MK
Mary Keller — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Logan-County, Colorado
Our Model Tree links this Mary Keller across the 1930 and 1940 US Censuses in Logan-County, Colorado (XGBoost, ~Confirmed) — first a head (b.~1888), then head of a 8-person household.
Age 52
b. ~1888
Female
Head
Born: Russia
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Logan-County, Colorado |
| Surname | Keller |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Widowed |
| Birthplace | Russia |
| 1935 Residence (City) | Sterling |
| 1935 Residence (County) | Logan |
| Naturalization Status | Alien |
| Additional Details | |
| Occupation | Manager |
| Industry | Farm |
| Class of Worker | E |
| Hours Worked | 32 |
| Income (1939) | 0 |
| Highest Grade | 6 |
| 1935 Residence | Colorado |
| Birth Country | Russia |
| Birthplace (normalized) | russia |
| Occupation | Manager |
| Township / Ward | Iliff |
| Est. Birth Year | ~1888 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Virginia Keller | Daughter | — | 9 | ~1931 |
| Pauline Keller | Daughter | — | 32 | ~1908 |
| Esther Keller | Daughter | — | 22 | ~1918 |
| Viola Keller | Daughter | — | 12 | ~1928 |
| Eleanor Keller | Daughter | — | 16 | ~1924 |
| Mary Keller | Head | — | 52 | ~1888 |
| Harold Keller | Son | — | 26 | ~1914 |
| Albert Keller | Son | — | 14 | ~1926 |
Census Appearances
1930
Logan, Colorado
Spouse, age 42
Logan, Colorado · implied b. ~1888 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Keller |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Russia |
| Naturalization Status | Alien |
| Year of Immigration | 1911 |
| Age at First Marriage | 19 |
| Father's Birthplace | Russia |
| Mother's Birthplace | Russia |
| Occupation | none |
| Can Read/Write | No |
| Mother Tongue | German |
| Birth Country | Russia |
| Birthplace (normalized) | russia |
1940
Logan-County, Colorado
Head, age 52
Logan-County, Colorado · implied b. ~1888 — 8 household members
| Surname | Keller |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Widowed |
| Birthplace | Russia |
| 1935 Residence (City) | Sterling |
| 1935 Residence (County) | Logan |
| Naturalization Status | Alien |
| Occupation | Manager |
| Industry | Farm |
| Class of Worker | E |
| Hours Worked | 32 |
| Income (1939) | 0 |
| Highest Grade | 6 |
| 1935 Residence | Colorado |
| Birth Country | Russia |
| Birthplace (normalized) | russia |
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 Keller across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Keller
Head · 1940 · age 52 · b. ~1888 · Colorado
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Logan-County, Colorado
Open full size
1940 US Federal Census — Logan-County, Colorado
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00469-00258)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Phillip Bellendir | 2 | Son | — | Colorado |
| 2 | Lawrence Bellendir | 0 | Son | — | Colorado |
| 3 | Henry Sader | 37 | Head | Operator | Nebraska |
| 4 | Mary E. Sader | 37 | Wife | — | Nebraska |
| 5 | Melvin G. Sader | 13 | Son | — | Nebraska |
| 6 | Arleda P. Sader | 8 | Daughter | — | Colorado |
| 7 | Mary Keller THIS PERSON | 52 | Head | Manager | Russia |
| 8 | Pauline Keller | 32 | Daughter | — | Russia |
| 9 | Esther Keller | 22 | Daughter | — | Colorado |
| 10 | Harold Keller | 26 | Son | Laborer | Colorado |
| 11 | Eleanor Keller | 16 | Daughter | — | Colorado |
| 12 | Albert Keller | 14 | Son | — | Colorado |
| 13 | Viola Keller | 12 | Daughter | — | Colorado |
| 14 | Virginia Keller | 9 | Daughter | — | Colorado |
| 15 | Robert Keller | 25 | Head | Laborer | Colorado |
| 16 | Esther Keller | 25 | Wife | — | Colorado |
| 17 | Wilma Lee Keller | 1 | Daughter | — | Colorado |
| 18 | John Gertner | 42 | Head | Operator | Russia |
| 19 | Anna Gertner | 38 | Wife | — | Russia |
| 20 | John Gertner | 19 | Son | — | Colorado |
| 21 | Dave Gertner | 17 | Son | — | Colorado |
| 22 | Gabriel Gertner | 16 | Son | — | Colorado |
| 23 | Marcus Gertner | 14 | Son | — | Colorado |
| 24 | Anna Mary Gertner | 13 | Daughter | — | Colorado |
| 25 | Josephine Gertner | 12 | Daughter | — | Colorado |
| 26 | Esther Gertner | 8 | Daughter | — | Colorado |
| 27 | Virginia Gertner | 7 | Daughter | — | Colorado |
| 28 | Clarence Gertner | 6 | Son | — | Colorado |
| 29 | Margaret Gertner | 3 | Daughter | — | Colorado |
| 30 | Clara May Gertner | 2 | Daughter | — | Colorado |
| 31 | Lawrence Gertner | 1 | Son | — | Colorado |
| 32 | Gottlieit Steik | 63 | Head | Operator | Russia |
| 33 | Eva Steik | 62 | Wife | — | Russia |
| 34 | Barbara Steik | 22 | Daughter | — | Colorado |
| 35 | John Steik | 19 | Son | Laborer | Colorado |
| 36 | Joe Jr. Gertner | 45 | Head | Operator | Russia |
| 37 | Mary Gertner | 40 | Wife | — | Russia |
| 38 | Mary Gertner | 19 | Daughter | Laborer | Colorado |
| 39 | Catherine Gertner | 16 | Daughter | Laborer | Colorado |
| 40 | Anna Gertner | 14 | Daughter | — | Colorado |
Related Census Records
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)