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Thelma Thomas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hancock-County, Illinois
Our Model Tree links this Thelma Thomas across the 1930 and 1940 US Censuses in Hancock-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 10-person household.
Age 11
b. ~1929
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hancock-County, Illinois |
| Surname | Thomas |
| Given Name | Thelma M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Hancock |
| Additional Details | |
| Highest Grade | 4 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Pilot Grove Twp |
| Est. Birth Year | ~1929 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thelma | Age | Birth yr |
|---|---|---|---|---|
| Hubert Thomas | Head | — | 48 | ~1892 |
| Wayne Thomas | Son | — | 17 | ~1923 |
| Jan Thomas | Son | — | 2 | ~1938 |
| Loren Thomas | Son | — | 3 | ~1937 |
| Goldie Thomas | Spouse | — | 40 | ~1900 |
| Byard Thomas | Son | — | 9 | ~1931 |
| Keith Thomas | Son | — | 13 | ~1927 |
| Lloyd Thomas | Son | — | 19 | ~1921 |
| Vernon Thomas | Son | — | 16 | ~1924 |
| Thelma Thomas | Daughter | — | 11 | ~1929 |
Census Appearances
1930
Hancock, Illinois
Daughter, age 1
Hancock, Illinois · implied b. ~1929 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Thelma M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Hancock-County, Illinois
Daughter, age 11
Hancock-County, Illinois · implied b. ~1929 — 10 household members
| Surname | Thomas |
| Given Name | Thelma M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Hancock |
| Highest Grade | 4 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Thelma Thomas across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Thelma Thomas
Daughter · 1940 · age 11 · b. ~1929 · Illinois
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Sibling
Keith Thomas
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Byard Thomas
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jan Thomas
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Wayne Thomas
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Loren Thomas
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Vernon Thomas
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lloyd Thomas
Sibling · 1940 · age 19
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 — Hancock-County, Illinois
Open full size
1940 US Federal Census — Hancock-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00810-00527)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Hubert Thomas | 48 | Head | Farmer | Kentucky |
| 42 | Goldie Thomas | 40 | Wife | — | Kentucky |
| 43 | Lloyd R. Thomas | 19 | Son | Laborer | Illinois |
| 44 | Wayne A. Thomas | 17 | Son | Laborer | Illinois |
| 45 | Vernon W. Thomas | 16 | Son | Laborer | Illinois |
| 46 | Keith E. Thomas | 13 | Son | — | Illinois |
| 47 | Thelma M. Thomas THIS PERSON | 11 | Daughter | — | Illinois |
| 48 | Byard L. Thomas | 9 | Son | — | Illinois |
| 49 | Loren E. Thomas | 3 | Son | — | Illinois |
| 50 | Jan E. Thomas | 2 | Son | — | Illinois |
| 51 | Emmitt D. Brunson | 46 | Head | Farmer | Illinois |
| 52 | Iva Brunson | 48 | Wife | — | Illinois |
| 53 | Hattie Davis | 72 | Mother-in-law | — | Illinois |
| 54 | Samuel D. Mccord | 68 | Head | Farmer | Illinois |
| 55 | Myrtle Mccord | 65 | Wife | — | Illinois |
| 56 | Goldie Mccord | 37 | Daughter | Housekeeper | Illinois |
| 57 | Frank Mccord | 26 | Son | Laborer | Illinois |
| 58 | Earl Carlson | 38 | Head | Farmer | Illinois |
| 59 | Jessie D. Carlson | 35 | Wife | — | Illinois |
| 60 | Dale Carlson | 11 | Son | — | Illinois |
| 61 | Darlene Carlson | 10 | Daughter | — | Illinois |
| 62 | Joan Carlson | 8 | Daughter | — | Illinois |
| 63 | Richard Carlson | 2 | Son | — | Illinois |
| 64 | Fred Brown | 33 | Head | Farmer | Virginia |
| 65 | Beulah Brown | 30 | Wife | — | Virginia |
| 66 | Edith Brown | 13 | Daughter | — | Kentucky |
| 67 | Evelyn Brown | 11 | Daughter | — | Kentucky |
| 68 | Eva Brown | 9 | Daughter | — | Kentucky |
| 69 | Ina Brown | 8 | Daughter | — | Kentucky |
| 70 | Doris Brown | 3 | Daughter | — | Illinois |
| 71 | Ruby D. Black | 27 | Head | Farmer | Missouri |
| 72 | Anna Black | 24 | Wife | — | Ohio |
| 73 | Ruby Jr. Black | 4 | Son | — | Illinois |
| 74 | Charles Black | 2 | Son | — | Illinois |
| 75 | Richard Black | 0 | Son | — | Illinois |
| 76 | George D. Brown | 31 | Head | Farmer | Kentucky |
| 77 | Frank Brown | 28 | Brother | — | Kentucky |
| 78 | Margaret Brown | 56 | Mother | — | Kentucky |
| 79 | John Doran | 57 | Head | Farmer | Illinois |
| 80 | Kathryn Doran | 47 | Wife | — | Illinois |
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)