CS
Clifford Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Big-Horn-County, Montana
Our Model Tree links this Clifford Smith across the 1920, 1930 and 1940 US Censuses in Big-Horn-County, Montana (XGBoost, ~Confirmed), with identified parents Clifford & Clifford — first a son (b.~1919), then head of a 4-person household.
Age 21
b. ~1919
Male
Son
Born: Montana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Big-Horn-County, Montana |
| Surname | Smith |
| Given Name | Clifford Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Montana |
| 1935 Residence (City) | Lodge Grass Town |
| 1935 Residence (County) | Big Horn |
| Additional Details | |
| Occupation | Truck Driver |
| Industry | Dam Construction |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 480 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
| Occupation | Truck Driver |
| Township / Ward | Lodge Grass Town |
| 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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Clifford | Age | Birth yr |
|---|---|---|---|---|
| Jean Smith | Daughter | — | 18 | ~1922 |
| Clifford Smith | Head | — | 44 | ~1896 |
| Clifford Smith | Son | — | 21 | ~1919 |
| Iva Smith | Spouse | — | 42 | ~1898 |
Census Appearances
1920
Big Horn, …
Son, age 1
Big Horn, Montana · implied b. ~1919 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Clifford Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Montana |
| Father's Birthplace | Oklahoma |
| Mother's Birthplace | Arkansas |
| Can Read | No |
| Can Write | No |
| Speaks English | No |
| Mother Tongue | English |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
1930
Big Horn, …
Son, age 11
Big Horn, Montana · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Clifford Jr |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Montana |
| Father's Birthplace | Oklahoma |
| Mother's Birthplace | Missouri |
| Occupation | Housewife |
| Can Read/Write | Yes |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
1940
Big-Horn-County, Montana
Son, age 21
Big-Horn-County, Montana · implied b. ~1919 — 4 household members
| Surname | Smith |
| Given Name | Clifford Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Montana |
| 1935 Residence (City) | Lodge Grass Town |
| 1935 Residence (County) | Big Horn |
| Occupation | Truck Driver |
| Industry | Dam Construction |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 480 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
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 Clifford Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Clifford Smith (~0.92 confidence) and father Clifford Smith (~0.92 confidence) and father Clifford Smith (~0.92 confidence) and mother Iva Smith (~0.92 confidence) and mother Ruth Smith (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Clifford Smith
b. ~1896
Source father
● Household
· direct · ~0.92
Father
Clifford Smith
b. ~1896
Source father
● Household
· direct · ~0.92
Father
Clifford Smith
b. ~1896
Source father
● Household
· direct · ~0.92
Mother
Iva Smith
b. ~1898
Source mother
● Household
· direct · ~0.92
Mother
Ruth Smith
b. ~1898
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Clifford Smith
Son · 1940 · age 21 · b. ~1919 · Montana
★ You are viewing this record
Sibling
Jean Smith
Sibling · 1940 · age 18
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 — Big-Horn-County, Montana
Open full size
1940 US Federal Census — Big-Horn-County, Montana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02212-00480)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Florilla Day | 58 | Wife | — | Wisconsin |
| 2 | Dallas Day | 16 | Son | — | Montana |
| 3 | Marilyn Day | 13 | Daughter | — | Montana |
| 4 | Mary Hogg | 21 | Lodger | Teacher | Montana |
| 5 | Homer Johnson | 44 | Head | Farmer | Kentucky |
| 6 | Tessie Johnson | 42 | Wife | — | Kansas |
| 7 | Glenn Johnson | 17 | Son | — | Minnesota |
| 8 | Oakley Johnson | 15 | Son | — | North Dakota |
| 9 | Robert Johnson | 13 | Son | — | Illinois |
| 10 | John Mccall Knauer | 55 | Head | Laborer | Montana |
| 11 | Mary Mccall Knauer | 48 | Wife | — | Montana |
| 12 | Arvid Bordewick | 10 | Grandchild | — | Montana |
| 13 | William Redfield | 52 | Head | Farmer | Montana |
| 14 | Alice Redfield | 40 | Wife | — | Montana |
| 15 | Oliver Redfield | 16 | Son | Farmer | Montana |
| 16 | George Redfield | 14 | Son | Farmer | Montana |
| 17 | William Redfield | 12 | Son | — | Montana |
| 18 | Leland Redfield | 7 | Son | — | Montana |
| 19 | Roland Redfield | 3 | Son | — | Montana |
| 20 | Edward Bomar | 21 | Head | Farmer | Montana |
| 21 | La Fern Bomar | 19 | Wife | — | Minnesota |
| 22 | Doreen Bomar | 1 | Daughter | — | Montana |
| 23 | Alta Brockway | 42 | Head | Proprietor | Michigan |
| 24 | Mary Brockway | 42 | Wife | — | Indiana |
| 25 | Newton Brockway | 18 | Daughter | — | Montana |
| 26 | I Fay Brockway | 16 | Son | 30 | Montana |
| 27 | Marjorie Brockway | 15 | Daughter | — | Montana |
| 28 | Alta Jr Brockway | 11 | Son | — | Montana |
| 29 | Harold Anderson | 45 | Cook | Cook | South Dakota |
| 30 | Mary Harris | 19 | Waitress | Waitress | Wyoming |
| 31 | William Brockway | 67 | Father | Clerk | Montana |
| 32 | Gertrude Mellish | 36 | Guest | Proprietor | Missouri |
| 33 | Clifford Smith | 44 | Head | Laborer | Oklahoma |
| 34 | Iva Smith | 42 | Wife | Clerk | Oklahoma |
| 35 | Clifford Jr Smith THIS PERSON | 21 | Son | Truck Driver | Montana |
| 36 | Jean Smith | 18 | Daughter | — | Montana |
| 37 | Joseph Packer | 30 | Head | Proprietor | Wyoming |
| 38 | Josephine Packer | 26 | Wife | Attendant | Montana |
| 39 | Ira Mcbroom | 54 | Lodger | — | Illinois |
| 40 | Charles Schmaus | 54 | Head | Druggist | South Dakota |
Pedigree Summary
Clifford + 1 sibling
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
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)