EC
Earl Clark — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Champaign-County, Illinois
Our Model Tree links this Earl Clark across the 1930 and 1940 US Censuses in Champaign-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 8-person household.
Age 13
b. ~1927
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Champaign-County, Illinois |
| Surname | Clark |
| Given Name | Earl L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Pesotum Village |
| 1935 Residence (County) | Champaign |
| Additional Details | |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Pesotum Village |
| Est. Birth Year | ~1927 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Earl | Age | Birth yr |
|---|---|---|---|---|
| Jasper Clark | Head | — | 55 | ~1885 |
| Juanita Clark | Daughter | — | 18 | ~1922 |
| Ina Clark | Spouse | — | 51 | ~1889 |
| Gerald Clark | Son | — | 22 | ~1918 |
| Audrey Clark | Daughter | — | 11 | ~1929 |
| Dorothy Clark | Daughter | — | 6 | ~1934 |
| Wayne Clark | Son | — | 15 | ~1925 |
| Earl Clark | Son | — | 13 | ~1927 |
Census Appearances
1930
Champaign, Illinois
Son, age 3
Champaign, Illinois · implied b. ~1927 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Earl L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Champaign-County, Illinois
Son, age 13
Champaign-County, Illinois · implied b. ~1927 — 8 household members
| Surname | Clark |
| Given Name | Earl L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Pesotum Village |
| 1935 Residence (County) | Champaign |
| Highest Grade | No 7 |
| 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 Earl Clark across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Earl Clark
Son · 1940 · age 13 · b. ~1927 · Illinois
★ You are viewing this record
Sibling
Audrey Clark
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Wayne Clark
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Juanita Clark
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Clark
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gerald Clark
Sibling · 1940 · age 22
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 — Champaign-County, Illinois
Open full size
1940 US Federal Census — Champaign-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00766-00472)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary E. Boadrick | 50 | Wife | — | Illinois |
| 2 | Leo S. Boadrick | 30 | Son | Waiter | Illinois |
| 3 | Martin M. Boadrick | 81 | Father | — | W. Virginia |
| 4 | John W. Deal | 40 | Head | Proprietor | Illinois |
| 5 | Gladys M. Deal | 38 | Wife | — | Montana |
| 6 | Doris L. Deal | 16 | Daughter | — | Illinois |
| 7 | Robert J. Taylor | 27 | Head | Teacher | Illinois |
| 8 | Drucella Taylor | 25 | Wife | — | Illinois |
| 9 | Frances E. Klein | 45 | Head | Janitress | Illinois |
| 10 | Luella V. Klein | 20 | Daughter | Cook | Illinois |
| 11 | Margaret M. Klein | 17 | Daughter | — | Illinois |
| 12 | John Samuelson | 74 | Head | Night Watchman | Germany |
| 13 | Arthur A. Allen | 62 | Head | — | Indiana |
| 14 | Pearl H. Allen | 57 | Wife | — | Indiana |
| 15 | Charles F. Reinhart | 58 | Head | Common Laborer | Illinois |
| 16 | Mary A. Reinhart | 61 | Wife | — | Illinois |
| 17 | Philomena Vickers | 58 | Head | — | Germany |
| 18 | Martha Malfrich | 72 | Head | — | Illinois |
| 19 | Albert S. Mayer | 29 | Head | Proprietor | Illinois |
| 20 | Dorothy F. Mayer | 26 | Wife | Tutor | Illinois |
| 21 | Mary Briner | 72 | Head | — | Illinois |
| 22 | Lena During | 67 | Head | — | Illinois |
| 23 | Albert Piffer | 37 | Son-in-law | Laborer | Illinois |
| 24 | Lillie C. Piffer | 28 | Daughter | — | Illinois |
| 25 | Andrew C. Muns | 78 | Head | — | Illinois |
| 26 | Mable G. Muns | 61 | Wife | — | Illinois |
| 27 | John D. Carey | 64 | Head | — | Indiana |
| 28 | Ida M. Carey | 55 | Wife | — | Indiana |
| 29 | Richard P. Carey | 19 | Son | Laborer | Illinois |
| 30 | Jasper M. Clark | 55 | Head | Manager Operator | Illinois |
| 31 | Ina Clark | 51 | Wife | Operator | Illinois |
| 32 | Gerald R. Clark | 22 | Son | Common Laborer | Alabama |
| 33 | Juanita L. Clark | 18 | Daughter | — | Illinois |
| 34 | Wayne W. Clark | 15 | Son | — | Illinois |
| 35 | Earl L. Clark THIS PERSON | 13 | Son | — | Illinois |
| 36 | Audrey M. Clark | 11 | Daughter | — | Illinois |
| 37 | Dorothy J. Clark | 6 | Daughter | — | Illinois |
| 38 | Dale M. Clark | 27 | Head | Driver | Illinois |
| 39 | Emily E. Clark | 27 | Wife | — | Illinois |
| 40 | Patricia S. Clark | 2 | Daughter | — | 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)