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Leon Williams — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Oneida-County, Idaho
Our Model Tree links this Leon Williams across the 1930 and 1940 US Censuses in Oneida-County, Idaho (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 7-person household.
Age 13
b. ~1927
Male
Son
Born: Idaho
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Oneida-County, Idaho |
| Surname | Williams |
| Given Name | Leon |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Idaho |
| 1935 Residence (City) | Malad City Village |
| 1935 Residence (County) | Oneida |
| Additional Details | |
| Highest Grade | 5 |
| 1935 Residence | Same place |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
| Township / Ward | Malad City Village |
| 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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Leon | Age | Birth yr |
|---|---|---|---|---|
| Glen Williams | Son | — | 22 | ~1918 |
| Thayne Williams | Son | — | 17 | ~1923 |
| Martha Williams | Spouse | — | 50 | ~1890 |
| Leon Williams | Son | — | 13 | ~1927 |
| Percy Williams | Son | — | 10 | ~1930 |
| Edward Williams | Head | — | 50 | ~1890 |
| Claude Williams | Son | — | 20 | ~1920 |
Census Appearances
1930
Oneida, Idaho
Son, age 3
Oneida, Idaho · implied b. ~1927 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Leon L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Idaho |
| Father's Birthplace | Idaho |
| Mother's Birthplace | Utah |
| Occupation | none |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
1940
Oneida-County, Idaho
Son, age 13
Oneida-County, Idaho · implied b. ~1927 — 7 household members
| Surname | Williams |
| Given Name | Leon |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Idaho |
| 1935 Residence (City) | Malad City Village |
| 1935 Residence (County) | Oneida |
| Highest Grade | 5 |
| 1935 Residence | Same place |
| 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 Leon Williams across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Leon Williams
Son · 1940 · age 13 · b. ~1927 · Idaho
★ You are viewing this record
Sibling
Percy Williams
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Claude Williams
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thayne Williams
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Glen Williams
Sibling · 1940 · age 22
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 — Oneida-County, Idaho
Open full size
1940 US Federal Census — Oneida-County, Idaho
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00752-00062)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | David W. Dredge | 20 | Son | Sheep Stock Man | Idaho |
| 2 | Edward G. Williams | 50 | Head | Farmer | Idaho |
| 3 | Martha Williams | 50 | Wife | — | Idaho |
| 4 | Glen A. C. Williams | 22 | Son | — | Idaho |
| 5 | Claude Williams | 20 | Son | Farmer | Idaho |
| 6 | Thayne Williams | 17 | Son | — | Idaho |
| 7 | Leon Williams THIS PERSON | 13 | Son | — | Idaho |
| 8 | Percy Williams | 10 | Son | — | Idaho |
| 9 | John Paul Caldwell | 28 | Head | Farmer | Idaho |
| 10 | Faye Caldwell | 28 | Wife | — | Idaho |
| 11 | Evel Jean Caldwell | 3 | Daughter | — | Idaho |
| 12 | Gaylene Caldwell | 0 | Daughter | — | Idaho |
| 13 | Dan Williams | 26 | Head | Farmer | Idaho |
| 14 | Pearl Williams | 27 | Wife | Teacher | Idaho |
| 15 | G. Merlin Ward | 39 | Head | Sheep Man | Utah |
| 16 | Viola Ward | 35 | Wife | — | Idaho |
| 17 | Melba Ward | 14 | Daughter | — | Idaho |
| 18 | Betty Jean Ward | 13 | Daughter | — | Idaho |
| 19 | Neva Ward | 10 | Daughter | — | Idaho |
| 20 | Lois Ward | 6 | Daughter | — | Idaho |
| 21 | Jess N. Ward | 65 | Head | Sheep Man | Utah |
| 22 | Julia Ward | 71 | Wife | — | Utah |
| 23 | La Verne Ward | 43 | Daughter | — | Idaho |
| 24 | Elden Ward | 16 | Son | — | Idaho |
| 25 | Elmer Ward | 37 | Head | Farmer | Idaho |
| 26 | Susan Ward | 37 | Wife | — | Idaho |
| 27 | Elmer Jr. Ward | 19 | Son | Farmer | Idaho |
| 28 | Helen Ab. Ward | 17 | Daughter | — | Idaho |
| 29 | Nelda Ward | 16 | Daughter | — | Idaho |
| 30 | Aileen Ward | 11 | Daughter | — | Idaho |
| 31 | Paul Ward | 5 | Son | — | Idaho |
| 32 | Alice Thomas | 71 | Head | Nurse | Idaho |
| 33 | Alice A. Thomas | 43 | Daughter | — | Idaho |
| 34 | D. Dredge Thomas | 50 | Head | Farmer | Idaho |
| 35 | Sarah Thomas | 44 | Wife | — | Idaho |
| 36 | Grant Thomas | 20 | Son | Farmer | Idaho |
| 37 | Maurice Thomas | 16 | Son | — | Idaho |
| 38 | Maurine Thomas | 16 | Daughter | — | Idaho |
| 39 | Joe Ward | 70 | Head | Sheep Stock Raiser | Utah |
| 40 | Annie E. Ward | 44 | Wife | — | Idaho |
Related Census Records
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)