RC
Robert Caldwell — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Montgomery-County, Virginia
Our Model Tree links this Robert Caldwell across the 1930 and 1940 US Censuses in Montgomery-County, Virginia (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 10-person household.
Age 12
b. ~1928
Male
Son
Born: Virginia
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Montgomery-County, Virginia |
| Surname | Caldwell |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Virginia |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Montgomery |
| Additional Details | |
| Highest Grade | No 1 |
| 1935 Residence | Virginia |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
| Township / Ward | Blacksburg District |
| Est. Birth Year | ~1928 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Ivan Caldwell | Son | — | 3 | ~1937 |
| Stella Caldwell | Spouse | — | 29 | ~1911 |
| Rosie Caldwell | Son | — | ~1940 | |
| William Caldwell | Son | — | 14 | ~1926 |
| Ruby Caldwell | Daughter | — | 5 | ~1935 |
| Eldridge Caldwell | Head | — | 49 | ~1891 |
| Pauline Caldwell | Daughter | — | 2 | ~1938 |
| Harry Caldwell | Son | — | 10 | ~1930 |
| Herman Caldwell | Son | — | 7 | ~1933 |
| Robert Caldwell | Son | — | 12 | ~1928 |
Census Appearances
1930
Montgomery, Virginia
Son, age 1
Montgomery, Virginia · implied b. ~1929 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Caldwell |
| Given Name | Robert L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Virginia |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
1940
Montgomery-County, Virginia
Son, age 12
Montgomery-County, Virginia · implied b. ~1928 — 10 household members
| Surname | Caldwell |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Virginia |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Montgomery |
| Highest Grade | No 1 |
| 1935 Residence | Virginia |
| 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 Robert Caldwell across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Caldwell
Son · 1940 · age 12 · b. ~1928 · Virginia
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Sibling
Harry Caldwell
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Herman Caldwell
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Pauline Caldwell
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Caldwell
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruby Caldwell
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ivan Caldwell
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rosie Caldwell
Sibling · 1940 · age
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 — Montgomery-County, Virginia
Open full size
1940 US Federal Census — Montgomery-County, Virginia
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04277-00261)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Pauline Bland | 9 | Daughter | — | Virginia |
| 42 | Marie Bland | 7 | Daughter | — | Virginia |
| 43 | Raymond Bland | 5 | Son | — | Virginia |
| 44 | Marvin Bland | 2 | Son | — | Virginia |
| 45 | S. Alex Henderson | 39 | Head | Farmer | Virginia |
| 46 | Filla O. Henderson | 38 | Wife | — | Tennessee |
| 47 | Helen M. Henderson | 15 | Daughter | — | Virginia |
| 48 | Mary Ealin Henderson | 13 | Daughter | — | Virginia |
| 49 | Robert Lee Henderson | 11 | Son | — | Virginia |
| 50 | Eldridge D. Caldwell | 49 | Head | Laborer | Virginia |
| 51 | Stella O. Caldwell | 29 | Wife | Housework | Virginia |
| 52 | William Caldwell | 14 | Son | — | Virginia |
| 53 | Robert Caldwell THIS PERSON | 12 | Son | — | Virginia |
| 54 | Harry Caldwell | 10 | Son | — | Virginia |
| 55 | Herman Caldwell | 7 | Son | — | Virginia |
| 56 | Ruby May Caldwell | 5 | Daughter | — | Virginia |
| 57 | Ivan Caldwell | 3 | Son | — | Virginia |
| 58 | Pauline Caldwell | 2 | Daughter | — | Virginia |
| 59 | Rosie Caldwell | 0 | Son | — | Virginia |
| 60 | Eli A. Nolen | 61 | Head | Farm Operator | Virginia |
| 61 | Sarah O. Nolen | 59 | Wife | — | South Carolina |
| 62 | Robert L. Q. Duncan | 28 | Head | Tenant Farmer | Virginia |
| 63 | Excell Duncan | 28 | Wife | — | Virginia |
| 64 | Cecilla J. Duncan | 4 | Daughter | — | Virginia |
| 65 | Shirley Jean Duncan | 3 | Daughter | — | Virginia |
| 66 | Leon Jr. Bowers | 15 | Cousin | Laborer | Virginia |
| 67 | Floyd Nolen | 49 | Head | Farm Laborer | Virginia |
| 68 | Sallie O. Nolen | 49 | Wife | — | Virginia |
| 69 | Ernest Nolen | 18 | Son | Laborer | Virginia |
| 70 | Melva Nolen | 15 | Daughter | — | Virginia |
| 71 | Bernard Nolen | 14 | Son | — | Virginia |
| 72 | Robert Nolen | 12 | Son | — | Virginia |
| 73 | Sylvia May Nolen | 10 | Daughter | — | Virginia |
| 74 | Melvin Nolen | 7 | Son | — | Virginia |
| 75 | Carlyle Cromer | 33 | Head | Tractor Driver | Virginia |
| 76 | Virginia O. Cromer | 32 | Wife | — | Virginia |
| 77 | Billie Cromer | 13 | Son | — | Virginia |
| 78 | Jack Cromer | 10 | Son | — | Virginia |
| 79 | Betty Jane Cromer | 6 | Daughter | — | Virginia |
| 80 | John Cromer | 69 | Father | — | 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)