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Mary Larsen — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hill-County, Montana
Our Model Tree links this Mary Larsen across the 1930 and 1940 US Censuses in Hill-County, Montana (XGBoost, ~Confirmed) — first a spouse (b.~1889), then head of a 7-person household.
Age 51
b. ~1889
Female
Spouse
Born: Minnesota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Hill-County, Montana |
| Surname | Larsen |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | Unincorporated place Rudyard |
| 1935 Residence (County) | Hill |
| Additional Details | |
| Highest Grade | C 2 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Township / Ward | Unincorporated Place Rudyard |
| Est. Birth Year | ~1889 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Phyllis Larsen | Daughter | — | 14 | ~1926 |
| Patricia Larsen | Daughter | — | 11 | ~1929 |
| Peter Larsen | Head | — | 59 | ~1881 |
| Mary Larsen | Spouse | — | 51 | ~1889 |
| Norma Larsen | Daughter | — | 13 | ~1927 |
| Phillip Larsen | Son | — | 19 | ~1921 |
| Carol Larsen | Daughter | — | 22 | ~1918 |
Census Appearances
1930
Hill, Montana
Other, age 41
Hill, Montana · implied b. ~1889 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larsen |
| Given Name | Mary E. |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Minnesota |
| Age at First Marriage | 27 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Wisconsin |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Hill-County, Montana
Spouse, age 51
Hill-County, Montana · implied b. ~1889 — 7 household members
| Surname | Larsen |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | Unincorporated place Rudyard |
| 1935 Residence (County) | Hill |
| Highest Grade | C 2 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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 Larsen across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Larsen
Spouse · 1940 · age 51 · b. ~1889 · Montana
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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 — Hill-County, Montana
Open full size
1940 US Federal Census — Hill-County, Montana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02221-00646)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Orville | 31 | son | Farmer | Montana |
| 42 | Joseph De Martin | 68 | head | Farmer | California |
| 43 | Stella De Martin | 26 | daughter | — | Montana |
| 44 | Clifford Hodgdon | 36 | head | Farmer | Wisconsin |
| 45 | Dorothy Hodgdon | 36 | wife | — | Wisconsin |
| 46 | Leonard Paier | 24 | head | Farmer | North Dakota |
| 47 | Hannah Paier | 30 | wife | — | Pennsylvania |
| 48 | Le Roy Paier | 5 | son | — | Washington |
| 49 | Raymond Hagen | 21 | hired hand | Farm Laborer | North Dakota |
| 50 | Clara Hammersdorfer | 74 | head | — | Pennsylvania |
| 51 | Glen Mistake | 30 | husband | — | Minnesota |
| 52 | Glen Mistake | 27 | son | Farmer | Montana |
| 53 | Gertrude Mistake | 23 | daughter in law | — | Montana |
| 54 | James Le Roy Mistake | 3 | grandson | — | Montana |
| 55 | Joseph Mistake | 76 | father in law | — | Iowa |
| 56 | John Mc Laughlin | 71 | head | Civil Engineer | California |
| 57 | Mamie Mc Laughlin | 25 | wife | — | Montana |
| 58 | Hugh Mc Fadden | 43 | head | Farmer | North Dakota |
| 59 | Clara L. Mc Fadden | 34 | wife | — | Minnesota |
| 60 | Lorraine Mc Fadden | 10 | daughter | — | North Dakota |
| 61 | Joyce Mc Fadden | 9 | daughter | — | North Dakota |
| 62 | Dennis Mc Fadden | 5 | son | — | North Dakota |
| 63 | Jean Mc Fadden | 5 | daughter | — | Montana |
| 64 | Guy Van Wechel | 37 | head | Farmer | Iowa |
| 65 | Evelyn Van Wechel | 35 | wife | — | Minnesota |
| 66 | Dorothy Jean Van Wechel | 3 | daughter | — | Montana |
| 67 | Peter Larsen | 59 | head | Farmer | Denmark |
| 68 | Mary Larsen THIS PERSON | 51 | wife | — | Minnesota |
| 69 | Carol Larsen | 22 | daughter | School Teacher | Montana |
| 70 | Phillip Larsen | 19 | son | Farm Laborer | Montana |
| 71 | Phyllis Larsen | 14 | daughter | — | Montana |
| 72 | Norma Larsen | 13 | daughter | — | Montana |
| 73 | Patricia Larsen | 11 | daughter | — | Montana |
| 74 | John Dreb | 31 | head | Farmer | Wisconsin |
| 75 | Louis Dreb | 61 | father | Farm Laborer | Iowa |
| 76 | Cathern Dreb | 54 | mother | — | Wisconsin |
| 77 | Hans Kuehl | 50 | head | Farmer | Minnesota |
| 78 | Margaret Voss | 35 | housekeeper | Housekeeper | Montana |
| 79 | Alfred Voss | 14 | son | — | Montana |
| 80 | Irene Voss | 16 | 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)