ET
Ernest Thomas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Shelby-County, Iowa
Our Model Tree links this Ernest Thomas across the 1920, 1930 and 1940 US Censuses in Shelby-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1884), then head of a 6-person household.
Age 56
b. ~1884
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Shelby-County, Iowa |
| Surname | Thomas |
| Given Name | Ernest O. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Grove Township |
| 1935 Residence (County) | Shelby |
| Additional Details | |
| Occupation | Farming |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | H-2 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farming |
| Township / Ward | Grove Township |
| Est. Birth Year | ~1884 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ernest | Age | Birth yr |
|---|---|---|---|---|
| Ernest Thomas | Head | — | 56 | ~1884 |
| Lola Thomas | Daughter | — | 15 | ~1925 |
| Minna Thomas | Spouse | — | 43 | ~1897 |
| Lola Thomas | Daughter | — | 18 | ~1922 |
| Evelyn Thomas | Daughter | — | 19 | ~1921 |
| Lucille Thomas | Daughter | — | 11 | ~1929 |
Census Appearances
1920
Shelby, Iowa
Head, age 36
Shelby, Iowa · implied b. ~1884 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | E E |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Occupation | Farmer |
| Industry | general farm |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Shelby, Iowa
Head, age 46
Shelby, Iowa · implied b. ~1884 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Ernest F |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 26 |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Radio Set | R |
| Veteran | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Shelby-County, Iowa
Head, age 56
Shelby-County, Iowa · implied b. ~1884 — 6 household members
| Surname | Thomas |
| Given Name | Ernest O. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Grove Township |
| 1935 Residence (County) | Shelby |
| Occupation | Farming |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | H-2 |
| 1935 Residence | Iowa |
| 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 Ernest 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
Ernest Thomas
Head · 1940 · age 56 · b. ~1884 · Iowa
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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 — Shelby-County, Iowa
Open full size
1940 US Federal Census — Shelby-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01204-00157)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Calvin A. Evans | 31 | Head | Farming | Iowa |
| 42 | Vera Evans | 27 | Wife | — | Iowa |
| 43 | Virginia Evans | 5 | Daughter | — | Iowa |
| 44 | William Evans | 3 | Son | — | Iowa |
| 45 | Vella Mccarthy | 42 | Wife | Farming | Pennsylvania |
| 46 | John Mccarthy | 11 | Son | Farming | Iowa |
| 47 | Clarence Q. Ferguson | 62 | Head | Farming | Iowa |
| 48 | Laura Ferguson | 58 | Wife | — | Iowa |
| 49 | Billy M. Ferguson | 22 | Son | Farming | Iowa |
| 50 | Gertrude Ferguson | 24 | Daughter-in-law | — | Iowa |
| 51 | George D. Mccord | 54 | Head | Farming | Iowa |
| 52 | Vera Mccord | 37 | Wife | — | Iowa |
| 53 | Helen Ina Mccord | 17 | Daughter | — | Iowa |
| 54 | Vesta Mccord | 15 | Daughter | — | Iowa |
| 55 | Arletta Mccord | 12 | Daughter | — | Iowa |
| 56 | Lyle Clair Mccord | 10 | Son | — | Iowa |
| 57 | Virginia Mccord | 8 | Daughter | — | Iowa |
| 58 | Carol Mccord | 6 | Daughter | — | Iowa |
| 59 | Harold Mccord | 5 | Son | — | Iowa |
| 60 | Ernest O. Thomas THIS PERSON | 56 | Head | Farming | Iowa |
| 61 | Minna Thomas | 43 | Wife | — | Iowa |
| 62 | Evelyn Thomas | 19 | Daughter | — | Iowa |
| 63 | Lola Thomas | 18 | Daughter | Farming | Iowa |
| 64 | Lola Thomas | 15 | Daughter | — | Iowa |
| 65 | Lucille Thomas | 11 | Daughter | — | Iowa |
| 66 | Albert Sr. Trimpe | 60 | Head | Farming | Indiana |
| 67 | Lena Trimpe | 56 | Wife | — | South Dakota |
| 68 | Helen Trimpe | 19 | Daughter | — | Iowa |
| 69 | Charlie A. Lahr | 43 | Head | Farming | Iowa |
| 70 | Julia Lahr | 33 | Wife | — | Iowa |
| 71 | Dorothy Lahr | 14 | Daughter | — | Iowa |
| 72 | Lyle Lahr | 13 | Son | — | Iowa |
| 73 | Dean Lahr | 10 | Son | — | Iowa |
| 74 | Donna Jean Lahr | 5 | Daughter | — | Iowa |
| 75 | Grace Lahr | 1 | Daughter | — | Iowa |
| 76 | Albert Jr. Trimpe | 31 | Head | Farmer | Iowa |
| 77 | Ruth Trimpe | 31 | Wife | — | Iowa |
| 78 | Lance William Trimpe | 1 | Son | — | Iowa |
| 79 | Wesley H. Ten Eyck | 31 | Head | Farming | Iowa |
| 80 | Calista Ten Eyck | 25 | Wife | — | Iowa |
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)