BF
Bertha Fisher — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Bertha Fisher across the 1910, 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1884), then head of a 3-person household.
Age 56
b. ~1884
Female
Spouse
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Fisher |
| Given Name | Bertha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | City of Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Hours Worked | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | City Of Chicago |
| Est. Birth Year | ~1884 |
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 Bertha | Age | Birth yr |
|---|---|---|---|---|
| George Fisher | Head | — | 58 | ~1882 |
| George Fisher | Son | — | 30 | ~1910 |
| Bertha Fisher | Spouse | — | 56 | ~1884 |
Census Appearances
1910
Cook, Illinois
Spouse, age 27
Cook, Illinois · implied b. ~1883 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fischer |
| Given Name | Bertha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Illinois |
| Years Married | 5 |
| Children Born | 1 |
| Children Living | 1 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Cigar Manufacturer |
| Industry | Proprietor |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Cook, Illinois
Spouse, age 36
Cook, Illinois · implied b. ~1884 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fischer |
| Given Name | Bertha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Other, age 46
Cook, Illinois · implied b. ~1884 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fischer |
| Given Name | Bertha |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 21 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Chauffeur |
| Industry | Oil truck |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Spouse, age 56
Cook-County, Illinois · implied b. ~1884 — 3 household members
| Surname | Fisher |
| Given Name | Bertha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | City of Chicago |
| 1935 Residence (County) | Cook |
| Hours Worked | 0 |
| Highest Grade | Hs 4 |
| 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 Bertha Fisher across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Bertha Fisher
Spouse · 1940 · age 56 · b. ~1884 · 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-t0627-01002-00814)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Steve Smith | 72 | Lodger | — | Hungary |
| 2 | Lester Behrendt | 26 | Head | Manager | Illinois |
| 3 | Jacquelin Behrendt | 26 | Wife | Elevator Operator | Illinois |
| 4 | John Hoeft | 30 | Head | Delivery Man | Illinois |
| 5 | Lauretta Hoeft | 28 | Wife | — | Illinois |
| 6 | Dale Hoeft | 5 | Son | — | Illinois |
| 7 | Arlene Hoeft | 0 | Daughter | — | Illinois |
| 8 | August Ohlberg | 53 | Head | Carpenter | Sweden |
| 9 | Ellen Ohlberg | 57 | Wife | — | Sweden |
| 10 | Arne Ohlberg | 23 | Son | Color Mixer | Sweden |
| 11 | William Kraemer | 38 | Head | — | Poland |
| 12 | Caroline Kraemer | 31 | Wife | Carpenter | Illinois |
| 13 | William Jr. Kraemer | 5 | Son | — | Illinois |
| 14 | Donald Kraemer | 3 | Son | — | Illinois |
| 15 | John Fischer | 52 | Head | Machinist | Hungary |
| 16 | Mary Fischer | 48 | Wife | — | Hungary |
| 17 | Nicholas Beamish | 24 | Nephew | All Around Man | Rumania |
| 18 | Otto Hermann | 50 | Head | Hardware Merchant | Illinois |
| 19 | Sophie Hermann | 51 | Wife | — | Illinois |
| 20 | Otto Hermann | 19 | Son | Office Clerk | Illinois |
| 21 | Emma Hermann | 16 | Daughter | — | Illinois |
| 22 | Rudette Plastija | 4 | Niece | — | Ohio |
| 23 | Charles Ballert | 34 | Head | Junior Engineer | Illinois |
| 24 | Elaine Ballert | 28 | Wife | — | Illinois |
| 25 | Sue Ballert | 5 | Daughter | — | Illinois |
| 26 | Joyce Ballert | 2 | Daughter | — | Illinois |
| 27 | George Fisher | 58 | Head | — | Illinois |
| 28 | Bertha Fisher THIS PERSON | 56 | Wife | — | Illinois |
| 29 | George Fisher | 30 | Son | Clerk | Illinois |
| 30 | Matilda Baisch | 50 | Head | — | Germany |
| 31 | Amelia Maday | 70 | Sister | — | Germany |
| 32 | Haig Saldjian | 42 | Head | Proprietor | Armenia |
| 33 | Virginia Saldjian | 27 | Wife | — | Armenia |
| 34 | Rose Saldjian | 8 | Daughter | — | Illinois |
| 35 | Agnes Saldjian | 3 | Daughter | — | Illinois |
| 36 | Agnes Vahian | 44 | Mother | Seamstress | Armenia |
| 37 | Charles Rueck | 47 | Head | Proprietor | Illinois |
| 38 | Willemena Rueck | 19 | Mother | Packer | Illinois |
| 39 | Harold Rueck | 12 | Son | — | Illinois |
| 40 | Willemena Rueck | 82 | Mother | — | Germany |
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)