RT
Richard Thomas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Richard Thomas across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Helen & Marie — first a son (b.~1917), then head of a 3-person household.
Age 23
b. ~1917
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Thomas |
| Given Name | Richard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago - City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Press-man |
| Industry | Speed-Graphic |
| Class of Worker | PW |
| Hours Worked | 15 |
| Income (1939) | 900 |
| Highest Grade | H 3 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Press-Man |
| Township / Ward | Chicago 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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Richard | Age | Birth yr |
|---|---|---|---|---|
| Lewis Thomas | Head | — | 52 | ~1888 |
| Richard Thomas | Son | — | 23 | ~1917 |
| Marie Thomas | Spouse | — | 56 | ~1884 |
Census Appearances
1920
Cook, Illinois
Son, age 2
Cook, Illinois · implied b. ~1918 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Richard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 12
Cook, Illinois · implied b. ~1918 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Richard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 23
Cook-County, Illinois · implied b. ~1917 — 3 household members
| Surname | Thomas |
| Given Name | Richard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago - City |
| 1935 Residence (County) | Cook |
| Occupation | Press-man |
| Industry | Speed-Graphic |
| Class of Worker | PW |
| Hours Worked | 15 |
| Income (1939) | 900 |
| Highest Grade | H 3 |
| 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 Richard Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Helen Thomas (~0.92 confidence) and mother Marie Thomas (~0.92 confidence) and father Lewis Thomas (~0.92 confidence) and father Robert Thomas (~0.92 confidence) and mother George Thomas (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Helen Thomas
b. ~1873
Source mother
● Household
· direct · ~0.92
Mother
Marie Thomas
b. ~1884
Source mother
● Household
· direct · ~0.92
Father
Lewis Thomas
b. ~1888
Source father
● Household
· direct · ~0.92
Father
Robert Thomas
b. ~1889
Source father
● Household
· direct · ~0.92
Mother
George Thomas
b. ~1893
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Richard Thomas
Son · 1940 · age 23 · b. ~1917 · Illinois
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01002-00529)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Harry Pocket | 32 | Head | Polisher | Illinois |
| 42 | Stella Pocket | 31 | Wife | Sewing | Illinois |
| 43 | Wayne Pocket | 8 | Son | — | Illinois |
| 44 | Gloria Pocket | 6 | Daughter | — | Illinois |
| 45 | Henry Klisch | 29 | Head | Service Man | Illinois |
| 46 | Eleanor Klisch | 27 | Wife | — | Illinois |
| 47 | Donald Klisch | 3 | Son | — | Illinois |
| 48 | Frederick Lundin | 63 | Head | Journeyman | Sweden |
| 49 | Marie Lundin | 56 | Wife | — | Sweden |
| 50 | Agnes M. Lundin | 28 | Daughter | Stenographer | Montana |
| 51 | Ruth E. Lundin | 27 | Daughter | Stenographer | Montana |
| 52 | Emma Bishop | 52 | Head | Coal Dealer | Montana |
| 53 | Charles Bishop | 85 | Father | — | Germany |
| 54 | Ignacius Trella | 63 | Head | Tailor | Austria |
| 55 | Henry Trella | 34 | Son | Tailor | Illinois |
| 56 | Walter Schrier | 26 | Son-in-law | Attendant | Illinois |
| 57 | Margaret Schrier | 28 | Daughter | — | Illinois |
| 58 | Stanley Trella | 35 | Head | Sketch Artist | Illinois |
| 59 | Elsie Trella | 31 | Wife | — | Illinois |
| 60 | Richard Trella | 13 | Son | — | Minnesota |
| 61 | Frederick Vollmer | 32 | Head | Office Clerk | Illinois |
| 62 | Alice Vollmer | 26 | Wife | — | Illinois |
| 63 | Frederick Jr. Vollmer | 0 | Son | — | Illinois |
| 64 | Frank H. Anderson | 49 | Head | Foundry Machinist | Illinois |
| 65 | Ethel Anderson | 40 | Wife | — | Illinois |
| 66 | Tyra Anderson | 18 | Son | Odd Jobs | Illinois |
| 67 | William Woern | 59 | Head | Grocery Proprietor | Germany |
| 68 | Mabel Woern | 42 | Wife | — | Illinois |
| 69 | Ernest Schlung | 32 | Head | Carpenter | Illinois |
| 70 | Britta Schlung | 36 | Wife | — | Illinois |
| 71 | Lewis Thomas | 52 | Head | Inspector | Indiana |
| 72 | Marie Thomas | 56 | Wife | — | Indiana |
| 73 | Richard Thomas THIS PERSON | 23 | Son | Press-Man | Illinois |
| 74 | Vance Megann | 48 | Head | Shipping Clerk | Illinois |
| 75 | Louise Megann | 44 | Wife | — | Illinois |
| 76 | Gordon Megann | 21 | Son | Errand Boy | Illinois |
| 77 | Henry Giersch | 57 | Head | — | Luxembourg |
| 78 | Josephine Giersch | 54 | Wife | — | Austria |
| 79 | John Vachula | 63 | Head | Tanner | Czechoslovakia |
Pedigree Summary
Richard
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)