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Bertha Peterson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Bertha Peterson across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1886), then head of a 4-person household.
Age 54
b. ~1886
Female
Spouse
Born: Sweden
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Peterson |
| Given Name | Bertha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | City of Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
| Township / Ward | City Of Chicago |
| Est. Birth Year | ~1886 |
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 Bertha | Age | Birth yr |
|---|---|---|---|---|
| Elof Peterson | Head | — | 57 | ~1883 |
| Bertha Peterson | Spouse | — | 54 | ~1886 |
| Barbara Peterson | Daughter | — | 20 | ~1920 |
| Ellert Peterson | Son | — | 21 | ~1919 |
Census Appearances
1920
Cook, Illinois
Spouse, age 35
Cook, Illinois · implied b. ~1885 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Bertha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Sweden |
| Year of Immigration | 1903 |
| 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 | 1911 |
| Birthplace (normalized) | sweden |
1930
Cook, Illinois
Spouse, age 44
Cook, Illinois · implied b. ~1886 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Bertha S |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Sweden |
| Naturalization Status | Naturalized |
| Year of Immigration | 1902 |
| Age at First Marriage | 29 |
| 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
Spouse, age 54
Cook-County, Illinois · implied b. ~1886 — 4 household members
| Surname | Peterson |
| Given Name | Bertha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | City of Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Class of Worker | 0 |
| Highest Grade | No 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 Peterson 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 Peterson
Spouse · 1940 · age 54 · b. ~1886 · Illinois
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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
39 people indexed on this census page (nara:1940:m-t0627-01002-00817)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Margaret Kelly | 24 | Daughter | Office Clerk | Illinois |
| 42 | Charles Mortensen | 56 | Head | Foreman | Illinois |
| 43 | Nilsa Mortensen | 52 | Wife | — | Norway |
| 44 | John Vitanck | 23 | Head | Mechanic | Illinois |
| 45 | Evelyn Vitanck | 19 | Wife | — | Illinois |
| 46 | William Vitanck | 1 | Son | — | Illinois |
| 47 | Allie O'Hray | 32 | Head | Welder | Wisconsin |
| 48 | Virginia O'Hray | 22 | Wife | — | Illinois |
| 49 | Allie, Jr. O'Hray | 2 | Son | — | Illinois |
| 50 | Moved Away | None | — | — | — |
| 52 | George Smith | 54 | Head | Office Clerk | Germany |
| 53 | Maude Smith | 53 | Wife | — | Illinois |
| 54 | Wayne Payne | 39 | Head | Milk Driver | Indiana |
| 55 | Katherine Payne | 34 | Wife | — | Illinois |
| 56 | June Payne | 6 | Daughter | — | Illinois |
| 57 | Albert Kuntz | 53 | Head | Pressman | Ohio |
| 58 | Elizabeth Kuntz | 50 | Wife | — | Missouri |
| 59 | Albert Kuntz | 20 | Son | Butcher | Ohio |
| 60 | Peter Catalan | 38 | Head | Salesman | New York |
| 61 | Elizabeth Catalan | 37 | Wife | — | New York |
| 62 | Joan Catalan | 8 | Daughter | — | Illinois |
| 63 | Francine Catalan | 2 | Daughter | — | Illinois |
| 64 | Anthony Maenza | 46 | Head | Tailor | Italy |
| 65 | Katherine Maenza | 41 | Wife | Tailor | Italy |
| 66 | Antoinette Maenza | 19 | Daughter | Office Clerk | Illinois |
| 67 | Jean Maenza | 15 | Daughter | — | Illinois |
| 68 | Leonard Maenza | 12 | Son | — | Illinois |
| 69 | Samuel Polizzi | 48 | Head | Sprayer | Italy |
| 70 | Frances Polizzi | 36 | Wife | — | New York |
| 71 | Constance Polizzi | 12 | Daughter | — | Illinois |
| 72 | Antoinette Polizzi | 10 | Daughter | — | Illinois |
| 73 | Frank Hess | 53 | Head | Secretary | Illinois |
| 74 | Mabel Hess | 55 | Wife | — | Wisconsin |
| 75 | Elof Peterson | 57 | Head | Cabinet Worker | Sweden |
| 76 | Bertha Peterson THIS PERSON | 54 | Wife | — | Sweden |
| 77 | Ellert Peterson | 21 | Son | — | Illinois |
| 78 | Barbara Peterson | 20 | Daughter | Office Clerk | Illinois |
| 79 | Arthur Giese | 47 | Head | Mechanic | Germany |
| 80 | Anna Giese | 48 | Wife | — | 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)