MK
Mary Klein — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hettinger-County, North Dakota
Our Model Tree links this Mary Klein across the 1930 and 1940 US Censuses in Hettinger-County, North Dakota (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 11-person household.
Age 13
b. ~1927
Female
Daughter
Born: North Dakota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hettinger-County, North Dakota |
| Surname | Klein |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | North Dakota |
| 1935 Residence (City) | Madison (136-94) |
| 1935 Residence (County) | Hettinger |
| Additional Details | |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
| Township / Ward | Madison 13694 |
| Est. Birth Year | ~1927 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Michael Klein | Head | — | 49 | ~1891 |
| Peter Klein | Son | — | 20 | ~1920 |
| Anton Klein | Son | — | 12 | ~1928 |
| Emma Klein | Daughter | — | 18 | ~1922 |
| Casper Klein | Son | — | 10 | ~1930 |
| Ralph Klein | Son | — | 1 | ~1939 |
| Simon Klein | Son | — | 15 | ~1925 |
| Joseph Klein | Son | — | 8 | ~1932 |
| Margaret Klein | Spouse | — | 44 | ~1896 |
| Mary Klein | Daughter | — | 13 | ~1927 |
| Irene Klein | Daughter | — | 6 | ~1934 |
Census Appearances
1930
Hettinger, North …
Daughter, age 3
Hettinger, North Dakota · implied b. ~1927 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Klein |
| Given Name | Mary A |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Russia |
| Mother's Birthplace | North Dakota |
| Can Read/Write | No |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1940
Hettinger-County, North …
Daughter, age 13
Hettinger-County, North Dakota · implied b. ~1927 — 11 household members
| Surname | Klein |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | North Dakota |
| 1935 Residence (City) | Madison (136-94) |
| 1935 Residence (County) | Hettinger |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| 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 Klein across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Klein
Daughter · 1940 · age 13 · b. ~1927 · North Dakota
★ You are viewing this record
Sibling
Peter Klein
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anton Klein
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Klein
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Simon Klein
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Casper Klein
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ralph Klein
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Irene Klein
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Emma Klein
Sibling · 1940 · age 18
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 — Hettinger-County, North Dakota
Open full size
1940 US Federal Census — Hettinger-County, North Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03004-00108)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Catherine | 37 | Wife | — | Rumania |
| 42 | Carl | 15 | Son | — | North Dakota |
| 43 | Albert | 13 | Son | — | North Dakota |
| 44 | John J | 12 | Son | — | North Dakota |
| 45 | Fred J | 11 | Son | — | North Dakota |
| 46 | Rose C | 9 | Daughter | — | North Dakota |
| 47 | Kenneth W | 7 | Son | — | North Dakota |
| 48 | Vernon S | 5 | Son | — | North Dakota |
| 49 | Herbert I | 2 | Son | — | North Dakota |
| 50 | Joseph M | 0 | Son | — | North Dakota |
| 51 | John E Rampl | 25 | Head | Farmer | North Dakota |
| 52 | Theresa Rampl | 25 | Wife | — | North Dakota |
| 53 | John J Rampl | 1 | Son | — | North Dakota |
| 54 | Karl Rampl | 65 | Father | — | Rumania |
| 55 | Catherine Rampl | 63 | Mother | — | Rumania |
| 56 | Eva Rampl | 20 | Sister | — | North Dakota |
| 57 | Michael Klein | 49 | Head | Farmer | Russia |
| 58 | Margaret Klein | 44 | Wife | — | North Dakota |
| 59 | Peter Klein | 20 | Son | Farm Laborer | North Dakota |
| 60 | Emma Klein | 18 | Daughter | — | North Dakota |
| 61 | Simon Klein | 15 | Son | Farm Laborer | North Dakota |
| 62 | Mary Klein THIS PERSON | 13 | Daughter | — | North Dakota |
| 63 | Anton Klein | 12 | Son | — | North Dakota |
| 64 | Casper Klein | 10 | Son | — | North Dakota |
| 65 | Joseph Klein | 8 | Son | — | North Dakota |
| 66 | Irene Klein | 6 | Daughter | — | North Dakota |
| 67 | Ralph Klein | 1 | Son | — | North Dakota |
| 68 | Frank Keller | 36 | Head | Farmer | North Dakota |
| 69 | Anna A Keller | 31 | Wife | — | North Dakota |
| 70 | John F Keller | 17 | Son | — | North Dakota |
| 71 | Joseph Keller | 13 | Son | — | North Dakota |
| 72 | Rose E Keller | 11 | Daughter | — | North Dakota |
| 73 | Catherine T Keller | 9 | Daughter | — | North Dakota |
| 74 | Leona V Keller | 7 | Daughter | — | North Dakota |
| 75 | Edward T Keller | 5 | Son | — | North Dakota |
| 76 | Andrew S Keller | 3 | Son | — | North Dakota |
| 77 | Leo Rausch | 32 | Head | Farmer | North Dakota |
| 78 | Frances Rausch | 27 | Wife | — | North Dakota |
| 79 | Rose Rausch | 3 | Daughter | — | North Dakota |
| 80 | Clarence Rausch | 2 | 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)