LS
Leonard Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Sheridan-County, Montana
Our Model Tree links this Leonard Smith across the 1920, 1930 and 1940 US Censuses in Sheridan-County, Montana (XGBoost, ~Confirmed), with identified parents Carl & Carl — first a son (b.~1919), then head of a 5-person household.
Age 21
b. ~1919
Male
Son
Born: Montana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Sheridan-County, Montana |
| Surname | Smith |
| Given Name | Leonard C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Montana |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Sheridan |
| Additional Details | |
| Occupation | Farm laborer |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 60 |
| Income (1939) | 150 |
| Highest Grade | Hs 4 |
| 1935 Residence | Montana |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
| Occupation | Farm Laborer |
| Township / Ward | School District 28 |
| 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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Leonard | Age | Birth yr |
|---|---|---|---|---|
| Phyllis Smith | Daughter | — | 12 | ~1928 |
| C Smith | Daughter | — | 16 | ~1924 |
| Carl Smith | Head | — | 51 | ~1889 |
| Leonard Smith | Son | — | 21 | ~1919 |
| Mary Smith | Spouse | — | 50 | ~1890 |
Census Appearances
1920
Sheridan, Montana
Son, age 2
Sheridan, Montana · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Leonard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Montana |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Minnesota |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
1930
Sheridan, Montana
Son, age 11
Sheridan, Montana · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Lenard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Montana |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Minnesota |
| Can Read/Write | Yes |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
1940
Sheridan-County, Montana
Son, age 21
Sheridan-County, Montana · implied b. ~1919 — 5 household members
| Surname | Smith |
| Given Name | Leonard C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Montana |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Sheridan |
| Occupation | Farm laborer |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 60 |
| Income (1939) | 150 |
| Highest Grade | Hs 4 |
| 1935 Residence | Montana |
| 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 Leonard Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Carl Smith (~0.92 confidence) and father Carl Smith (~0.92 confidence) and father Carl Smith (~0.92 confidence) and mother Mary Smith (~0.92 confidence) and mother Mary Smith (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Carl Smith
b. ~1889
Source father
● Household
· direct · ~0.92
Father
Carl Smith
b. ~1889
Source father
● Household
· direct · ~0.92
Father
Carl Smith
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Mary Smith
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Mary Smith
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Leonard Smith
Son · 1940 · age 21 · b. ~1919 · Montana
★ You are viewing this record
Sibling
Phyllis Smith
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
C Smith
Sibling · 1940 · age 16
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 — Sheridan-County, Montana
Open full size
1940 US Federal Census — Sheridan-County, Montana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02229-00422)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John J. Barge | 57 | Head | Farmer | Minnesota |
| 2 | Ethel Barge | 50 | Wife | — | Iowa |
| 3 | Donald D. Barge | 20 | Son | Farm Laborer | Minnesota |
| 4 | James Barge | 17 | Son | Farm Laborer | Minnesota |
| 5 | Delores S. Barge | 9 | Daughter | — | Montana |
| 6 | Frank P. Jr. Barge | 26 | Head | Driller | Minnesota |
| 7 | Alice I. Barge | 20 | Wife | — | Montana |
| 8 | Richard R. Barge | 2 | Son | — | Washington |
| 9 | Carol L. Barge | 1 | Daughter | — | Washington |
| 10 | Robert J. Cook | 23 | Head | Farmer | Montana |
| 11 | Genevieve V. Cook | 22 | Wife | — | Minnesota |
| 12 | Geraldine E. Cook | 3 | Daughter | — | Montana |
| 13 | Yvonne M. Cook | 2 | Daughter | — | Montana |
| 14 | Arthur H. Kazeck | 51 | Head | Farmer | Iowa |
| 15 | Marie I. Kazeck | 47 | Wife | — | Wisconsin |
| 16 | Donna M. Kazeck | 21 | Daughter | Housemaid | Montana |
| 17 | Ruth M. Kazeck | 19 | Daughter | Housemaid | Montana |
| 18 | Gideon Greff | 47 | Head | Farmer | Canada |
| 19 | Margaret M. Greff | 38 | Wife | — | Minnesota |
| 20 | Donald P. Greff | 18 | Son | Farm Laborer | Montana |
| 21 | Margaret B. Greff | 17 | Daughter | Housemaid | Montana |
| 22 | Delores E. Greff | 14 | Daughter | Housemaid | Montana |
| 23 | Joseph M. Greff | 6 | Son | — | Montana |
| 24 | Eugene A. Kazeck | 22 | Boarder | Farm Laborer | Montana |
| 25 | Jennie C. Barty | 21 | Boarder | Teacher | Montana |
| 26 | Bert Daley | 57 | Head | Farmer | Minnesota |
| 27 | Minnie A. Daley | 53 | Wife | — | Minnesota |
| 28 | Fred M. Hanson | 51 | Head | Farmer | North Dakota |
| 29 | Evelyn M. Hanson | 38 | Wife | — | North Dakota |
| 30 | Grace E. Hanson | 12 | Daughter | — | Montana |
| 31 | Ruth E. Hanson | 9 | Daughter | — | Canada |
| 32 | Fredrick W. Hanson | 7 | Son | — | Montana |
| 33 | Carl F. Smith | 51 | Head | Farmer | Minnesota |
| 34 | Mary C. Smith | 50 | Wife | — | Minnesota |
| 35 | Leonard C. Smith THIS PERSON | 21 | Son | Farm Laborer | Montana |
| 36 | C. Irene Smith | 16 | Daughter | Housemaid | Montana |
| 37 | Phyllis L. Smith | 12 | Daughter | — | Montana |
| 38 | George Smith | 52 | Head | Farmer | Minnesota |
| 39 | Benjamin F. Schley | 53 | Head | Farmer | Wisconsin |
| 40 | Maude P. Schley | 49 | Wife | — | Wisconsin |
Pedigree Summary
Leonard + 2 siblings
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)