AT
Agnes Thomas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Marion-County, Illinois
Our Model Tree links this Agnes Thomas across the 1930 and 1940 US Censuses in Marion-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 10-person household.
Age 12
b. ~1928
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Illinois |
| Surname | Thomas |
| Given Name | Agnes May |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Sandoval Village |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Sandoval Village |
| Est. Birth Year | ~1928 |
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 Agnes | Age | Birth yr |
|---|---|---|---|---|
| Charlotte Thomas | Daughter | — | 3 | ~1937 |
| Edward Thomas | Head | — | 35 | ~1905 |
| Edward Thomas | Son | — | 5 | ~1935 |
| Catherine Thomas | Spouse | — | 31 | ~1909 |
| Billy Thomas | Son | — | 15 | ~1925 |
| Rita Thomas | Daughter | — | 1 | ~1939 |
| Edith Thomas | Daughter | — | 7 | ~1933 |
| Marjorie Thomas | Daughter | — | 11 | ~1929 |
| Rose Thomas | Daughter | — | 6 | ~1934 |
| Agnes Thomas | Daughter | — | 12 | ~1928 |
Census Appearances
1930
Marion, Illinois
Daughter, age 2
Marion, Illinois · implied b. ~1928 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Agnes M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Missouri |
| Can Read/Write | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Marion-County, Illinois
Daughter, age 12
Marion-County, Illinois · implied b. ~1928 — 10 household members
| Surname | Thomas |
| Given Name | Agnes May |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Sandoval Village |
| 1935 Residence (County) | Marion |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| 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 Agnes Thomas across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Agnes Thomas
Daughter · 1940 · age 12 · b. ~1928 · Illinois
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Sibling
Edith Thomas
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Thomas
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Thomas
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Billy Thomas
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marjorie Thomas
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rose Thomas
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charlotte Thomas
Sibling · 1940 · age 3
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 — Marion-County, Illinois
Open full size
1940 US Federal Census — Marion-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00853-00533)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Edwin Ross | 40 | Head | Laborer | Illinois |
| 2 | Isabelle S Ross | 39 | Wife | — | Illinois |
| 3 | Mary Gibson | 70 | Head | — | Illinois |
| 4 | John Holick | 78 | Head | — | Germany |
| 5 | Annie Holick | 63 | Wife | — | Germany |
| 6 | Jack S Davis | 40 | Head | Laborer | Texas |
| 7 | Mabel Davis | 36 | Wife | — | Texas |
| 8 | Ted Davis | 13 | Son | — | Texas |
| 9 | George Bailey | 45 | Head | Laborer | Kentucky |
| 10 | Mary Bailey | 40 | Wife | — | Kentucky |
| 11 | Betty Bailey | 14 | Daughter | — | Kentucky |
| 12 | Wanda Jean Bailey | 5 | Daughter | — | Kentucky |
| 13 | Jerry Bell | 50 | Head | Carpenter | Illinois |
| 14 | Frances Bell | 52 | Wife | — | Illinois |
| 15 | Joe Bell | 27 | Son | Laborer | Illinois |
| 16 | William Bell | 20 | Son | Laborer | Illinois |
| 17 | Norma Bell | 17 | Daughter | — | Illinois |
| 18 | Harry Poole | 63 | Head | Laborer | Illinois |
| 19 | Jessie S Poole | 57 | Wife | — | Illinois |
| 20 | Mona Harris | 14 | Granddaughter | — | Illinois |
| 21 | Everett Latham | 24 | Head | Driller | Oklahoma |
| 22 | Mary Ella Latham | 23 | Wife | — | Oklahoma |
| 23 | Nina Frances Latham | 4 | Daughter | — | Oklahoma |
| 24 | Johnnie Latham | 2 | Son | — | Oklahoma |
| 25 | Edward Thomas | 35 | Head | Owner | Illinois |
| 26 | Catherine Thomas | 31 | Wife | Owner | Illinois |
| 27 | Billy Joe Thomas | 15 | Son | — | Illinois |
| 28 | Agnes May Thomas THIS PERSON | 12 | Daughter | — | Illinois |
| 29 | Marjorie Lee Thomas | 11 | Daughter | — | Illinois |
| 30 | Edith E Thomas | 7 | Daughter | — | Illinois |
| 31 | Rose Mary Thomas | 6 | Daughter | — | Illinois |
| 32 | Edward Jr Thomas | 5 | Son | — | Illinois |
| 33 | Charlotte Thomas | 3 | Daughter | — | Illinois |
| 34 | Rita Ann Thomas | 1 | Daughter | — | Illinois |
| 35 | Charles Marr | 35 | Head | Laborer | Illinois |
| 36 | Flora Marr | 29 | Wife | — | Illinois |
| 37 | Donald Marr | 9 | Son | — | Illinois |
| 38 | Jerry E Marr | 4 | Son | — | Illinois |
| 39 | James Marr | 4 | Son | — | Illinois |
| 40 | Charles Jr Marr | 2 | Son | — | 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)