GJ
Gertrude Johnson — 1940 US Census Record
Model Tree available1940 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), with identified parents John & John — first a daughter (b.~1887), then head of a 5-person household.
Age 53
b. ~1887
Female
Daughter
Born: Sweden
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Johnson |
| Given Name | Gertrude |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Single |
| Birthplace | Sweden |
| 1935 Residence (City) | Halmstad |
| 1935 Residence (County) | Sweden |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Forelady |
| Industry | Meat Packers |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | No 8 |
| 1935 Residence | Sweden |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
| Occupation | Forelady |
| Township / Ward | Chicago |
| Est. Birth Year | ~1887 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Gertrude | Age | Birth yr |
|---|---|---|---|---|
| Gertrude Johnson | Daughter | — | 53 | ~1887 |
| Hellum Jacobsen | Daughter | — | 42 | ~1898 |
| John Johnson | Head | — | 79 | ~1861 |
| John Babel | Other | — | 25 | ~1915 |
| John Korman | Other | — | 27 | ~1913 |
Census Appearances
1920
Cook, Illinois
Daughter, age 33
Cook, Illinois · implied b. ~1887 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Gertrude |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | Sweden |
| Year of Immigration | 1885 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Forelady |
| Industry | Clothing Bus |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Birth Country | Sweden |
| Year of Naturalization | 1890 |
| Birthplace (normalized) | sweden |
1930
Cook, Illinois
Daughter, age 42
Cook, Illinois · implied b. ~1888 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Gertrude |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Single |
| Birthplace | Sweden |
| Naturalization Status | Naturalized |
| Year of Immigration | 1890 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Forelady |
| Industry | Wholesale Tailor |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Swedish |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1940
Cook-County, Illinois
Daughter, age 53
Cook-County, Illinois · implied b. ~1887 — 5 household members
| Surname | Johnson |
| Given Name | Gertrude |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Single |
| Birthplace | Sweden |
| 1935 Residence (City) | Halmstad |
| 1935 Residence (County) | Sweden |
| Naturalization Status | Naturalized |
| Occupation | Forelady |
| Industry | Meat Packers |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | No 8 |
| 1935 Residence | Sweden |
| 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. Identified parents: father John Johnson (~0.92 confidence) and father John Johnson (~0.92 confidence) and father John Johnson (~0.92 confidence) and mother Lillian Johnson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Johnson
b. ~1861
Source father
● Household
· direct · ~0.92
Father
John Johnson
b. ~1861
Source father
● Household
· direct · ~0.92
Father
John Johnson
b. ~1863
Source father
● Household
· direct · ~0.92
Mother
Lillian Johnson
b. ~1867
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Gertrude Johnson
Daughter · 1940 · age 53 · b. ~1887 · Illinois
★ You are viewing this record
Sibling
Hellum Jacobsen
Sibling · 1940 · age 42
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-t0627-00991-00699)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Diane Harcharik | 7 | daughter | — | Illinois |
| 2 | John Harcharik | 5 | son | — | Illinois |
| 3 | Charles Euler | 72 | head | — | Germany |
| 4 | Anna Euler | 64 | wife | — | Germany |
| 5 | John Johnson | 79 | head | — | Sweden |
| 6 | Gertrude Johnson THIS PERSON | 53 | daughter | Forelady | Sweden |
| 7 | Hellum Jacobsen | 42 | daughter | — | Illinois |
| 8 | John Korman | 27 | lodger | Packer | Illinois |
| 9 | John Babel | 25 | lodger | Asst. Mgr. | Illinois |
| 10 | George Miller | 56 | head | Chemist | Illinois |
| 11 | Bertha Miller | 55 | wife | — | Germany |
| 12 | Edwin Johnson | 34 | head | Deputy Controller | Texas |
| 13 | Nell Johnson | 28 | wife | — | Indiana |
| 14 | Robert Johnson | 1 | son | — | Illinois |
| 15 | Wallace Davis | 37 | head | Salesman | Iowa |
| 16 | Lillian Davis | 32 | wife | — | Illinois |
| 17 | Maria Stani | 51 | head | — | Illinois |
| 18 | Helen Peterson | 48 | sister | Stenographer | Illinois |
| 19 | Jane S. Hayden | 67 | head | — | Illinois |
| 20 | Emily E. Ody | 76 | sister | — | Illinois |
| 21 | Waage Petersen | 52 | head | House Painter | Denmark |
| 22 | Ruth Petersen | 52 | wife | — | Denmark |
| 23 | Martin Nielsen | 50 | head | Architect | Denmark |
| 24 | Cecilia Nielsen | 52 | wife | — | Denmark |
| 25 | Halfdan Bjorn | 52 | head | Pattern Maker | Norway |
| 26 | Agnes Bjorn | 51 | wife | — | Norway |
| 27 | Caroline Ratley | 54 | head | — | Norway |
| 28 | Walter Faraby | 54 | lodger | Serviceman Attendant | Illinois |
| 29 | Benjamin Brodsky | 24 | head | Automotive Merchant | Illinois |
| 30 | Anne Brodsky | 25 | wife | Instructor & Cashier | Illinois |
| 31 | Maria Olszewski | 55 | mother-in-law | Assistant Cook | Poland |
| 32 | Felix Borski | 36 | head | Assistant Manager | Illinois |
| 33 | Agnes Borski | 36 | wife | — | Illinois |
| 34 | Agnes Borski | 12 | daughter | — | Illinois |
| 35 | Cecilia Koslowski | 52 | mother-in-law | Salesman | Illinois |
| 36 | Fred A. Mckedrick | 64 | head | Guard | Illinois |
| 37 | Alma Mckedrick | 62 | wife | — | Illinois |
| 38 | Michael Gupina | 30 | head | Foreman-Pressman | Pennsylvania |
| 39 | Gertrude Gupina | 28 | wife | — | Illinois |
| 40 | Joseph Wleklinski | 63 | father-in-law | — | Poland |
Pedigree Summary
Gertrude + 1 sibling
Gen 1 · 4 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)