CT
Charles Thomas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Lake-County, Illinois
Our Model Tree links this Charles Thomas across the 1920, 1930 and 1940 US Censuses in Lake-County, Illinois (XGBoost, ~Confirmed), with identified parents Isaac & William — first a son (b.~1910), then head of a 9-person household.
Age 30
b. ~1910
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lake-County, Illinois |
| Surname | Thomas |
| Given Name | Charles |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Lake Bluff Village |
| 1935 Residence (County) | Lake |
| Additional Details | |
| Occupation | Clerk |
| Industry | Bank |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 266 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Clerk |
| Township / Ward | Lake Bluff Village |
| Est. Birth Year | ~1910 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Charles | Age | Birth yr |
|---|---|---|---|---|
| Helen Thomas | Daughter | — | 28 | ~1912 |
| Joan Joyce | Daughter | — | 13 | ~1927 |
| William Thomas | Head | — | 60 | ~1880 |
| Cora Fowler | Other | — | 27 | ~1913 |
| John Swenson | Other | — | 28 | ~1912 |
| Lucy Wood | Other | — | 67 | ~1873 |
| Gail Hansberg | Other | — | 13 | ~1927 |
| Charles Thomas | Son | — | 30 | ~1910 |
| Frida Thomas | Spouse | — | 57 | ~1883 |
Census Appearances
1920
Lake, Illinois
Son, age 12
Lake, Illinois · implied b. ~1908 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Charles |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Lake, Illinois
Son, age 22
Lake, Illinois · implied b. ~1908 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Charles |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | England |
| Mother's Birthplace | Sweden |
| Occupation | Clerk |
| Industry | Bank |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Lake-County, Illinois
Son, age 30
Lake-County, Illinois · implied b. ~1910 — 9 household members
| Surname | Thomas |
| Given Name | Charles |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Lake Bluff Village |
| 1935 Residence (County) | Lake |
| Occupation | Clerk |
| Industry | Bank |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 266 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| 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 Charles Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Isaac Thomas (~0.92 confidence) and father William Thomas (~0.92 confidence) and father William Thomas (~0.92 confidence) and mother Alice Thomas (~0.92 confidence) and mother Frida Thomas (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Isaac Thomas
b. ~1870
Source father
● Household
· direct · ~0.92
Father
William Thomas
b. ~1880
Source father
● Household
· direct · ~0.92
Father
William Thomas
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Alice Thomas
b. ~1868
Source mother
● Household
· direct · ~0.92
Mother
Frida Thomas
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Charles Thomas
Son · 1940 · age 30 · b. ~1910 · Illinois
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Sibling
Joan Joyce
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Thomas
Sibling · 1940 · age 28
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 — Lake-County, Illinois
Open full size
1940 US Federal Census — Lake-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00830-00173)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Irwin Koon | 42 | Brother | Chauffeur | Iowa |
| 2 | Edward Groot | 11 | Son | — | Illinois |
| 3 | Doris Atteridge | 22 | Daughter | — | Texas |
| 4 | Frank Cahill | 23 | Nephew | Laborer | Illinois |
| 5 | Grace Stanley | 63 | Sister | — | Illinois |
| 6 | Jan C Macpherson | 23 | Son | Demonstrator | Canada-English |
| 7 | Helen Marie Sayre | 12 | Daughter | — | Illinois |
| 8 | Raymond Jr Sayre | 9 | Son | — | Illinois |
| 9 | William Burris | 12 | Son | — | Illinois |
| 10 | William King | 17 | Brother-in-law | Clerk | Nebraska |
| 11 | Mary Chiappe | 32 | Wife | — | Georgia |
| 12 | Amy E Rose | 64 | Sister | Industrial Nurse | England |
| 13 | Ruth Grace | 20 | Daughter | Ambulance Driver | Illinois |
| 14 | Arthur Turpel | 12 | Son | — | Illinois |
| 15 | Catherine Turpel | 11 | Daughter | — | Illinois |
| 16 | Ethel Appleton | 68 | Mother | — | Illinois |
| 17 | Gabriel Malenius | 56 | Head | Painter | Finland |
| 18 | Alena Malenius | 56 | Wife | — | Finland |
| 19 | Susan Rosenhausen | 76 | Mother-in-law | — | Germany |
| 20 | Agot Mouplau | 75 | Mother | — | Norway |
| 21 | John Krentzberg | 65 | Head | Salesman | Illinois |
| 22 | Nelle Krentzberg | 55 | Wife | Saleswoman | Maryland |
| 23 | John Krentzberg | 12 | Son | — | Illinois |
| 24 | William Thomas | 60 | Head | Garden Superintendent | England |
| 25 | Frida Thomas | 57 | Wife | — | Sweden |
| 26 | Charles Thomas THIS PERSON | 30 | Son | Clerk | Illinois |
| 27 | Helen Thomas | 28 | Daughter | Stenographer | Illinois |
| 28 | John Swenson | 28 | Servant | Worker | Sweden |
| 29 | Lucy C Wood | 67 | Sister-in-law | Owner | Maryland |
| 30 | Joan Joyce | 13 | Daughter | — | Illinois |
| 31 | Cora Helen Fowler | 27 | Lodger | Teacher | Illinois |
| 32 | Gail Hansberg | 13 | Grand-daughter | — | Illinois |
| 33 | Peter Laub | 40 | Head | Chauffeur | Roumania |
| 34 | Katrina Laub | 37 | Wife | — | Roumania |
| 35 | John Wm Laub | 12 | Son | — | Illinois |
| 36 | John Foster | 32 | Head | Industrial Engineer | Massachusetts |
| 37 | Marion Foster | 31 | Wife | — | Massachusetts |
| 38 | Dorelyn Foster | 4 | Daughter | — | Illinois |
| 39 | John Foster | 2 | Son | — | Illinois |
| 40 | Hobart Swan | 34 | Head | Druggist | Illinois |
Pedigree Summary
Charles + 2 siblings
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
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)