ET
Ellen Thomas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mills-County, Iowa
Our Model Tree links this Ellen Thomas across the 1930 and 1940 US Censuses in Mills-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 12-person household.
Age 13
b. ~1927
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Mills-County, Iowa |
| Surname | Thomas |
| Given Name | Ellen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Oak Twp. |
| 1935 Residence (County) | Mills |
| Additional Details | |
| Highest Grade | No 7 |
| 1935 Residence | Same House |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Oak Twp |
| 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.
12 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ellen | Age | Birth yr |
|---|---|---|---|---|
| Jahnel Thomas | Son | — | 1 | ~1939 |
| Alma Thomas | Daughter | — | 11 | ~1929 |
| Edward Thomas | Head | — | 53 | ~1887 |
| Vernard Thomas | Son | — | 11 | ~1929 |
| Marlin Thomas | Son | — | 4 | ~1936 |
| Mattie Thomas | Daughter | — | 6 | ~1934 |
| Alice Thomas | Daughter | — | 10 | ~1930 |
| Betty Thomas | Daughter | — | 14 | ~1926 |
| Elden Thomas | Son | — | 8 | ~1932 |
| Lorraine Thomas | Daughter | — | 5 | ~1935 |
| Twyla Thomas | Spouse | — | 30 | ~1910 |
| Ellen Thomas | Daughter | — | 13 | ~1927 |
Census Appearances
1930
Mills, Iowa
Daughter, age 3
Mills, Iowa · implied b. ~1927 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Ellen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Mills-County, Iowa
Daughter, age 13
Mills-County, Iowa · implied b. ~1927 — 12 household members
| Surname | Thomas |
| Given Name | Ellen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Oak Twp. |
| 1935 Residence (County) | Mills |
| Highest Grade | No 7 |
| 1935 Residence | Same House |
| 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 Ellen Thomas across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Ellen Thomas
Daughter · 1940 · age 13 · b. ~1927 · Iowa
★ You are viewing this record
Sibling
Mattie Thomas
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lorraine Thomas
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jahnel Thomas
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Thomas
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marlin Thomas
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alma Thomas
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elden Thomas
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Thomas
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Vernard Thomas
Sibling · 1940 · age 11
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 — Mills-County, Iowa
Open full size
1940 US Federal Census — Mills-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01183-00359)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Donald Hockabout | 3 | Head | — | Iowa |
| 2 | William Vaughn | 50 | Head | Farming | Kansas |
| 3 | Georgia Vaughn | 52 | Wife | — | Iowa |
| 4 | Irvin Vaughn | 21 | Son | Laborer | Iowa |
| 5 | Coretta Vaughn | 18 | Daughter | Laborer | Iowa |
| 6 | Clarence Vaughn | 16 | Son | Laborer | Iowa |
| 7 | Virginia Vaughn | 15 | Daughter | Laborer | Iowa |
| 8 | Gerald Vaughn | 11 | Son | — | Iowa |
| 9 | Edward Thomas | 53 | Head | Farming | Iowa |
| 10 | Twyla Thomas | 30 | Wife | — | Iowa |
| 11 | Betty Thomas | 14 | Daughter | — | Iowa |
| 12 | Ellen Thomas THIS PERSON | 13 | Daughter | — | Iowa |
| 13 | Vernard Thomas | 11 | Son | — | Iowa |
| 14 | Alma Thomas | 11 | Daughter | — | Iowa |
| 15 | Alice Thomas | 10 | Daughter | — | Iowa |
| 16 | Elden Thomas | 8 | Son | — | Iowa |
| 17 | Mattie Thomas | 6 | Daughter | — | Iowa |
| 18 | Lorraine Thomas | 5 | Daughter | — | Iowa |
| 19 | Marlin Thomas | 4 | Son | — | Iowa |
| 20 | Jahnel Thomas | 1 | Son | — | Iowa |
| 21 | Ferdinand Boyce | 28 | Head | Farming | Iowa |
| 22 | Vera Boyce | 21 | Wife | — | Iowa |
| 23 | Marilyn M. Boyce | 2 | Daughter | — | Iowa |
| 24 | Effie Boyce | 65 | Mother | — | Iowa |
| 25 | Samuel Millsap | 68 | Head | Farming | Missouri |
| 26 | Anna Millsap | 66 | Wife | — | Missouri |
| 27 | Charley Millsap | 38 | Son | Laborer | Iowa |
| 28 | Roy Millsap | 36 | Son | Laborer | Iowa |
| 29 | Everett Millsap | 22 | Son | Laborer | Iowa |
| 30 | Ernest Boyce | 47 | Head | Farming | Iowa |
| 31 | Marie Boyce | 44 | Wife | — | Iowa |
| 32 | Mary Boyce | 16 | Daughter | — | Iowa |
| 33 | Sloan Murray | 27 | Head | Farming | Georgia |
| 34 | Beulah Murray | 31 | Wife | — | Iowa |
| 35 | Robert Murray | 2 | Son | — | Iowa |
| 36 | Mary Kathryn Murray | 1 | Daughter | — | Iowa |
| 37 | Henry Keith | 48 | Head | Farming | Missouri |
| 38 | Esther Keith | 40 | Wife | — | Missouri |
| 39 | Dwight Keith | 15 | Son | Laborer | Kansas |
| 40 | Wayne Keith | 13 | Son | — | Kansas |
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)