RS
Ralph Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cascade-County, Montana
Our Model Tree links this Ralph Smith across the 1920, 1930 and 1940 US Censuses in Cascade-County, Montana (XGBoost, ~Confirmed), with identified parents Hiram & Eva — first a head (b.~1906), then head of a 4-person household.
Age 34
b. ~1906
Male
Head
Born: Idaho
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cascade-County, Montana |
| Surname | Smith |
| Given Name | Ralph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Idaho |
| 1935 Residence (City) | Great Falls |
| 1935 Residence (County) | Cascade |
| Additional Details | |
| Occupation | Zinc plant operator |
| Industry | Smelter |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1425 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
| Occupation | Zinc Plant Operator |
| Township / Ward | Great Falls |
| Est. Birth Year | ~1906 |
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 Ralph | Age | Birth yr |
|---|---|---|---|---|
| Carol Smith | Daughter | — | 1 | ~1939 |
| Ralph Smith | Head | — | 34 | ~1906 |
| Lloyd Smith | Son | — | 5 | ~1935 |
| Doris Smith | Spouse | — | 35 | ~1905 |
Census Appearances
1920
Cascade, Montana
Son, age 14
Cascade, Montana · implied b. ~1906 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Ralph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Idaho |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Indiana |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
1930
Cascade, Montana
Head, age 24
Cascade, Montana · implied b. ~1906 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Ralph L. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Idaho |
| Age at First Marriage | 23 |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Iowa |
| Occupation | Laborer |
| Industry | Smelter |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 40 |
| Radio Set | R |
| Veteran | No |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
1940
Cascade-County, Montana
Head, age 34
Cascade-County, Montana · implied b. ~1906 — 4 household members
| Surname | Smith |
| Given Name | Ralph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Idaho |
| 1935 Residence (City) | Great Falls |
| 1935 Residence (County) | Cascade |
| Occupation | Zinc plant operator |
| Industry | Smelter |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1425 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
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 Ralph Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Hiram Smith (~0.92 confidence) and mother Eva Smith (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Hiram Smith
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Eva Smith
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ralph Smith
Head · 1940 · age 34 · b. ~1906 · Montana
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Cascade-County, Montana
Open full size
1940 US Federal Census — Cascade-County, Montana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02214-00717)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Thomas Mcdonald | 3 | Son | — | Montana |
| 42 | Ernest C. Jr. Mccabe | 21 | Head | Salesman | Montana |
| 43 | Aileen Mccabe | 20 | Wife | — | Kansas |
| 44 | Patricia Mccabe | 1 | Daughter | — | Montana |
| 45 | Charles F. Hull | 31 | Head | Salesman | Washington |
| 46 | Lillian Hull | 38 | Wife | — | Wisconsin |
| 47 | Roger Hull | 3 | Son | — | Oregon |
| 48 | Craig Hull | 2 | Son | — | Oregon |
| 49 | Daniel B. Van Deberg | 54 | Head | Storekeeper | Iowa |
| 50 | John C. Ames | 43 | Head | Salesman | North Dakota |
| 51 | Martha Ames | 36 | Wife | — | North Dakota |
| 52 | Pete Allen Ames | 3 | Son | — | North Dakota |
| 53 | John C. Johnson | 69 | Head | Watchman | Sweden |
| 54 | Blenda Johnson | 75 | Wife | — | Sweden |
| 55 | Edna I. Swanson | 45 | Daughter | Bookkeeper | Montana |
| 56 | John D. Ellefson | 81 | Head | — | Norway |
| 57 | Mary E. Ellefson | 78 | Wife | — | Norway |
| 58 | Clarence Ellefson | 40 | Son | — | Montana |
| 59 | Ralph Smith THIS PERSON | 34 | Head | Zinc Plant Operator | Idaho |
| 60 | Doris Smith | 35 | Wife | — | Montana |
| 61 | Lloyd Smith | 5 | Son | — | Montana |
| 62 | Carol Smith | 1 | Daughter | — | Montana |
| 63 | T. P. Harsh | 68 | Head | Miner | Iowa |
| 64 | Rosina Harsh | 53 | Wife | Practical Nurse | Nebraska |
| 65 | Loren T. Harsh | 27 | Son | Smelter Worker | Washington |
| 66 | Edith A. Harsh | 20 | Daughter | Seamstress | Washington |
| 67 | Lloyd W. Harsh | 16 | Son | — | Washington |
| 68 | Nora Scherlie | 63 | Head | — | Minnesota |
| 69 | William T. O'Donnell | 73 | Head | — | Wisconsin |
| 70 | Rose O'Donnell | 75 | Wife | — | Illinois |
| 71 | Matthew J. Hammill | 44 | Head | Hotel Operator | Montana |
| 72 | Jeanne H. Hammill | 40 | Wife | Laundress | Wisconsin |
| 73 | Martha J. Hammill | 13 | Daughter | — | Montana |
| 74 | Frank Christman | 72 | Brother-in-law | — | Wisconsin |
| 75 | Millett J. Keller | 24 | Head | Optometrist | Montana |
| 76 | Mary Keller | 22 | Wife | — | Montana |
| 77 | Millett Jr. Keller | 2 | Son | — | Montana |
| 78 | Adler R. Ferron | 47 | Head | Miller | Montana |
| 79 | Leona M. Ferron | 41 | Wife | — | Minnesota |
| 80 | Donald R. Ferron | 6 | Son | — | Montana |
Pedigree Summary
Ralph
Gen 1 · 2 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)