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Mary Leach — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Idaho-County, Idaho
Our Model Tree links this Mary Leach across the 1930 and 1940 US Censuses in Idaho-County, Idaho (XGBoost, ~Confirmed) — first a spouse (b.~1895), then head of a 8-person household.
Age 45
b. ~1895
Female
Spouse
Born: Idaho
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Idaho-County, Idaho |
| Surname | Leach |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Idaho |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Idaho |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Idaho |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
| Township / Ward | Harpster Ep |
| Est. Birth Year | ~1895 |
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 |
|---|---|---|---|---|
| Laurene Leach | Daughter | — | 9 | ~1931 |
| Floyd Leach | Head | — | 45 | ~1895 |
| Wayne Leach | Son | — | 15 | ~1925 |
| Floyd Leach | Son | — | 18 | ~1922 |
| Robert Leach | Son | — | 22 | ~1918 |
| Mary Leach | Spouse | — | 45 | ~1895 |
| Donald Leach | Son | — | 20 | ~1920 |
| Laurance Leach | Son | — | 9 | ~1931 |
Census Appearances
1930
Idaho, Idaho
Other, age 37
Idaho, Idaho · implied b. ~1893 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leach |
| Given Name | Mary E. |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Idaho |
| Age at First Marriage | 21 |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Kentucky |
| Can Read/Write | Yes |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
1940
Idaho-County, Idaho
Spouse, age 45
Idaho-County, Idaho · implied b. ~1895 — 8 household members
| Surname | Leach |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Idaho |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Idaho |
| Highest Grade | No 8 |
| 1935 Residence | Idaho |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
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 45 · b. ~1895 · Idaho
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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 — Idaho-County, Idaho
Open full size
1940 US Federal Census — Idaho-County, Idaho
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00747-00254)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lenora J. Groom | 5 | Daughter | — | Idaho |
| 2 | William M. Hopper | 19 | Nephew | Farm Hand | Idaho |
| 3 | Eileen E. Davis | 19 | Lodger | Teacher | Washington |
| 4 | Clarence C. Shearer | 39 | Head | Operator | Iowa |
| 5 | Dale W. Shearer | 37 | Brother | Cook | Idaho |
| 6 | Julia A. Shearer | 78 | Mother | — | Iowa |
| 7 | Thomas W. Otto | 35 | Head | Road Worker | Idaho |
| 8 | Muril A. Otto | 28 | Wife | — | Idaho |
| 9 | Thomas R. Otto | 12 | Son | — | Idaho |
| 10 | Anita J. Otto | 8 | Daughter | — | Idaho |
| 11 | Floyd A. Leach | 45 | Head | Warehouseman | Oregon |
| 12 | Mary E. Leach THIS PERSON | 45 | Wife | — | Idaho |
| 13 | Robert A. Leach | 22 | Son | Service Station Operator | Washington |
| 14 | Donald B. Leach | 20 | Son | Assistant | Idaho |
| 15 | Floyd E. Leach | 18 | Son | Assistant | Washington |
| 16 | Wayne R. Leach | 15 | Son | — | Idaho |
| 17 | Laurene J. Leach | 9 | Daughter | — | Idaho |
| 18 | Laurance J. Leach | 9 | Son | — | Idaho |
| 19 | Dwight F. Morrow | 54 | Head | Farmer | Iowa |
| 20 | Emma S. Morrow | 49 | Wife | — | Idaho |
| 21 | Donald F. Morrow | 19 | Son | Farm Hand | Idaho |
| 22 | Loyd E. Rupe | 47 | Head | Farmer | Missouri |
| 23 | Murl J. Rupe | 42 | Wife | — | Idaho |
| 24 | Donald E. R. Rupe | 22 | Son | Assistant | Idaho |
| 25 | Loraine S. Rupe | 17 | Daughter | — | Idaho |
| 26 | Geneva M. Rupe | 15 | Daughter | — | Idaho |
| 27 | Eldene A. Rupe | 11 | Daughter | — | Idaho |
| 28 | Sharon J. Rupe | 5 | Daughter | — | Idaho |
| 29 | Dale M. Shearer | 9 | Head | — | Idaho |
| 30 | John M. Shearer | 6 | Nephew | — | Idaho |
| 31 | William L. Shearer | 3 | Nephew | — | Idaho |
| 32 | William H. Mccomas | 51 | Head | Farmer | Colorado |
| 33 | Zina B. Mccomas | 23 | Wife | — | Idaho |
| 34 | Merle J. Mccomas | 7 | Son | — | Idaho |
| 35 | Virgil D. Mccomas | 4 | Stepson | — | Idaho |
| 36 | James E. Gribble | 50 | Head | Miner | Idaho |
| 37 | Joy G. Gribble | 26 | Wife | — | Kansas |
| 38 | Beverly Hutchings | 9 | Daughter | — | Utah |
| 39 | Coral R. Miller | 5 | Stepson | — | Utah |
| 40 | Evelyn E. Miller | 5 | Daughter | — | Idaho |
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)