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Mary Leach — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Towner-County, North Dakota
Our Model Tree links this Mary Leach across the 1930 and 1940 US Censuses in Towner-County, North Dakota (XGBoost, ~Confirmed) — first a spouse (b.~1881), then head of a 5-person household.
Age 59
b. ~1881
Female
Spouse
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Towner-County, North Dakota |
| Surname | Leach |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 59 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Towner |
| 1935 Residence (County) | McHenry |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 1935 Residence | N Dak |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Geronis Twp |
| Est. Birth Year | ~1881 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Frank Leach | Head | — | 73 | ~1867 |
| Dorothy Leach | Daughter | — | 16 | ~1924 |
| Mary Leach | Spouse | — | 59 | ~1881 |
| William Leach | Son | — | 27 | ~1913 |
| Jessie Leach | Daughter | — | 18 | ~1922 |
Census Appearances
1930
Towner, North …
Spouse, age 50
Towner, North Dakota · implied b. ~1880 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leach |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 25 |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Towner-County, North …
Spouse, age 59
Towner-County, North Dakota · implied b. ~1881 — 5 household members
| Surname | Leach |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 59 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Towner |
| 1935 Residence (County) | McHenry |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 1935 Residence | N Dak |
| 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 Leach across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Leach
Spouse · 1940 · age 59 · b. ~1881 · North Dakota
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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 — Towner-County, North Dakota
Open full size
1940 US Federal Census — Towner-County, North Dakota
Page Contents
36 people indexed on this census page (nara:1940:m-t0627-03015-00907)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Eugene Blake | 9 | Son | — | N Dak |
| 2 | Harold Blake | 7 | Son | — | N Dak |
| 3 | Roland Blake | 4 | Son | — | N Dak |
| 4 | Paul Reichel | 72 | Head | — | Germany |
| 5 | Ernest Blake | 33 | Head | Farmer | Germany |
| 6 | Martha Blake | 28 | Wife | — | N Dak |
| 7 | Lavern Blake | 2 | Son | — | N Dak |
| 8 | Peter Capilen | 36 | Head | Farmer | N Dak |
| 9 | Erna Capilen | 32 | Wife | — | N Dak |
| 10 | Merton Capilen | 6 | Son | — | N Dak |
| 11 | Frank D. Leach | 73 | Head | Farmer | Iowa |
| 12 | Mary Leach THIS PERSON | 59 | Wife | — | Iowa |
| 13 | William Leach | 27 | Son | Farmer | N Dak |
| 14 | Jessie Leach | 18 | Daughter | — | N Dak |
| 15 | Dorothy Leach | 16 | Daughter | — | N Dak |
| 16 | Jack Klipfel | 34 | Head | Farmer | N Dak |
| 17 | Louise Klipfel | 37 | Wife | — | N Dak |
| 18 | Willard Klipfel | 7 | Son | — | N Dak |
| 19 | Allen Klipfel | 2 | Son | — | N Dak |
| 20 | Fred Koss | 61 | Head | Farmer | Germany |
| 21 | Margaret Koss | 43 | Wife | — | Germany |
| 22 | Warner Koss | 20 | Son | Farmer | N Dak |
| 23 | Ruby Koss | 17 | Daughter | — | N Dak |
| 24 | June Koss | 13 | Daughter | — | N Dak |
| 25 | Bill Lusky | 45 | Lodger | Laborer | Germany |
| 26 | Robert Martin | 72 | Head | Farmer | Canada |
| 27 | Herman Landing | 41 | Head | Farmer | Russia |
| 28 | Amanda Bauwald | 60 | Housekeeper | Housework | Russia |
| 29 | Murl Baker | 39 | Head | Farmer | N Dak |
| 30 | Nellie Baker | 34 | Wife | — | N Dak |
| 31 | Harold Baker | 15 | Son | Laborer | N Dak |
| 32 | Ralph Baker | 14 | Son | — | N Dak |
| 33 | Allen Baker | 12 | Son | — | N Dak |
| 34 | Theo Capland | 37 | Head | Farmer | Norway |
| 35 | Peter Hoy | 52 | Lodger | Laborer | Denmark |
| 36 | Trygve Kvass | 39 | Lodger | Farmer | Norway |
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)