EC
Eugene Clark — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Adams-County, Illinois
Our Model Tree links this Eugene Clark across the 1930 and 1940 US Censuses in Adams-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1922), then head of a 7-person household.
Age 18
b. ~1922
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Adams-County, Illinois |
| Surname | Clark |
| Given Name | Eugene |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Quincy City |
| 1935 Residence (County) | Adams |
| Additional Details | |
| Occupation | Truck Driver |
| Industry | Retail Meat Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 220 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Truck Driver |
| Township / Ward | Quincy City |
| Est. Birth Year | ~1922 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Eugene | Age | Birth yr |
|---|---|---|---|---|
| Roger Clark | Son | — | 12 | ~1928 |
| Robyne Clark | Head | — | 50 | ~1890 |
| Marie Clark | Spouse | — | 48 | ~1892 |
| Eugene Clark | Son | — | 18 | ~1922 |
| Marian Clark | Daughter | — | 18 | ~1922 |
| Arthur Clark | Son | — | 14 | ~1926 |
| Robyne Clark | Son | — | 23 | ~1917 |
Census Appearances
1930
Adams, Illinois
Son, age 8
Adams, Illinois · implied b. ~1922 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Eugene |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Adams-County, Illinois
Son, age 18
Adams-County, Illinois · implied b. ~1922 — 7 household members
| Surname | Clark |
| Given Name | Eugene |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Quincy City |
| 1935 Residence (County) | Adams |
| Occupation | Truck Driver |
| Industry | Retail Meat Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 220 |
| Highest Grade | Hs 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 Eugene Clark across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Eugene Clark
Son · 1940 · age 18 · b. ~1922 · Illinois
★ You are viewing this record
Sibling
Marian Clark
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Roger Clark
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arthur Clark
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robyne Clark
Sibling · 1940 · age 23
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 — Adams-County, Illinois
Open full size
1940 US Federal Census — Adams-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00757-00440)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary A. Schmitt | 7 | Daughter | — | Illinois |
| 2 | Gilbert S. Nutt | 50 | Head | Truck Driver | Illinois |
| 3 | Leora Nutt | 37 | Wife | — | Illinois |
| 4 | Thomas A. Yager | 88 | Head | — | Missouri |
| 5 | Martha Yager | 50 | Daughter | — | Missouri |
| 6 | Alberta Yager | 48 | Daughter | — | Missouri |
| 7 | Margaret Mccurren | 28 | Daughter | Operator | Missouri |
| 8 | Paul Corder | 46 | Head | Foreman | Illinois |
| 9 | Ada Corder | 43 | Wife | — | Illinois |
| 10 | Mary Ann Corder | 15 | Daughter | — | Illinois |
| 11 | Pauline Corder | 9 | Daughter | — | Illinois |
| 12 | Joseph Engels | 39 | Head | Welder | Illinois |
| 13 | Violet Engels | 29 | Wife | — | Illinois |
| 14 | Joseph Jr. Engels | 11 | Son | — | Illinois |
| 15 | Norma Engels | 10 | Daughter | — | Illinois |
| 16 | Joyce Engels | 9 | Daughter | — | Illinois |
| 17 | Joseph S. Emhaus | 60 | Head | Bartender | Illinois |
| 18 | Anna May Emhaus | 45 | Wife | — | Illinois |
| 19 | Thomas Lou Emhaus | 24 | Son | Bartender | Illinois |
| 20 | Alvera S. Mast | 36 | Head | — | Illinois |
| 21 | John Mast | 20 | Lodger | Shoe Maker | Illinois |
| 22 | Lawrence Weed | 37 | Lodger | Carpenter | Illinois |
| 23 | Robyne Clark | 50 | Head | Guard | Illinois |
| 24 | Marie Clark | 48 | Wife | — | Illinois |
| 25 | Robyne Jr. Clark | 23 | Son | Laborer | Illinois |
| 26 | Marian Clark | 18 | Daughter | Seamstress | Illinois |
| 27 | Eugene Clark THIS PERSON | 18 | Son | Truck Driver | Illinois |
| 28 | Arthur Clark | 14 | Son | — | Illinois |
| 29 | Roger Clark | 12 | Son | — | Illinois |
| 30 | K. Kirk Edwards | 49 | Head | Driller | Illinois |
| 31 | Sadie Edwards | 47 | Wife | — | Illinois |
| 32 | Elizabeth Brummel | 65 | Head | — | Illinois |
| 33 | Nellie Brummel | 25 | Daughter | Clerk | Illinois |
| 34 | Louise Brummel | 23 | Daughter | Stenographer | Illinois |
| 35 | Robert Brummel | 27 | Son | Clerk | Illinois |
| 36 | Chas. L. Schuvenella | 71 | Lodger | Painter | Illinois |
| 37 | George S. Schmitt | 36 | Head | Machinist | Illinois |
| 38 | Stella Schmitt | 34 | Wife | — | Illinois |
| 39 | George Jr. Schmitt | 15 | Son | — | Illinois |
| 40 | Glen Schmitt | 14 | 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)