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Marion Thomas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mills-County, Iowa
Our Model Tree links this Marion Thomas across the 1930 and 1940 US Censuses in Mills-County, Iowa (XGBoost, ~Confirmed) — first a son (b.~1922), then head of a 8-person household.
Age 18
b. ~1922
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Mills-County, Iowa |
| Surname | Thomas |
| Given Name | Marion |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Indian Creek Township |
| Additional Details | |
| Occupation | Farm Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 380 |
| Highest Grade | No 8 |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farm Laborer |
| Township / Ward | Indian Creek Township |
| Est. Birth Year | ~1922 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Marion | Age | Birth yr |
|---|---|---|---|---|
| Marion Thomas | Son | — | 18 | ~1922 |
| Max Thomas | Son | — | 11 | ~1929 |
| Clyde Thomas | Son | — | 17 | ~1923 |
| Meryl Thomas | Head | — | 44 | ~1896 |
| Kenneth Thomas | Son | — | 21 | ~1919 |
| Billie Thomas | Son | — | 15 | ~1925 |
| Keith Thomas | Son | — | 2 | ~1938 |
| Lena Thomas | Spouse | — | 39 | ~1901 |
Census Appearances
1930
Mills, Iowa
Son, age 8
Mills, Iowa · implied b. ~1922 — 25 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Marion |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Mills-County, Iowa
Son, age 18
Mills-County, Iowa · implied b. ~1922 — 8 household members
| Surname | Thomas |
| Given Name | Marion |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Indian Creek Township |
| Occupation | Farm Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 380 |
| Highest Grade | No 8 |
| 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 Marion Thomas across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Marion Thomas
Son · 1940 · age 18 · b. ~1922 · Iowa
★ You are viewing this record
Sibling
Clyde Thomas
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Keith Thomas
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kenneth Thomas
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Max Thomas
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Billie Thomas
Sibling · 1940 · age 15
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-t0627-01183-00250)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Thos. R. Ellison | 66 | Head | Farmer | Missouri |
| 2 | Segrid Ellison | 62 | Wife | — | Missouri |
| 3 | Frank Porter | 34 | Head | Farm Laborer | Illinois |
| 4 | Virginia Porter | 30 | Wife | — | Iowa |
| 5 | Diane Porter | 9 | Son | — | Iowa |
| 6 | Dolores Porter | 6 | Daughter | — | Iowa |
| 7 | Marion Porter | 3 | Son | — | Iowa |
| 8 | John Jones | 51 | Lodger | Farmer | Iowa |
| 9 | Glen Snodgrass | 46 | Head | Farmer | Iowa |
| 10 | Fern Snodgrass | 41 | Wife | — | Iowa |
| 11 | Dale Budile | 20 | Hired Man | Farm Laborer | Iowa |
| 12 | Bert Combs | 63 | Head | Farmer | Illinois |
| 13 | Geraldine Combs | 31 | Daughter | — | Iowa |
| 14 | Hobart Hampton | 42 | Hired Man | Farm Laborer | Missouri |
| 15 | Meryl Thomas | 44 | Head | Farm Laborer | Iowa |
| 16 | Lena Mae Thomas | 39 | Wife | — | Iowa |
| 17 | Kenneth Thomas | 21 | Son | Farm Laborer | Iowa |
| 18 | Marion Thomas THIS PERSON | 18 | Son | Farm Laborer | Iowa |
| 19 | Clyde Thomas | 17 | Son | — | Iowa |
| 20 | Billie Thomas | 15 | Son | — | Iowa |
| 21 | Max Thomas | 11 | Son | — | Iowa |
| 22 | Keith Thomas | 2 | Son | — | Iowa |
| 23 | Gordon Hascall | 27 | Head | Farmer | Iowa |
| 24 | Carolyn Hascall | 25 | Wife | — | Iowa |
| 25 | Edwin Hascall | 6 | Son | — | Iowa |
| 26 | Grace Hascall | 1 | Daughter | — | Iowa |
| 27 | George Sr. Hascall | 53 | Head | Farmer | Nebraska |
| 28 | Grace Hascall | 54 | Wife | — | Iowa |
| 29 | George Jr. Hascall | 25 | Head | Farmer | Iowa |
| 30 | Leona Hascall | 22 | Wife | — | Iowa |
| 31 | Clara Huntsman | 69 | Head | — | Iowa |
| 32 | Margaret Strayer | 66 | Head | — | Tennessee |
| 33 | Amy Huntsman | 67 | Head | — | Iowa |
| 34 | Guy Huntsman | 32 | Son | Delivery Man | Iowa |
| 35 | Vivian Huntsman | 25 | Daughter | — | Iowa |
| 36 | Harold Smith | 35 | Head | Farmer | Indiana |
| 37 | Fay Smith | 33 | Wife | — | Iowa |
| 38 | Russell Smith | 10 | Son | — | Iowa |
| 39 | Kathryn Smith | 8 | Daughter | — | Iowa |
| 40 | William Smith | 4 | Son | — | 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)