RT
Ralph Thomas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Walworth-County, Wisconsin
Our Model Tree links this Ralph Thomas across the 1920, 1930 and 1940 US Censuses in Walworth-County, Wisconsin (XGBoost, ~Confirmed) — first a head (b.~1891), then head of a 3-person household.
Age 49
b. ~1891
Male
Head
Born: Ohio
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Walworth-County, Wisconsin |
| Surname | Thomas |
| Given Name | Ralph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Elkhorn |
| 1935 Residence (County) | Walworth |
| Additional Details | |
| Occupation | Heating & Plumbing |
| Industry | Contractor |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 348 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Heating & Plumbing |
| Township / Ward | Elkhorn |
| Est. Birth Year | ~1891 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ralph | Age | Birth yr |
|---|---|---|---|---|
| Leone Thomas | Spouse | — | 50 | ~1890 |
| Ralph Thomas | Head | — | 49 | ~1891 |
| Norman Thomas | Son | — | 16 | ~1924 |
Census Appearances
1920
Walworth, Wisconsin
Head, age 28
Walworth, Wisconsin · implied b. ~1892 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Ralph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Indiana |
| Occupation | Grinder |
| Industry | General Work |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Walworth, Wisconsin
Head, age 39
Walworth, Wisconsin · implied b. ~1891 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Ralph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Ohio |
| Age at First Marriage | 21 |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Indiana |
| Occupation | Plumber |
| Industry | Plumber Shop |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Veteran | R |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Walworth-County, Wisconsin
Head, age 49
Walworth-County, Wisconsin · implied b. ~1891 — 3 household members
| Surname | Thomas |
| Given Name | Ralph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Elkhorn |
| 1935 Residence (County) | Walworth |
| Occupation | Heating & Plumbing |
| Industry | Contractor |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 348 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 Ralph Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Ralph Thomas
Head · 1940 · age 49 · b. ~1891 · Wisconsin
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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 — Walworth-County, Wisconsin
Open full size
1940 US Federal Census — Walworth-County, Wisconsin
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-04531-00536)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Vera Cory | 47 | Wife | — | Wisconsin |
| 42 | Roy Cory | 41 | Head | Proprietor | Wisconsin |
| 43 | Esther Cory | 39 | Wife | Saleswoman | Wisconsin |
| 44 | William M. Ward | 28 | Head | Proprietor | Wisconsin |
| 45 | Dorothy Ward | 25 | Wife | — | Wisconsin |
| 46 | Mary Ann Ward | 3 | Daughter | — | Wisconsin |
| 47 | William Ward | 2 | Son | — | Wisconsin |
| 48 | Mildred Sommers | 18 | Maid | Housework | Wisconsin |
| 49 | Eugene Penney | 54 | Head | Salesman | Wisconsin |
| 50 | Rosa Mayme Penney | 49 | Sister | — | Wisconsin |
| 51 | Theodore Wallman | 78 | Head | — | Wisconsin |
| 52 | Jessie E. Wallman | 72 | Wife | — | Wisconsin |
| 53 | Theodora Wallman | 40 | Daughter | — | Wisconsin |
| 54 | Howard E. Wallman | 31 | Son | Painter | Wisconsin |
| 55 | Marvin Mason | 34 | Head | Asst Cashier | Wisconsin |
| 56 | Margery Mason | 33 | Wife | — | Wisconsin |
| 57 | James D. Mason | 2 | Son | — | Wisconsin |
| 58 | George Morris | 63 | Head | — | Wisconsin |
| 59 | Ellen Morris | 39 | Wife | Teacher | Wisconsin |
| 60 | Azell Morris | 25 | Son | Chemist | Wisconsin |
| 61 | George B. Dunlap | 83 | Father-in-law | — | Wisconsin |
| 62 | Ralph Thomas THIS PERSON | 49 | Head | Heating & Plumbing | Ohio |
| 63 | Leone Thomas | 50 | Wife | — | Illinois |
| 64 | Norman Thomas | 16 | Son | — | Wisconsin |
| 65 | Claude Eames | 39 | Head | Editor | Wisconsin |
| 66 | Alene Eames | 39 | Wife | — | Wisconsin |
| 67 | Donna Jean Eames | 14 | Daughter | — | Wisconsin |
| 68 | Frank Eames | 10 | Son | — | Wisconsin |
| 69 | Dana Laach | 56 | Head | — | Ohio |
| 70 | Severt Sather | 32 | Son-in-law | Wheelman | Norway |
| 71 | Edna Sather | 27 | Daughter | — | Wisconsin |
| 72 | Harry Schaffer | 39 | Head | Manager | Illinois |
| 73 | Siegbert Goldschmidt | 13 | Ward | — | Germany |
| 74 | Isalow Goldschmidt | 15 | Ward | — | Germany |
| 75 | Howard Pfaffenberger | 42 | Head | Proprietor | Illinois |
| 76 | Ethel Pfaffenberger | 43 | Wife | — | Wisconsin |
| 77 | Eleanor Pfaffenberger | 10 | Daughter | — | Wisconsin |
| 78 | Patricia Ann Pfaffenberger | 8 | Daughter | — | Wisconsin |
| 79 | Ruth Tenpenny | 16 | Maid | Maid | Wisconsin |
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)