RS
Roland Smith — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Grand-County, Colorado
Our Model Tree links this Roland Smith across the 1930 and 1940 US Censuses in Grand-County, Colorado (XGBoost, ~Confirmed) — first a son (b.~1926), then head of a 6-person household.
Age 14
b. ~1926
Male
Son
Born: Colorado
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Grand-County, Colorado |
| Surname | Smith |
| Given Name | Roland D. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Grand |
| 1935 Residence (County) | Grand |
| Additional Details | |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | Hs 5 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Est. Birth Year | ~1926 |
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 Roland | Age | Birth yr |
|---|---|---|---|---|
| Bennie Smith | Son | — | 21 | ~1919 |
| Joyce Smith | Daughter | — | 4 | ~1936 |
| Thomas Smith | Head | — | 57 | ~1883 |
| Kyle Smith | Son | — | 5 | ~1935 |
| Alta Smith | Spouse | — | 47 | ~1893 |
| Roland Smith | Son | — | 14 | ~1926 |
Census Appearances
1930
Grand, Colorado
Son, age 4
Grand, Colorado · implied b. ~1926 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Roland J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Idaho |
| Mother's Birthplace | Colorado |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Grand-County, Colorado
Son, age 14
Grand-County, Colorado · implied b. ~1926 — 6 household members
| Surname | Smith |
| Given Name | Roland D. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Grand |
| 1935 Residence (County) | Grand |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | Hs 5 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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 Roland Smith across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Roland Smith
Son · 1940 · age 14 · b. ~1926 · Colorado
★ You are viewing this record
Sibling
Bennie Smith
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kyle Smith
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joyce Smith
Sibling · 1940 · age 4
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 — Grand-County, Colorado
Open full size
1940 US Federal Census — Grand-County, Colorado
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00464-00128)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Dorothy Shadrick | 19 | Daughter | — | Colorado |
| 42 | Ruth Shadrick | 11 | Daughter | — | Colorado |
| 43 | Alfred C. Just | 37 | Head | Farmer | Colorado |
| 44 | Gladys Just | 35 | Wife | — | Missouri |
| 45 | Keith Perry | 36 | Head | Farmer | North Dakota |
| 46 | Ruth Perry | 32 | Wife | — | Nebraska |
| 47 | Carol Perry | 13 | Daughter | — | Nebraska |
| 48 | Patricia Perry | 12 | Daughter | — | Nebraska |
| 49 | Dorothy Mae Perry | 10 | Daughter | — | Colorado |
| 50 | Eugene Perry | 9 | Son | — | Colorado |
| 51 | Sonia Perry | 7 | Daughter | — | Colorado |
| 52 | Sandra Perry | 1 | Daughter | — | Colorado |
| 53 | Jacob F. Breda | 39 | Head | Farmer | New York |
| 54 | Alice Breda | 40 | Wife | — | Indiana |
| 55 | Dorothy Breda | 9 | Daughter | — | Colorado |
| 56 | Joana M. Breda | 2 | Daughter | — | Wyoming |
| 57 | Martha E. Fabian | 69 | Mother | — | Indiana |
| 58 | Carl Hood | 17 | Lodger | Laborer | Nebraska |
| 59 | Marvin Vulgamott | 59 | Head | Farming | Missouri |
| 60 | Dolly Mae Vulgamott | 46 | Wife | — | Texas |
| 61 | Adel Peterson | 53 | Head | Farming | Sweden |
| 62 | Russell Gray | 23 | Lodger | Laborer | Colorado |
| 63 | Edwina Gray | 22 | Lodger | — | Missouri |
| 64 | Frankie Jean Gray | 3 | Lodger | — | Missouri |
| 65 | Ivan Elliott | 58 | Head | Farmer | Colorado |
| 66 | Iza Elliott | 50 | Wife | — | Colorado |
| 67 | Luke Arnett | 45 | Lodger | Laborer | Kansas |
| 68 | Thomas E. Smith | 57 | Head | Farmer | Idaho |
| 69 | Alta Smith | 47 | Wife | — | Colorado |
| 70 | Bennie D. Smith | 21 | Son | Laborer | Colorado |
| 71 | Roland D. Smith THIS PERSON | 14 | Son | — | Colorado |
| 72 | Kyle Smith | 5 | Son | — | Colorado |
| 73 | Joyce Smith | 4 | Daughter | — | Colorado |
| 74 | Edgar A. Martin | 32 | Head | Laborer | Nebraska |
| 75 | Ruth Martin | 25 | Wife | — | Nebraska |
| 76 | Elder C. Thurston | 35 | Head | Farmer | Colorado |
| 77 | Alpha Q. Thurston | 32 | Wife | — | North Dakota |
| 78 | Alpha Rae Thurston | 12 | Daughter | — | Colorado |
| 79 | Victor E. Thurston | 9 | Son | — | Colorado |
| 80 | Margaret Jean Thurston | 7 | Daughter | — | Colorado |
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)