GC
George Clark — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this George Clark across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Ivan & Mary — first a head (b.~1906), then head of a 3-person household.
Age 34
b. ~1906
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Clark |
| Given Name | George A |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Elmwood Park |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Substation Oper |
| Industry | Public Utility |
| Class of Worker | PW |
| Income (1939) | 488 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Substation Oper |
| Township / Ward | Elmwood Park |
| Est. Birth Year | ~1906 |
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 George | Age | Birth yr |
|---|---|---|---|---|
| Nancy Clark | Daughter | — | 6 | ~1934 |
| George Clark | Head | — | 34 | ~1906 |
| Antoinette Clark | Spouse | — | 33 | ~1907 |
Census Appearances
1920
Cook, Illinois
Son, age 12
Cook, Illinois · implied b. ~1908 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | George |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 23
Cook, Illinois · implied b. ~1907 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | George |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Stock Clerk |
| Industry | Tailoring |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | no |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Head, age 34
Cook-County, Illinois · implied b. ~1906 — 3 household members
| Surname | Clark |
| Given Name | George A |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Elmwood Park |
| 1935 Residence (County) | Cook |
| Occupation | Substation Oper |
| Industry | Public Utility |
| Class of Worker | PW |
| Income (1939) | 488 |
| Highest Grade | Hs 3 |
| 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 George Clark across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Ivan Clark (~0.60 confidence) and mother Mary Clark (~0.60 confidence) and mother Frances Clark (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.71
Father
Ivan Clark
b. ~1896
Source father
● Household
· direct · ~0.6
Mother
Mary Clark
b. ~1896
Source mother
● Household
· direct · ~0.6
Mother
Frances Clark
b. ~1876
Source mother
● Household
· direct · ~0.92
This person
Anchor record
George Clark
Head · 1940 · age 34 · b. ~1906 · 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
40 people indexed on this census page (nara:1940:m-t0627-00780-00506)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Bion W Johnson | 43 | Head | Salesman | Illinois |
| 2 | Pearl Johnson | 37 | Wife | — | Germany |
| 3 | Alice M Johnson | 15 | Daughter | — | Illinois |
| 4 | Jean P Johnson | 9 | Daughter | — | Illinois |
| 5 | Charles M Busam | 54 | Head | Engineer | Wisconsin |
| 6 | Winifred J Busam | 55 | Wife | — | Wisconsin |
| 7 | Darlene C Busam | 23 | Daughter | — | Wisconsin |
| 8 | Duane B Busam | 4 | Grandson | — | Illinois |
| 9 | William E Remelius | 31 | Head | Setupman | Illinois |
| 10 | Marie H Remelius | 28 | Wife | — | Kentucky |
| 11 | Lois J Remelius | 6 | Daughter | — | Illinois |
| 12 | Linda L Remelius | 2 | Daughter | — | Illinois |
| 13 | Kenneth W Blan Kenchip | 24 | Lodger | Laborer | Illinois |
| 14 | Henry Henriksen | 49 | Head | Creditman | Illinois |
| 15 | Adeline Henriksen | 39 | Wife | — | Michigan |
| 16 | George A Clark THIS PERSON | 34 | Head | Substation Oper | Illinois |
| 17 | Antoinette Clark | 33 | Wife | — | Illinois |
| 18 | Nancy L Clark | 6 | Daughter | — | Illinois |
| 19 | George A Peake | 34 | Head | Painter | Pennsylvania |
| 20 | Margaret M Peake | 29 | Wife | — | Iowa |
| 21 | Charmaine T Peake | 5 | Daughter | Painter | Illinois |
| 22 | Carter A Holmbeck | 48 | Head | — | Illinois |
| 23 | Dorothy H Holmbeck | 45 | Wife | — | Illinois |
| 24 | Sandra J Holmbeck | 15 | Daughter | — | Illinois |
| 25 | Joseph A Boehle | 44 | Head | Conductor | Illinois |
| 26 | Frances E Boehle | 41 | Wife | — | Illinois |
| 27 | Robert J Boehle | 17 | Son | — | Illinois |
| 28 | Eleanor F Boehle | 11 | Daughter | — | Illinois |
| 29 | Arthur H Kukak | 41 | Head | Clerk | Illinois |
| 30 | Elsie S Kukak | 41 | Wife | — | Illinois |
| 31 | Elaine M Kukak | 12 | Daughter | — | Illinois |
| 32 | Joseph R Christ | 49 | Head | Millwright | Illinois |
| 33 | Marie A Christ | 49 | Wife | Inspector | Bohemia |
| 34 | Victor L Parmentier | 40 | Head | Inspector | Illinois |
| 35 | Florence M Parmentier | 46 | Wife | — | Illinois |
| 36 | Marilyn S Parmentier | 11 | Daughter | — | Illinois |
| 37 | Reinhold E Maier | 53 | Head | Electrician | Illinois |
| 38 | Florence B Maier | 49 | Wife | — | Delaware |
| 39 | Stephen J Jr Kolar | 32 | Head | Forman | Illinois |
| 40 | Doris S Kolar | 29 | Wife | Comptometer Op | Illinois |
Pedigree Summary
George
Gen 1 · 3 parents
~0.71
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)