GC
George Campbell — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this George Campbell across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Hugh & Yvonne — first a son (b.~1919), then head of a 4-person household.
Age 21
b. ~1919
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Campbell |
| Given Name | George L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Chemist |
| Industry | Steel Plant |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 630 |
| Highest Grade | H 3 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Chemist |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1919 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to George | Age | Birth yr |
|---|---|---|---|---|
| Mary Campbell | Daughter | — | 21 | ~1919 |
| Gwyneth Campbell | Daughter | — | 23 | ~1917 |
| Yvonne Campbell | Head | — | 44 | ~1896 |
| George Campbell | Son | — | 21 | ~1919 |
Census Appearances
1920
Cook, Illinois
Other, age 1
Cook, Illinois · implied b. ~1919 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | George |
| Relationship to Head | Grandson |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Michigan |
| 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 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | George L |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 21
Cook-County, Illinois · implied b. ~1919 — 4 household members
| Surname | Campbell |
| Given Name | George L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | Chemist |
| Industry | Steel Plant |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 630 |
| Highest Grade | H 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 Campbell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Hugh Campbell (~0.92 confidence) and mother Yvonne Campbell (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Hugh Campbell
b. ~1896
Source father
● Household
· direct · ~0.92
Mother
Yvonne Campbell
b. ~1896
Source mother
● Household
· direct · ~0.92
This person
Anchor record
George Campbell
Son · 1940 · age 21 · b. ~1919 · Illinois
★ You are viewing this record
Sibling
Mary Campbell
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gwyneth Campbell
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 — 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-t0627-00934-00229)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Hylma Hurwitz | 34 | Wife | — | Russia |
| 42 | Merle Hurwitz | 8 | Son | — | Illinois |
| 43 | Mitchell Hurwitz | 5 | Son | — | Illinois |
| 44 | Linda Hurwitz | 2 | Daughter | — | Illinois |
| 45 | Gilda Hurwitz | 1 | Daughter | — | Illinois |
| 46 | Rose Kaplan | 66 | Head | Sales Manager | Russia |
| 47 | Pearl F. Kaplan | 44 | Daughter | — | New York |
| 48 | Bernard S. Kaplan | 35 | Son | — | Illinois |
| 49 | Jacob Kaplan | 56 | Brother | Lawyer | Russia |
| 50 | Alexander Smerling | 43 | Head | Repair Man | Florida |
| 51 | Sylvia Smerling | 43 | Wife | — | New York |
| 52 | Seymour I. Smerling | 19 | Son | — | New York |
| 53 | Selma T. Smerling | 15 | Daughter | — | New York |
| 54 | William H. Smerling | 11 | Son | — | New York |
| 55 | Peter L. Golub | 43 | Head | Instrument Maker | Russia |
| 56 | Vera S. Golub | 43 | Wife | — | Russia |
| 57 | Belle P. Golub | 16 | Daughter | — | Illinois |
| 58 | Sheldon Golub | 10 | Son | — | Illinois |
| 59 | Louis Silverman | 59 | Head | Owner Manager | Russia |
| 60 | Sophia Silverman | 60 | Wife | Owner Manager | Russia |
| 61 | Charles Silverman | 20 | Son | — | Illinois |
| 62 | Nettie B. Jackson | 56 | Maid | Maid | North Carolina |
| 63 | Bertha Drechsler | 52 | Head | Manager | Iowa |
| 64 | Lillian Drechsler | 27 | Daughter | Clerk Typist | Illinois |
| 65 | Rochelle Drechsler | 21 | Daughter | Book Keeper | Illinois |
| 66 | Stanley J. Drechsler | 18 | Son | — | Illinois |
| 67 | Yvonne Campbell | 44 | Head | Teacher | Illinois |
| 68 | Gwyneth R. Campbell | 23 | Daughter | Stenographer | Illinois |
| 69 | George L. Campbell THIS PERSON | 21 | Son | Chemist | Illinois |
| 70 | Mary L. Campbell | 21 | Daughter | Stenographer | Illinois |
| 71 | Helmer Kaecher | 37 | Head | Social Worker | Missouri |
| 72 | Flora Kaecher | 35 | Wife | Teacher | England |
| 73 | Joel Kaecher | 5 | Son | — | Illinois |
| 74 | Alice L. Humphrey | 28 | Maid | Maid | Alabama |
| 75 | Joseph Zilvaskin | 40 | Head | Prop. Of Store | Russia |
| 76 | Lottie Zilvaskin | 39 | Wife | — | Russia |
| 77 | Neva Zilvaskin | 18 | Daughter | — | Illinois |
| 78 | Allan R. Zilvaskin | 13 | Son | — | Illinois |
| 79 | Harry Mendeloff | 48 | Head | Investment Salesman | England |
| 80 | Ella Mendeloff | 48 | Wife | — | Russia |
Pedigree Summary
George + 2 siblings
Gen 1 · 2 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)