MK
Mary Keller — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Oliver-County, North Dakota
Our Model Tree links this Mary Keller across the 1930 and 1940 US Censuses in Oliver-County, North Dakota (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 9-person household.
Age 11
b. ~1929
Female
Daughter
Born: North Dakota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Oliver-County, North Dakota |
| Surname | Keller |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | North Dakota |
| 1935 Residence (City) | Oliver |
| 1935 Residence (County) | Oliver |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | No Dak |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
| Est. Birth Year | ~1929 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Keller | Daughter | — | 11 | ~1929 |
| Caroline Keller | Daughter | — | 17 | ~1923 |
| Annie Keller | Daughter | — | 15 | ~1925 |
| Rodick Keller | Head | — | 50 | ~1890 |
| Robert Keller | Other | — | 2 | ~1938 |
| Melvin Keller | Son | — | 18 | ~1922 |
| Walter Keller | Son | — | 13 | ~1927 |
| Herbert Keller | Son | — | 20 | ~1920 |
| George Keller | Son | — | 20 | ~1920 |
Census Appearances
1930
Oliver, North …
Daughter, age 1
Oliver, North Dakota · implied b. ~1929 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Keller |
| Given Name | Mary G. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Odessa Russia |
| Mother's Birthplace | North Dakota |
| Industry | none |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1940
Oliver-County, North …
Daughter, age 11
Oliver-County, North Dakota · implied b. ~1929 — 9 household members
| Surname | Keller |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | North Dakota |
| 1935 Residence (City) | Oliver |
| 1935 Residence (County) | Oliver |
| Highest Grade | No 5 |
| 1935 Residence | No Dak |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
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.
Show:
This person
Anchor record
Mary Keller
Daughter · 1940 · age 11 · b. ~1929 · North Dakota
★ You are viewing this record
Sibling
Walter Keller
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Keller
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Caroline Keller
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Herbert Keller
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Melvin Keller
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Annie Keller
Sibling · 1940 · age 15
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 — Oliver-County, North Dakota
Open full size
1940 US Federal Census — Oliver-County, North Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03008-00830)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Leonard Keller | 4 | son | — | North Dakota |
| 42 | Norman Keller | 2 | son | — | North Dakota |
| 43 | Rodick Keller | 50 | head | Farmer | Iowa |
| 44 | Herbert Keller | 20 | son | Farmer | North Dakota |
| 45 | George Keller | 20 | son | Laborer | North Dakota |
| 46 | Melvin Keller | 18 | son | Laborer | North Dakota |
| 47 | Caroline Keller | 17 | daughter | — | North Dakota |
| 48 | Annie Keller | 15 | daughter | — | North Dakota |
| 49 | Walter Keller | 13 | son | — | North Dakota |
| 50 | Mary Keller THIS PERSON | 11 | daughter | — | North Dakota |
| 51 | Robert Keller | 2 | grandson | — | North Dakota |
| 52 | Albert Goetz | 24 | head | Farmer | North Dakota |
| 53 | Clara Goetz | 20 | wife | — | North Dakota |
| 54 | Helen Jane Goetz | 2 | daughter | — | North Dakota |
| 55 | Cyprian Keller | 24 | head | Farmer | North Dakota |
| 56 | Leonora Keller | 18 | wife | — | North Dakota |
| 57 | Adolph Goetz | 65 | head | Farmer | Russia |
| 58 | Louise Goetz | 63 | wife | — | Russia |
| 59 | Edgar Goetz | 22 | son | Laborer | North Dakota |
| 60 | Hulda Goetz | 19 | daughter | — | North Dakota |
| 61 | George Gress | 29 | head | Farmer | Canada English |
| 62 | Mary Gress | 22 | wife | — | North Dakota |
| 63 | Elenore Gress | 5 | daughter | — | North Dakota |
| 64 | Matilda Gress | 2 | daughter | — | North Dakota |
| 65 | Janet Gress | 1 | daughter | — | North Dakota |
| 66 | Otto Riener | 37 | head | Farmer | North Dakota |
| 67 | Katie Riener | 36 | wife | — | Russia |
| 68 | Elmer Riener | 12 | son | — | North Dakota |
| 69 | Lorraine Laible | 15 | maid | Maid | North Dakota |
| 70 | Henry Beach | 42 | head | Farmer | Nebraska |
| 71 | Selma Beach | 34 | wife | — | Texas |
| 72 | Patricia Beach | 2 | daughter | — | North Dakota |
| 73 | Herbert Wick | 21 | hired hand | Laborer | North Dakota |
| 74 | Albert Huber | 42 | head | Farmer | South Dakota |
| 75 | Hattie Huber | 36 | wife | — | North Dakota |
| 76 | Melvin Huber | 14 | son | Laborer | North Dakota |
| 77 | Vernon Huber | 15 | son | Laborer | North Dakota |
| 78 | Lloyd Huber | 12 | son | — | North Dakota |
| 79 | Velljean Huber | 10 | daughter | — | North Dakota |
| 80 | Arles Huber | 7 | son | — | North Dakota |
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)