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Mary Montgomery — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Powder-River-County, Montana
Our Model Tree links this Mary Montgomery across the 1920, 1930 and 1940 US Censuses in Powder-River-County, Montana (XGBoost, ~Confirmed) — first a head (b.~1868), then head of a 3-person household.
Age 72
b. ~1868
Female
Head
Born: Iowa
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Powder-River-County, Montana |
| Surname | Montgomery |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 72 |
| Marital Status | Widowed |
| Birthplace | Iowa |
| 1935 Residence (City) | School Dist # 27 |
| 1935 Residence (County) | Powder River |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | School Dist 27 |
| Est. Birth Year | ~1868 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Montgomery | Head | — | 72 | ~1868 |
| Clyde Montgomery | Son | — | 49 | ~1891 |
| Charles Montgomery | Son | — | 54 | ~1886 |
Census Appearances
1920
Powder River, …
Spouse, age 52
Powder River, Montana · implied b. ~1868 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Montgomery |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | England |
| Mother's Birthplace | South Carolina |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Powder River, …
Spouse, age 62
Powder River, Montana · implied b. ~1868 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Montgomery |
| Given Name | Mary B |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 20 |
| Father's Birthplace | England |
| Mother's Birthplace | N. Carolina |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Powder-River-County, Montana
Head, age 72
Powder-River-County, Montana · implied b. ~1868 — 3 household members
| Surname | Montgomery |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 72 |
| Marital Status | Widowed |
| Birthplace | Iowa |
| 1935 Residence (City) | School Dist # 27 |
| 1935 Residence (County) | Powder River |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Mary Montgomery across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Montgomery
Head · 1940 · age 72 · b. ~1868 · 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 — Powder-River-County, Montana
Open full size
1940 US Federal Census — Powder-River-County, Montana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02227-00379)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George Smith | 51 | Head | Farmer | Iowa |
| 2 | Amanda Smith | 34 | Wife | — | Virginia |
| 3 | Ruth Smith | 5 | Daughter | — | Montana |
| 4 | Mary Montgomery THIS PERSON | 72 | Head | — | Iowa |
| 5 | Charles Montgomery | 54 | Son | Laborer | Iowa |
| 6 | Clyde Montgomery | 49 | Son | Farmer | Iowa |
| 7 | Isaac Le Segue | 40 | Head | Farmer | South Dakota |
| 8 | Mary Le Segue | 37 | Wife | — | Pennsylvania |
| 9 | Evangeline Le Segue | 17 | Daughter | — | Montana |
| 10 | Harold Ridenour | 25 | Head | Laborer | Oregon |
| 11 | Edwin L. Harris | 67 | Head | Farmer | Missouri |
| 12 | Rosie L. Harris | 63 | Wife | — | Missouri |
| 13 | Marvin L. Harris | 40 | Son | Farmer | Missouri |
| 14 | Eldon V. Harris | 29 | Son | Laborer | Missouri |
| 15 | Clare A. Green | 31 | Head | Farmer | Wisconsin |
| 16 | John J. Wiggins | 65 | Head | Farmer | Wisconsin |
| 17 | Dora Wiggins | 52 | Wife | — | South Dakota |
| 18 | James P. Cunningham | 22 | Hired Hand | Laborer | Washington |
| 19 | Charles Muller | 48 | Head | Farmer | Iowa |
| 20 | Clarence Avey | 44 | Hired Hand | Laborer | Nebraska |
| 21 | Frank Koprach | 46 | Head | Farmer | Austria |
| 22 | Gail Koprach | 42 | Wife | — | Montana |
| 23 | Phoebe Ann Koprach | 10 | Daughter | — | Montana |
| 24 | Vernon Ashworth | 26 | Head | Truck Driver | Montana |
| 25 | Verla Ashworth | 25 | Wife | School Teacher | Wisconsin |
| 26 | Willis A. Green | 11 | Brother-in-law | — | Wisconsin |
| 27 | Lee Wright | 72 | Head | Farmer | Kentucky |
| 28 | Herbert D. Phillips | 40 | Head | Farmer | Wyoming |
| 29 | Alice R. Phillips | 33 | Wife | — | Indiana |
| 30 | Carl R. Phillips | 12 | Son | — | Wyoming |
| 31 | Alvin R. Phillips | 11 | Son | — | Wyoming |
| 32 | Audrey Phillips | 9 | Daughter | — | Montana |
| 33 | Emmons Pierce | 57 | Head | Farmer | Iowa |
| 34 | Lester J. Carleh | 46 | Head | Farmer | Missouri |
| 35 | J. Maud Carleh | 44 | Wife | — | Missouri |
| 36 | Ralph Carleh | 18 | Son | New Worker | Montana |
| 37 | Gerald Carleh | 15 | Son | New Worker | Montana |
| 38 | Robert Carleh | 14 | Son | New Worker | Missouri |
| 39 | Clarence Carleh | 11 | Son | New Worker | Montana |
| 40 | Carolyn Carleh | 2 | Daughter | — | Montana |
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)