MD
Mary Davidson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Smyth-County, Virginia
Our Model Tree links this Mary Davidson across the 1930 and 1940 US Censuses in Smyth-County, Virginia (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 8-person household.
Age 11
b. ~1929
Female
Daughter
Born: Virginia
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Smyth-County, Virginia |
| Surname | Davidson |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Virginia |
| 1935 Residence (City) | Rich Valley |
| 1935 Residence (County) | Smyth |
| Additional Details | |
| Highest Grade | 5 |
| 1935 Residence | Same place |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
| Township / Ward | Rich Valley |
| 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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Arlene Davidson | Daughter | — | 9 | ~1931 |
| Mary Davidson | Daughter | — | 11 | ~1929 |
| Hugh Davidson | Head | — | 51 | ~1889 |
| James Davidson | Son | — | 21 | ~1919 |
| Henry Davidson | Son | — | 7 | ~1933 |
| William Davidson | Son | — | 3 | ~1937 |
| Fred Davidson | Son | — | 14 | ~1926 |
| Elizabeth Davidson | Spouse | — | 48 | ~1892 |
Census Appearances
1930
Smyth, Virginia
Daughter, age
Smyth, Virginia · implied b. ~1930 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davidson |
| Given Name | Margaret Ann |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Virginia |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Occupation | none |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
1940
Smyth-County, Virginia
Daughter, age 11
Smyth-County, Virginia · implied b. ~1929 — 8 household members
| Surname | Davidson |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Virginia |
| 1935 Residence (City) | Rich Valley |
| 1935 Residence (County) | Smyth |
| Highest Grade | 5 |
| 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 Mary Davidson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Davidson
Daughter · 1940 · age 11 · b. ~1929 · Virginia
★ You are viewing this record
Sibling
William Davidson
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Henry Davidson
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Fred Davidson
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arlene Davidson
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Davidson
Sibling · 1940 · age 21
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-t0627-04295-00501)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Cooley Hudson | 27 | Son-in-law | Laborer | Virginia |
| 42 | Mattie Hudson | 20 | Daughter | — | Virginia |
| 43 | Patsy Hudson | 4 | Granddaughter | — | Virginia |
| 44 | Earline Hudson | 2 | Granddaughter | — | Virginia |
| 45 | Cooley Jr Hudson | 0 | Grandson | — | Virginia |
| 46 | Stanley L Call | 44 | Head | — | Virginia |
| 47 | Bertha D Call | 34 | Wife | — | Virginia |
| 48 | Marion Call | 12 | Son | — | Virginia |
| 49 | Charles Call | 11 | Son | — | Virginia |
| 50 | Mary Call | 9 | Daughter | — | Virginia |
| 51 | Douglas Call | 7 | Son | — | Virginia |
| 52 | James Call | 3 | Son | — | Virginia |
| 53 | Mary Call | 71 | Mother | — | Virginia |
| 54 | Hugh M Davidson | 51 | Head | Farmer | Virginia |
| 55 | Elizabeth Davidson | 48 | Wife | — | Virginia |
| 56 | James Davidson | 21 | Son | Farmer | Virginia |
| 57 | Fred Davidson | 14 | Son | Farmer | Virginia |
| 58 | Mary Davidson THIS PERSON | 11 | Daughter | — | Virginia |
| 59 | Arlene Davidson | 9 | Daughter | — | Virginia |
| 60 | Henry Davidson | 7 | Son | — | Virginia |
| 61 | William Davidson | 3 | Son | — | Virginia |
| 62 | Robert G Davidson | 24 | Head | Laborer | Virginia |
| 63 | Flora D Davidson | 28 | Wife | — | Virginia |
| 64 | Roland Davidson | 5 | Son | — | Virginia |
| 65 | Robert Davidson | 2 | Son | — | Virginia |
| 66 | Shirley Davidson | 0 | Daughter | — | Virginia |
| 67 | John E Wyrick | 34 | Head | Laborer | Virginia |
| 68 | Carrie D Wyrick | 54 | Mother | — | Virginia |
| 69 | Eliza Davidson | 85 | Mother | — | Virginia |
| 70 | Paul D Doane | 66 | Head | — | Virginia |
| 71 | Gladys Doane | 46 | Wife | — | Virginia |
| 72 | Pallas Doane | 4 | Son | — | Virginia |
| 73 | Earl Thompson | 24 | Son | — | Virginia |
| 74 | Harry Thompson | 19 | Son | Laborer | Virginia |
| 75 | Norwood D Holmes | 28 | Head | Laborer | Virginia |
| 76 | Nathan Holmes | 69 | Father | — | Virginia |
| 77 | Ronzy Poone | 41 | Head | Laborer | Virginia |
| 78 | Rebecca D Poone | 43 | Wife | — | Virginia |
| 79 | Ernest Poone | 17 | Son | New Worker | Virginia |
| 80 | Albert Poone | 16 | Son | New Worker | Virginia |
Related Census Records
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)