EL
Eva Lewis — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Big-Horn-County, Wyoming
Our Model Tree links this Eva Lewis across the 1930 and 1940 US Censuses in Big-Horn-County, Wyoming (XGBoost, ~Confirmed) — first a daughter (b.~1916), then head of a 7-person household.
Age 24
b. ~1916
Female
Daughter
Born: Wyoming
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Big-Horn-County, Wyoming |
| Surname | Lewis |
| Given Name | Eva |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Wyoming |
| 1935 Residence (City) | Some House |
| Additional Details | |
| Occupation | Daughter-in-law |
| Class of Worker | PW |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Wyoming |
| Birth State | Wyoming |
| Birth Country | United States |
| Birthplace (normalized) | wyoming |
| Occupation | Daughter-In-Law |
| Township / Ward | Cowley Town |
| Est. Birth Year | ~1916 |
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 Eva | Age | Birth yr |
|---|---|---|---|---|
| James Mcdermott | Other | — | 7 | ~1933 |
| Claude Lewis | Son | — | 15 | ~1925 |
| Louise Mcdermott | Daughter | — | 26 | ~1914 |
| Claude Lewis | Head | — | 53 | ~1887 |
| Eva Lewis | Daughter | — | 24 | ~1916 |
| Croft Lewis | Son | — | 17 | ~1923 |
| Lattie Lewis | Spouse | — | 50 | ~1890 |
Census Appearances
1930
Big Horn, …
Daughter, age 14
Big Horn, Wyoming · implied b. ~1916 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lewis |
| Given Name | Eva |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Wyoming |
| Father's Birthplace | Utah |
| Mother's Birthplace | Utah |
| Can Read/Write | Yes |
| Birth State | Wyoming |
| Birth Country | United States |
| Birthplace (normalized) | wyoming |
1940
Big-Horn-County, Wyoming
Daughter, age 24
Big-Horn-County, Wyoming · implied b. ~1916 — 7 household members
| Surname | Lewis |
| Given Name | Eva |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Wyoming |
| 1935 Residence (City) | Some House |
| Occupation | Daughter-in-law |
| Class of Worker | PW |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Wyoming |
| Birth State | Wyoming |
| Birth Country | United States |
| Birthplace (normalized) | wyoming |
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 Eva Lewis across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Eva Lewis
Daughter · 1940 · age 24 · b. ~1916 · Wyoming
★ You are viewing this record
Sibling
Louise Mcdermott
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Claude Lewis
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Croft Lewis
Sibling · 1940 · age 17
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 — Big-Horn-County, Wyoming
Open full size
1940 US Federal Census — Big-Horn-County, Wyoming
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04568-00812)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Jesse W. Crosby | 25 | Son | Carpenter | Wyoming |
| 2 | Rodney W. Crosby | 22 | Son | Farmer | Wyoming |
| 3 | Jeanne Crosby | 21 | Daughter | — | Wyoming |
| 4 | Robert Crosby | 18 | Son | — | Montana |
| 5 | Betty Jo Crosby | 16 | Daughter | — | Montana |
| 6 | Gerald Welch | 5 | Nephew | — | Wyoming |
| 7 | Niels Mortensen | 75 | Head | — | Utah |
| 8 | Ellen Mortensen | 72 | Wife | — | Utah |
| 9 | Albert Benson | 19 | Boarder | Laborer | Wyoming |
| 10 | Joseph Meeks | 65 | Head | Care Taker | Utah |
| 11 | Dora Meeks | 63 | Wife | — | Utah |
| 12 | Richard Meeks | 34 | Son | Farmer | Wyoming |
| 13 | Samuel Wilcock | 69 | Head | Farmer | Utah |
| 14 | Francette Wilcock | 69 | Wife | — | Utah |
| 15 | Ford Welch | 27 | Head | Farmer | Wyoming |
| 16 | Ruth Welch | 22 | Wife | — | Utah |
| 17 | Ford Welch | 3 | Son | — | Wyoming |
| 18 | Michael Welch | 1 | Son | — | Wyoming |
| 19 | Woodruff Welch | 34 | Head | Farmer | Wyoming |
| 20 | Ilah Welch | 33 | Wife | — | Utah |
| 21 | Holden Welch | 54 | Head | Farmer | Utah |
| 22 | Ora Welch | 33 | Wife | — | Wyoming |
| 23 | Scott Welch | 15 | Son | — | Wyoming |
| 24 | Alice Welch | 13 | Daughter | — | Wyoming |
| 25 | Ilene Welch | 11 | Daughter | — | Wyoming |
| 26 | John Welch | 6 | Son | — | Wyoming |
| 27 | Louise Welch | 3 | Daughter | — | Wyoming |
| 28 | Benjamin B. Smith | 70 | Head | Care Taker | Utah |
| 29 | Claudia Smith | 65 | Wife | — | Utah |
| 30 | Wallace Rollins | 31 | Head | Superintendent | Utah |
| 31 | Grace Rollins | 26 | Wife | — | Wyoming |
| 32 | Myrna Rollins | 6 | Daughter | — | Wyoming |
| 33 | John Rollins | 4 | Son | — | Wyoming |
| 34 | Claude A. Lewis | 53 | Head | Sheep Man | Utah |
| 35 | Lattie Lewis | 50 | Wife | — | Utah |
| 36 | Croft Lewis | 17 | Son | — | Wyoming |
| 37 | Eva Lewis THIS PERSON | 24 | Daughter | Daughter-In-Law | Wyoming |
| 38 | Claude A. Lewis | 15 | Son | — | Wyoming |
| 39 | Louise Mcdermott | 26 | Daughter | Clerk | Wyoming |
| 40 | James Mcdermott | 7 | Grandson | — | Wyoming |
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)