MS
Martin Smith — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Yellowstone-County, Montana
Our Model Tree links this Martin Smith across the 1930 and 1940 US Censuses in Yellowstone-County, Montana (XGBoost, ~Confirmed) — first a son (b.~1918), then head of a 11-person household.
Age 22
b. ~1918
Male
Son
Born: Montana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Yellowstone-County, Montana |
| Surname | Smith |
| Given Name | Martin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Montana |
| 1935 Residence (City) | School District No. 2 Lockwood |
| 1935 Residence (County) | Yellowstone |
| Additional Details | |
| Occupation | 16 |
| Industry | Common Laborer |
| Class of Worker | Sugar factory |
| Hours Worked | 3 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
| Occupation | 16 |
| Township / Ward | School District No 2 Lockwood |
| Est. Birth Year | ~1918 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Martin | Age | Birth yr |
|---|---|---|---|---|
| Pat Smith | Son | — | 29 | ~1911 |
| George Smith | Son | — | 18 | ~1922 |
| Morgan Smith | Son | — | 19 | ~1921 |
| Charles Smith | Son | — | 12 | ~1928 |
| Mary Smith | Daughter | — | 14 | ~1926 |
| Chester Smith | Son | — | 27 | ~1913 |
| Martin Smith | Son | — | 22 | ~1918 |
| Dad Smith | Head | — | 63 | ~1877 |
| Reena Smith | Spouse | — | 56 | ~1884 |
| Dad Smith | Son | — | 25 | ~1915 |
| Reena Smith | Daughter | — | 17 | ~1923 |
Census Appearances
1930
Yellowstone, Montana
Son, age 12
Yellowstone, Montana · implied b. ~1918 — 42 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Martin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Montana |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Kentucky |
| Can Read/Write | Yes |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
1940
Yellowstone-County, Montana
Son, age 22
Yellowstone-County, Montana · implied b. ~1918 — 11 household members
| Surname | Smith |
| Given Name | Martin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Montana |
| 1935 Residence (City) | School District No. 2 Lockwood |
| 1935 Residence (County) | Yellowstone |
| Occupation | 16 |
| Industry | Common Laborer |
| Class of Worker | Sugar factory |
| Hours Worked | 3 |
| 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 Martin Smith across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Martin Smith
Son · 1940 · age 22 · b. ~1918 · Montana
★ You are viewing this record
Sibling
Dad Smith
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Smith
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Pat Smith
Sibling · 1940 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Morgan Smith
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Chester Smith
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Smith
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Reena Smith
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Smith
Sibling · 1940 · age 14
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 — Yellowstone-County, Montana
Open full size
1940 US Federal Census — Yellowstone-County, Montana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02234-01131)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mildred Lehmann | 22 | Wife | — | Montana |
| 42 | Beverly Lehmann | 2 | Daughter | — | Montana |
| 43 | Raymon Maness | 48 | Head | Common Laborer | Texas |
| 44 | Vera Maness | 45 | Wife | — | Indiana |
| 45 | Philip Klenck | 44 | Head | Farmer | Montana |
| 46 | Margaret Klenck | 39 | Sister | — | Montana |
| 47 | Francis Therkelsen | 14 | Nephew | — | Washington |
| 48 | Stella Therkelsen | 6 | Niece | — | Montana |
| 49 | Haller Miller | 67 | Head | — | Iowa |
| 50 | Lottie Miller | 62 | Wife | — | Kansas |
| 51 | Margaret Alice Showers | 64 | Sister | — | Kansas |
| 52 | Mollie Thirby | 67 | Head | — | Louisiana |
| 53 | Joe Thirby | 72 | Husband | — | Michigan |
| 54 | Irvin H. Cook | 48 | Head | Baggageman | Wisconsin |
| 55 | Ruth Cook | 46 | Wife | — | Wisconsin |
| 56 | Russell Cook | 20 | Son | Farmer | Montana |
| 57 | Dorothy Cook | 15 | Daughter | — | Montana |
| 58 | Irvin Cook | 9 | Son | — | Montana |
| 59 | Lawrence Mcfarland | 40 | Head | Truck Driver | South Dakota |
| 60 | Rena Mcfarland | 33 | Wife | — | Montana |
| 61 | Betty Mcfarland | 12 | Daughter | — | Montana |
| 62 | Lois Ann Mcfarland | 6 | Daughter | — | Montana |
| 63 | Dad Smith | 63 | Head | 40 | Iowa |
| 64 | Reena Smith | 56 | Wife | — | Kentucky |
| 65 | Pat Hillard Smith | 29 | Son | 12 | Colorado |
| 66 | Chester Smith | 27 | Son | 48 | Colorado |
| 67 | Dad Smith | 25 | Son | 12 | Colorado |
| 68 | Martin Smith THIS PERSON | 22 | Son | 16 | Montana |
| 69 | Morgan Smith | 19 | Son | 20 | Montana |
| 70 | George Smith | 18 | Son | 50 | Montana |
| 71 | Reena Smith | 17 | Daughter | — | Montana |
| 72 | Mary Smith | 14 | Daughter | — | Montana |
| 73 | Charles Smith | 12 | Son | — | Montana |
| 74 | Cypriel Vermandel | 53 | Head | Farmer | Belgium |
| 75 | Mary Vermandel | 53 | Wife | — | Belgium |
| 76 | Laddie Vermandel | 18 | Daughter | — | Montana |
| 77 | George Davenport | 76 | Head | — | Michigan |
| 78 | Mary Ticcin | 43 | Head | — | Colorado |
| 79 | John Ticcin | 27 | Son | 12 | Colorado |
| 80 | Dewey Salsberry | 41 | Head | 44 | Kansas |
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)