GJ
Gertrude Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Gertrude Johnson across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1902), then head of a 4-person household.
Age 38
b. ~1902
Female
Spouse
Born: Sweden
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Johnson |
| Given Name | Gertrude |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
| Township / Ward | Chicago |
| Est. Birth Year | ~1902 |
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 Gertrude | Age | Birth yr |
|---|---|---|---|---|
| Marion Johnson | Daughter | — | 4 | ~1936 |
| Theodore Johnson | Head | — | 47 | ~1893 |
| Norman Johnson | Son | — | 7 | ~1933 |
| Gertrude Johnson | Spouse | — | 38 | ~1902 |
Census Appearances
1920
Cook, Illinois
Other, age 15
Cook, Illinois · implied b. ~1905 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Gertrude |
| Relationship to Head | Sister-in-law |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Sweden |
| Year of Immigration | 1915 |
| Naturalization Status | Alien |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Dressmaker |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1930
Cook, Illinois
Other, age 27
Cook, Illinois · implied b. ~1903 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Gertrude |
| Relationship to Head | Servant |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Sweden |
| Naturalization Status | Alien |
| Year of Immigration | 1913 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Servant |
| Industry | Private home |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Swedish |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1940
Cook-County, Illinois
Spouse, age 38
Cook-County, Illinois · implied b. ~1902 — 4 household members
| Surname | Johnson |
| Given Name | Gertrude |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
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 Gertrude Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Gertrude Johnson
Spouse · 1940 · age 38 · b. ~1902 · 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-t0627-01003-00314)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Franklin K. Hauff | 26 | Son | Office Clerk | Illinois |
| 42 | Ben R. Peterson | 42 | Head | Typewriter-Repairman | Illinois |
| 43 | Ngorda B. Peterson | 42 | Wife | — | Norway |
| 44 | George C. Yost | 44 | Head | Inspector-Carpenter | France |
| 45 | Hilda M. Yost | 39 | Wife | — | Illinois |
| 46 | George A. Yost | 16 | Son | — | Illinois |
| 47 | Richard J. Yost | 14 | Son | — | Illinois |
| 48 | Kenneth L. Yost | 12 | Son | — | Illinois |
| 49 | Elizabeth L. Yost | 3 | Daughter | — | Illinois |
| 50 | George J. Zimmerman | 37 | Head | Buyer Dept. Store | Ohio |
| 51 | Bernice M. Zimmerman | 36 | Wife | Stenographer | Illinois |
| 52 | George H. Zimmerman | 14 | Son | — | Illinois |
| 53 | Richard D. Zimmerman | 12 | Son | — | Illinois |
| 54 | Patricia A. Zimmerman | 11 | Daughter | — | Illinois |
| 55 | Gilbert A. Wessel | 35 | Head | Bookkeeper | Illinois |
| 56 | June M. Wessel | 36 | Wife | — | Illinois |
| 57 | Clifford A. Wessel | 9 | Son | — | Illinois |
| 58 | Lillian M. Wessel | 5 | Daughter | — | Illinois |
| 59 | Frieda A. Kaiser | 61 | Head | — | Illinois |
| 60 | Louise H. Kaiser | 35 | Niece | Stenographer | Illinois |
| 61 | Theodore Johnson | 47 | Head | Engineer | Sweden |
| 62 | Gertrude Johnson THIS PERSON | 38 | Wife | — | Sweden |
| 63 | Norman Johnson | 7 | Son | — | Illinois |
| 64 | Marion Johnson | 4 | Daughter | — | Illinois |
| 65 | Ralph W. Bradford | 43 | Head | Salesman | Illinois |
| 66 | Harriet M. Bradford | 46 | Wife | — | Illinois |
| 67 | Ralph Bradford | 13 | Son | — | Illinois |
| 68 | Frank Porsche | 43 | Head | Office Clerk | Indiana |
| 69 | Grace Porsche | 46 | Wife | — | Wisconsin |
| 70 | Ernest Langer | 36 | Head | Accountant | Illinois |
| 71 | Mildred G. Langer | 27 | Wife | — | Michigan |
| 72 | Lowell G. Berg | 36 | Head | Office Clerk | Illinois |
| 73 | Agnes J. Berg | 36 | Wife | — | Illinois |
| 74 | Robert L. Berg | 12 | Son | — | Illinois |
| 75 | Michael E. Burns | 27 | Head | Mail Handler | Illinois |
| 76 | Marguerite Burns | 25 | Wife | — | Illinois |
| 77 | Henry L. Jensen | 45 | Head | Mail Clerk | Wisconsin |
| 78 | Alfie G. Jensen | 38 | Wife | — | Minnesota |
| 79 | Theodore F. Jensen | 8 | Son | — | Illinois |
| 80 | Edwin Anderson | 39 | Head | Draftsman | Sweden |
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)