MC
Mary Caldwell — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Campbell-County, Virginia
Our Model Tree links this Mary Caldwell across the 1920, 1930 and 1940 US Censuses in Campbell-County, Virginia (XGBoost, ~Confirmed) — first a spouse (b.~1897), then head of a 6-person household.
Age 43
b. ~1897
Female
Spouse
Born: Virginia
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Campbell-County, Virginia |
| Surname | Caldwell |
| Given Name | Mary H. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Virginia |
| 1935 Residence (City) | Rustburg District |
| 1935 Residence (County) | Campbell |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
| Township / Ward | Rustburg District |
| Est. Birth Year | ~1897 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Eliza Caldwell | Daughter | — | 13 | ~1927 |
| H Caldwell | Head | — | 50 | ~1890 |
| M Caldwell | Son | — | 12 | ~1928 |
| William Caldwell | Son | — | 17 | ~1923 |
| Stephen Caldwell | Son | — | 15 | ~1925 |
| Mary Caldwell | Spouse | — | 43 | ~1897 |
Census Appearances
1920
Campbell, Virginia
Spouse, age 21
Campbell, Virginia · implied b. ~1899 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Caldwell |
| Given Name | Mamie E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Married |
| Birthplace | Virginia |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Occupation | Farmer |
| Industry | Gen. Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
1930
Campbell, Virginia
Spouse, age 32
Campbell, Virginia · implied b. ~1898 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Caldwell |
| Given Name | Mamie E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Virginia |
| Age at First Marriage | 21 |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Can Read/Write | Yes |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
1940
Campbell-County, Virginia
Spouse, age 43
Campbell-County, Virginia · implied b. ~1897 — 6 household members
| Surname | Caldwell |
| Given Name | Mary H. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Virginia |
| 1935 Residence (City) | Rustburg District |
| 1935 Residence (County) | Campbell |
| Class of Worker | 0 |
| Highest Grade | No 7 |
| 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 Caldwell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Caldwell
Spouse · 1940 · age 43 · b. ~1897 · Virginia
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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 — Campbell-County, Virginia
Open full size
1940 US Federal Census — Campbell-County, Virginia
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04252-00948)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William H. Moore | 17 | Son | Farm Helper | Virginia |
| 42 | Clayton F. Moore | 16 | Son | Farm Helper | Virginia |
| 43 | Layton H. Moore | 5 | Son | — | Virginia |
| 44 | Aubrey M. Moore | 4 | Son | — | Virginia |
| 45 | George W. Mooney | 62 | Head | Farm Operator | Virginia |
| 46 | Annie H. Mooney | 61 | Wife | — | Virginia |
| 47 | Leonard C. Mooney | 42 | Son | Farm Helper | Virginia |
| 48 | Samuel P. Mooney | 65 | Brother | Farm Helper | Virginia |
| 49 | H. Rayford Tweedy | 44 | Head | Farmer | Virginia |
| 50 | Carrie L. Tweedy | 30 | Wife | — | Virginia |
| 51 | Carrol E. Tweedy | 14 | Daughter | — | Virginia |
| 52 | Audrey H. Tweedy | 12 | Daughter | — | Virginia |
| 53 | H. Rayford Jr. Tweedy | 4 | Son | — | Virginia |
| 54 | Mary M. Tweedy | 1 | Daughter | — | Virginia |
| 55 | David B. Tweedy | 29 | Head | Farmer | Virginia |
| 56 | Emma L. Tweedy | 23 | Wife | — | Virginia |
| 57 | Ronald D. Tweedy | 4 | Son | — | Virginia |
| 58 | Benjamin H. Tweedy | 78 | Father | — | Virginia |
| 59 | Evans B. Tweedy | 34 | Brother | — | Virginia |
| 60 | Thomas J. Martin | 35 | Head | Farmer | Virginia |
| 61 | Edmonia Grigely | 80 | Mother | — | Virginia |
| 62 | George F. Martin | 26 | Nephew | Farm Operator | Virginia |
| 63 | Dora Martin | 20 | Sister-in-law | — | Virginia |
| 64 | Estelle Martin | 4 | Niece | — | Virginia |
| 65 | George Jr. Martin | 3 | Nephew | — | Virginia |
| 66 | Calvin Martin | 2 | Great-nephew | — | Virginia |
| 67 | Lorena Martin | 1 | Great-niece | — | Virginia |
| 68 | S. Arthur Caldwell | 46 | Head | Farmer | Virginia |
| 69 | Eunice M. Caldwell | 42 | Wife | — | Virginia |
| 70 | Samuel F. Caldwell | 18 | Son | Farm Helper | Virginia |
| 71 | Elva L. Caldwell | 17 | Daughter | — | Virginia |
| 72 | Lyle O. Caldwell | 16 | Son | Farm Helper | Virginia |
| 73 | Christine M. Caldwell | 13 | Daughter | — | Virginia |
| 74 | Margaret H. Caldwell | 11 | Daughter | — | Virginia |
| 75 | H. Hunter Caldwell | 50 | Head | Farmer | Virginia |
| 76 | Mary H. Caldwell THIS PERSON | 43 | Wife | — | Virginia |
| 77 | William H. Caldwell | 17 | Son | — | Virginia |
| 78 | Stephen H. Caldwell | 15 | Son | — | Virginia |
| 79 | Eliza Marie Caldwell | 13 | Daughter | — | Virginia |
| 80 | M. Luther Caldwell | 12 | Son | — | 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)