NT
Nancy Thomas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lasalle-County, Illinois
Our Model Tree links this Nancy Thomas across the 1930 and 1940 US Censuses in Lasalle-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1917), then head of a 6-person household.
Age 23
b. ~1917
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lasalle-County, Illinois |
| Surname | Thomas |
| Given Name | Nancy |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Marseilles City |
| 1935 Residence (County) | La Salle |
| Additional Details | |
| Occupation | paper maker |
| Class of Worker | PW |
| Hours Worked | 26 |
| Income (1939) | 496 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Paper Maker |
| Township / Ward | Marseilles City |
| Est. Birth Year | ~1917 |
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 Nancy | Age | Birth yr |
|---|---|---|---|---|
| Samuel Thomas | Son | — | 21 | ~1919 |
| Julian Thomas | Son | — | 16 | ~1924 |
| Nancy Thomas | Son | — | 23 | ~1917 |
| Fannie Thomas | Daughter | — | 14 | ~1926 |
| Lena Thomas | Spouse | — | 49 | ~1891 |
| Antone Thomas | Head | — | 52 | ~1888 |
Census Appearances
1930
Lasalle, Illinois
Son, age 13
Lasalle, Illinois · implied b. ~1917 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Nunzio |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Italy |
| Mother's Birthplace | Italy |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Lasalle-County, Illinois
Son, age 23
Lasalle-County, Illinois · implied b. ~1917 — 6 household members
| Surname | Thomas |
| Given Name | Nancy |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Marseilles City |
| 1935 Residence (County) | La Salle |
| Occupation | paper maker |
| Class of Worker | PW |
| Hours Worked | 26 |
| Income (1939) | 496 |
| Highest Grade | No 4 |
| 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 Nancy Thomas across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Nancy Thomas
Son · 1940 · age 23 · b. ~1917 · Illinois
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Sibling
Julian Thomas
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Samuel Thomas
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Fannie Thomas
Sibling · 1940 · age 14
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 — Lasalle-County, Illinois
Open full size
1940 US Federal Census — Lasalle-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00833-00611)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Gaylord Einhart | 9 | Son | — | Illinois |
| 2 | Robert Smith | 50 | Head | Electrician | Illinois |
| 3 | Bessie Smith | 45 | Wife | Housewife | Illinois |
| 4 | Robert Jr. Smith | 19 | Son | Truck Driver | Illinois |
| 5 | Fred Smith | 17 | Son | Helper | Illinois |
| 6 | Beatrice Smith | 13 | Daughter | — | Illinois |
| 7 | Louis Bohler | None | — | — | — |
| 8 | Alma Bohler | None | — | — | — |
| 9 | Clara Smith | 48 | Head | Housewife | Illinois |
| 10 | Edward Smith | 11 | Son | — | Illinois |
| 11 | Celestine Smith | 11 | Daughter | — | Illinois |
| 12 | John Triglione | 64 | Head | Unable To Work | Italy |
| 13 | Antonia Triglione | 63 | Wife | Housewife | Italy |
| 14 | Domenic Pellegrini | 35 | Head | Driller | Italy |
| 15 | Virginia Pellegrini | 30 | Daughter | Housewife | Illinois |
| 16 | Vincent Pellegrini | 6 | Grandson | — | Illinois |
| 17 | Pellegrini | 2 | Granddaughter | — | Illinois |
| 18 | Mabel Pray | 38 | Head | Housewife | Illinois |
| 19 | George Pray | 4 | Son | — | Illinois |
| 20 | Rose Mary Pray | 1 | Daughter | — | Illinois |
| 21 | Laverne | 16 | Son | Student | Illinois |
| 22 | Antone Thomas | 52 | Head | Helper | Italy |
| 23 | Lena Thomas | 49 | Wife | Housewife | Italy |
| 24 | Nancy Thomas THIS PERSON | 23 | Son | Paper Maker | Illinois |
| 25 | Samuel Thomas | 21 | Son | Helper | Illinois |
| 26 | Julian Thomas | 16 | Son | Helper | Illinois |
| 27 | Fannie Thomas | 14 | Daughter | Student | Illinois |
| 28 | George Dardlow | 58 | Head | Rayon Worker | Roumania |
| 29 | Florence Dardlow | 48 | Wife | Housewife | Roumania |
| 30 | Viola Dardlow | 18 | Daughter | Student | Illinois |
| 31 | George Chobba | 49 | Head | Watchman | Roumania |
| 32 | Margaret Chobba | 56 | Wife | Housewife | Illinois |
| 33 | John Babcock | 22 | Head | Absent | Illinois |
| 34 | Edward Babcock | 30 | Brother | Absent | Illinois |
| 35 | Robert Cunningham | 34 | Head | Unskilled Lab | Illinois |
| 36 | Herminia Cunningham | 26 | Wife | Unable To Work | Illinois |
| 37 | Mary R. Cunningham | 5 | Daughter | — | Illinois |
| 38 | Robert Cunningham | 3 | Son | — | Illinois |
| 39 | Cunningham | 1 | Son | — | Illinois |
| 40 | Louis | 68 | Father | Unable To Work | Roumania |
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)