Additional Details | |
| Occupation | New worker |
| Class of Worker | 0 |
| Hours Worked | 36 |
| Highest Grade | C 4 |
| 1935 Residence | Same house |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
| Occupation | New Worker |
| Township / Ward | Lyon Gap Road |
| Est. Birth Year | ~1919 |
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 |
|---|---|---|---|---|
| Louise Buchanan | Daughter | — | 19 | ~1921 |
| George Buchanan | Son | — | 16 | ~1924 |
| Florence Buchanan | Daughter | — | 26 | ~1914 |
| Wilson Buchanan | Son | — | 23 | ~1917 |
| Debra Buchanan | Daughter | — | 11 | ~1929 |
| Hattie Buchanan | Spouse | — | 54 | ~1886 |
| Rufus Buchanan | Head | — | 57 | ~1883 |
| Mary Buchanan | Daughter | — | 21 | ~1919 |
Census Appearances
1930
Smyth, Virginia
Daughter, age 11
Smyth, Virginia · implied b. ~1919 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Buchanan |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Virginia |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Virginia |
| Can Read/Write | Yes |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
1940
Smyth-County, Virginia
Daughter, age 21
Smyth-County, Virginia · implied b. ~1919 — 8 household members
| Surname | Buchanan |
| Given Name | Mary G. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Virginia |
| 1935 Residence (City) | Lyon Gap Road |
| 1935 Residence (County) | Smyth |
| Occupation | New worker |
| Class of Worker | 0 |
| Hours Worked | 36 |
| Highest Grade | C 4 |
| 1935 Residence | Same house |
| 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 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 21 · b. ~1919 · Virginia
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Sibling
Debra Buchanan
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Florence Buchanan
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Buchanan
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Louise Buchanan
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Wilson Buchanan
Sibling · 1940 · age 23
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 — Smyth-County, Virginia
Open full size
1940 US Federal Census — Smyth-County, Virginia
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04295-00277)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Joe Jones | 6 | Son | — | Virginia |
| 42 | Theodore R. Thomas | 37 | Head | Laborer | Virginia |
| 43 | India Thomas | 48 | Wife | — | Virginia |
| 44 | Elizabeth M. Thomas | 13 | Daughter | — | Virginia |
| 45 | Mattie Alice Thomas | 23 | Daughter | Inspector | Virginia |
| 46 | Nathaniel W. Jones | 87 | Father-in-law | — | Virginia |
| 47 | James Mccloud | 42 | Head | Farmer | Virginia |
| 48 | Zadie Mccloud | 44 | Wife | — | Virginia |
| 49 | Gladys Mccloud | 17 | Daughter | — | Virginia |
| 50 | Elizabeth Mccloud | 16 | Daughter | — | Virginia |
| 51 | Sanders Mccloud | 12 | Son | — | Virginia |
| 52 | Albert Mccloud | 7 | Son | — | Virginia |
| 53 | Rufus W. Buchanan | 57 | Head | Farmer | Virginia |
| 54 | Hattie F. Buchanan | 54 | Wife | — | Virginia |
| 55 | Florence Buchanan | 26 | Daughter | — | Virginia |
| 56 | Wilson R. Buchanan | 23 | Son | Farmer | Virginia |
| 57 | Mary G. Buchanan THIS PERSON | 21 | Daughter | New Worker | Virginia |
| 58 | Louise J. Buchanan | 19 | Daughter | — | Virginia |
| 59 | George W. Buchanan | 16 | Son | — | Virginia |
| 60 | Debra S. Buchanan | 11 | Daughter | — | Virginia |
| 61 | Will H. Eller | 73 | Head | Labourer | Virginia |
| 62 | Lilly Eller | 46 | Wife | — | Virginia |
| 63 | Ewell Berry | 30 | Head | Labourer | Virginia |
| 64 | Velma Berry | 22 | Wife | — | Virginia |
| 65 | John W. Berry | 4 | Son | — | Virginia |
| 66 | Betty Berry | 1 | Daughter | — | Virginia |
| 67 | Herman Keith | 22 | Head | Labourer | Virginia |
| 68 | Madeline Keith | 21 | Wife | — | Virginia |
| 69 | Clark Childress | 53 | Head | Labourer | Virginia |
| 70 | Ethel Childress | 41 | Wife | — | Virginia |
| 71 | Charles Childress | 17 | Son | New Worker | Virginia |
| 72 | Mack Childress | 13 | Son | — | Virginia |
| 73 | Carmit Childress | 9 | Son | — | Virginia |
| 74 | Betty Childress | 7 | Daughter | — | Virginia |
| 75 | James Yancy | 30 | Head | Mines | Tennessee |
| 76 | Hanner Yancy | 21 | Wife | — | Virginia |
| 77 | Curmet Yancy | 26 | Brother-in-law | Mines | Tennessee |
| 78 | Dave Thomas | 32 | Head | Labourer | Virginia |
| 79 | Louise Thomas | 30 | Wife | — | Virginia |
| 80 | Helen Thomas | 11 | Daughter | — | 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)