EP
Ellen Peterson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Ellen Peterson across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1891), then head of a 2-person household.
Age 49
b. ~1891
Female
Spouse
Born: Sweden
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Peterson |
| Given Name | Ellen |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1891 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ellen | Age | Birth yr |
|---|---|---|---|---|
| Walter Peterson | Son | — | 17 | ~1923 |
| Ellen Peterson | Spouse | — | 49 | ~1891 |
Census Appearances
1920
Cook, Illinois
Spouse, age 27
Cook, Illinois · implied b. ~1893 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Ellen |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Sweden |
| Year of Immigration | 1909 |
| Naturalization Status | Alien |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1930
Cook, Illinois
Spouse, age 38
Cook, Illinois · implied b. ~1892 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Ellen |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Sweden |
| Naturalization Status | Alien |
| Year of Immigration | 1909 |
| Age at First Marriage | 24 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | none |
| Can Read/Write | Yes |
| Mother Tongue | Swedish |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1940
Cook-County, Illinois
Spouse, age 49
Cook-County, Illinois · implied b. ~1891 — 2 household members
| Surname | Peterson |
| Given Name | Ellen |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Hours Worked | 0 |
| Income (1939) | 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 Ellen 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
Ellen Peterson
Spouse · 1940 · age 49 · b. ~1891 · 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
40 people indexed on this census page (nara:1940:m-t0627-01001-00169)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ellen Peterson THIS PERSON | 49 | wife | — | Sweden |
| 2 | Walter Peterson | 17 | son | — | Illinois |
| 3 | Henry Hoffstedt | 47 | head | Repairman | Illinois |
| 4 | Virgil Hoffstedt | 17 | daughter | — | Illinois |
| 5 | Walter Hoffstedt | 40 | brother | Mach. Operator | Illinois |
| 6 | Charles Levine | 34 | head | Prop. Garage | Wisconsin |
| 7 | Agnes Levine | 35 | wife | — | Illinois |
| 8 | Ralph Levine | 5 | son | — | Illinois |
| 9 | Nels M Nelson | 55 | head | Examiner | Illinois |
| 10 | Clara Nelson | 53 | wife | — | Sweden |
| 11 | Stanley Nelson | 25 | son | Mach. Operator | Illinois |
| 12 | Bernice Nelson | 21 | daughter | Stenographer | Illinois |
| 13 | Newell J Nordstrom | 34 | head | Salesman | Kansas |
| 14 | Eleanor Nordstrom | 34 | wife | — | Illinois |
| 15 | Nancy June Nordstrom | 9 | daughter | — | Illinois |
| 16 | John Eberhardt | 77 | father-in-law | — | Germany |
| 17 | Edwin Bruchle | 35 | head | Accountant | Illinois |
| 18 | Edith Bruchle | 40 | wife | — | Illinois |
| 19 | Vernon Bruchle | 11 | son | — | Illinois |
| 20 | Marilyn Bruchle | 8 | daughter | — | Illinois |
| 21 | Emil Berglund | 67 | head | — | Sweden |
| 22 | George Berglund | 35 | son | — | Sweden |
| 23 | Cecil Callahan | 27 | head | Photographer | North Dakota |
| 24 | Bernice Callahan | 25 | wife | — | Illinois |
| 25 | Carol Callahan | 2 | daughter | — | Illinois |
| 26 | Frank Trondel | 49 | father-in-law | Roofer | Illinois |
| 27 | Clara C. Hack | 68 | head | — | Illinois |
| 28 | Clara B. Hack | 45 | daughter | Priv. Secretary | Illinois |
| 29 | Albert Hack | 45 | son | Prop. | Illinois |
| 30 | Barbara Hack | 38 | daughter | Stenographer | Illinois |
| 31 | Jack Hack | 37 | son | Roofer | Illinois |
| 32 | John Hack | 35 | son | Shipping Clerk | Illinois |
| 33 | Gustav C. Lind | 59 | head | Mach. Operator | Sweden |
| 34 | Beda Lind | 58 | wife | — | Sweden |
| 35 | Thelma Lind | 25 | daughter | Librarian | Illinois |
| 36 | Clifford Lind | 19 | son | — | Illinois |
| 37 | Reuben Johnson | 44 | head | Machinist | Illinois |
| 38 | Ida Johnson | 49 | wife | — | Sweden |
| 39 | Raymond Johnson | 17 | son | — | Illinois |
| 40 | Carl Johnson | 11 | son | — | 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)