BJ
Bertha Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Bertha Johnson across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1870), then head of a 5-person household.
Age 70
b. ~1870
Female
Head
Born: Sweden
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Johnson |
| Given Name | Bertha |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 70 |
| Marital Status | Widowed |
| Birthplace | Sweden |
| 1935 Residence (City) | CHICAGO-CITY |
| 1935 Residence (County) | COOK |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
| Township / Ward | Chicagocity |
| Est. Birth Year | ~1870 |
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 Bertha | Age | Birth yr |
|---|---|---|---|---|
| Gertrude Johnson | Daughter | — | 26 | ~1914 |
| Bertha Johnson | Head | — | 70 | ~1870 |
| Ira Johnson | Other | — | 66 | ~1874 |
| Nelson Johnson | Other | — | 41 | ~1899 |
| John Johnson | Son | — | 15 | ~1925 |
Census Appearances
1920
Cook, Illinois
Spouse, age 49
Cook, Illinois · implied b. ~1871 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Bertha |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Sweden |
| Year of Immigration | 1890 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Birth Country | Sweden |
| Year of Naturalization | 1895 |
| Birthplace (normalized) | sweden |
1930
Cook, Illinois
Other, age 58
Cook, Illinois · implied b. ~1872 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Bertha |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Sweden |
| Naturalization Status | Naturalized |
| Year of Immigration | 1887 |
| Age at First Marriage | 22 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read/Write | Yes |
| Mother Tongue | Swedish |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1940
Cook-County, Illinois
Head, age 70
Cook-County, Illinois · implied b. ~1870 — 5 household members
| Surname | Johnson |
| Given Name | Bertha |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 70 |
| Marital Status | Widowed |
| Birthplace | Sweden |
| 1935 Residence (City) | CHICAGO-CITY |
| 1935 Residence (County) | COOK |
| Naturalization Status | Naturalized |
| Highest Grade | 8 |
| 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 Bertha Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Bertha Johnson
Head · 1940 · age 70 · b. ~1870 · 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-t0627-01000-00639)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Caroline Kouch | 51 | Wife | — | Minnesota |
| 42 | Genevieve Kouch | 25 | Daughter | Typist | Minnesota |
| 43 | Villa Kouch | 20 | Daughter | Stenographer | Minnesota |
| 44 | Geo. M. Vlach | 32 | Head | Foreman | Illinois |
| 45 | Harriet Vlach | 31 | Wife | — | Illinois |
| 46 | Loretta Vlach | 11 | Daughter | — | Illinois |
| 47 | Geo. M. Jr. Vlach | 4 | Son | — | Illinois |
| 48 | Henry Schuessler | 68 | Head | Wood Carver | Germany |
| 49 | Bertha A. G. Schuessler | 61 | Wife | — | Illinois |
| 50 | John Schuessler | 33 | Son | Cutting Mach Operator | Illinois |
| 51 | John Maxim | 31 | Head | Candy Maker | Russia |
| 52 | Elizabeth M. Maxim | 31 | Wife | — | Illinois |
| 53 | Mary Elizabeth Maxim | 8 | Daughter | — | Illinois |
| 54 | Allan John Maxim | 6 | Son | — | Illinois |
| 55 | Jane Priscilla Maxim | 1 | Daughter | — | Illinois |
| 56 | John Rompa | 26 | Head | Shoe Maker | Illinois |
| 57 | Theresa G. Rompa | 25 | Wife | Inspector | Illinois |
| 58 | Bertha Johnson THIS PERSON | 70 | Head | — | Sweden |
| 59 | Nelson Johnson | 41 | Lodger | Grinder | Sweden |
| 60 | Ira B. Johnson | 66 | Lodger | House Man | Sweden |
| 61 | Gertrude Johnson | 26 | Daughter | Seamstress | Illinois |
| 62 | John Johnson | 15 | Son | — | Illinois |
| 63 | Joseph Orlowski | 55 | Head | Building Maintenance | Indiana |
| 64 | Josephine Orlowski | 52 | Wife | — | Indiana |
| 65 | Marie Orlowski | 29 | Daughter | Stenographer | Illinois |
| 66 | Arnold Orlowski | 25 | Son | Laborer | Illinois |
| 67 | Albert Ischinger | 59 | Head | Salesman | Germany |
| 68 | Amanda Ischinger | 55 | Wife | — | Illinois |
| 69 | Ruth Ischinger | 28 | Daughter | Clerical | Illinois |
| 70 | Albert Jr. Ischinger | 32 | Son | Butcher | Illinois |
| 71 | Howard Ischinger | 21 | Son | Deliveryman | Illinois |
| 72 | Gladys Ischinger | 19 | Daughter in law | — | Illinois |
| 73 | Albert Ischinger | 0 | Gr. Son | — | Illinois |
| 74 | Joseph J. Gabel | 69 | Head | — | Wisconsin |
| 75 | Elizabeth Gabel | 65 | Wife | — | Illinois |
| 76 | Joseph Jr. Gabel | 42 | Son | Radio Engineer | Illinois |
| 77 | Helen Gabel | 36 | Daughter | Proprietor | Illinois |
| 78 | Frank Gabel | 3 | Gr. Son | — | Illinois |
| 79 | John Schroeder | 33 | Head | Painter And Decorator | Illinois |
| 80 | Schroeder | 31 | Wife | — | 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)