MP
Mabel Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Mabel Peterson across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Carl & Peder — first a daughter (b.~1890), then head of a 2-person household.
Age 50
b. ~1890
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Peterson |
| Given Name | Mabel |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Private Secretary |
| Industry | Research Office |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1534 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Private Secretary |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1890 |
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 Mabel | Age | Birth yr |
|---|---|---|---|---|
| Carl Peterson | Head | — | 74 | ~1866 |
| Mabel Peterson | Daughter | — | 50 | ~1890 |
Census Appearances
1920
Cook, Illinois
Daughter, age 30
Cook, Illinois · implied b. ~1890 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Petersen |
| Given Name | Mabel E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Stenographer |
| Industry | Bank |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Daughter, age 40
Cook, Illinois · implied b. ~1890 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Mabel |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Housekeeper |
| Industry | Apartment House |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 50
Cook-County, Illinois · implied b. ~1890 — 2 household members
| Surname | Peterson |
| Given Name | Mabel |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | Private Secretary |
| Industry | Research Office |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1534 |
| Highest Grade | No 6 |
| 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 Mabel Peterson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Carl Peterson (~0.92 confidence) and father Peder Petersen (~0.92 confidence) and mother Caroline Petersen (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Carl Peterson
b. ~1866
Source father
● Household
· direct · ~0.92
Father
Peder Petersen
b. ~1857
Source father
● Household
· direct · ~0.92
Mother
Caroline Petersen
b. ~1867
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mabel Peterson
Daughter · 1940 · age 50 · b. ~1890 · 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-t0627-00984-00314)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Arthur Abraham | 46 | Head | Printer | Illinois |
| 2 | Clara Abraham | 46 | Wife | — | Illinois |
| 3 | Wilma Abraham | 19 | Daughter | Bookkeeper | Illinois |
| 4 | Arthur Abraham | 16 | Son | — | Illinois |
| 5 | Oscar Hallemark | 72 | Head | Janitor | Norway |
| 6 | Jennie Hallemark | 71 | Wife | — | Sweden |
| 7 | Anton Widsted | 74 | Roomer | — | Norway |
| 8 | Edward Oslay | 47 | Head | Paint Reducer | Illinois |
| 9 | Mabel Oslay | 45 | Wife | — | Wisconsin |
| 10 | Edward Oslay | 19 | Son | Sewing Machine | Illinois |
| 11 | Alice Cohen | 24 | Daughter | — | Illinois |
| 12 | Sidney Cohen | 40 | Son-in-law | Wholesale Upholsterer | Illinois |
| 13 | Donald Cohen | 6 | Grandson | — | Illinois |
| 14 | John Jacobson | 49 | Head | Carpenter | Norway |
| 15 | Helen Jacobson | 46 | Wife | — | Illinois |
| 16 | Ray Jacobson | 15 | Son | — | Illinois |
| 17 | Ralph Jacobson | 14 | Son | — | Illinois |
| 18 | Edward Jacobson | 10 | Son | — | Illinois |
| 19 | Adolph Bakken | 53 | Head | Brick Layer | Norway |
| 20 | Berdie Bakken | 47 | Wife | — | Illinois |
| 21 | Hans Anderson | 82 | Father-in-law | — | Norway |
| 22 | Lauretta Hoover | 41 | Sister-in-law | — | Illinois |
| 23 | Leopold Brokop | 46 | Head | Asst Engineer | Poland |
| 24 | Agnes Brokop | 35 | Wife | — | Poland |
| 25 | Doris Brokop | 15 | Daughter | — | Illinois |
| 26 | Alice Brokop | 13 | Daughter | — | Illinois |
| 27 | Alice Brokop | 5 | Daughter | — | Illinois |
| 28 | Fred Hanson | 51 | Head | Yard Master | Denmark |
| 29 | Norah Hanson | 51 | Wife | — | Illinois |
| 30 | Florence Hanson | 26 | Daughter | Typist | Illinois |
| 31 | Fred Hanson | 25 | Son | Shipping Clerk | Illinois |
| 32 | Bob Hanson | 20 | Son | Office Boy | Illinois |
| 33 | Richard Hanson | 18 | Son | — | Illinois |
| 34 | Carl Peterson | 74 | Head | — | Norway |
| 35 | Mabel Peterson THIS PERSON | 50 | Daughter | Private Secretary | Illinois |
| 36 | Barclay Walsh | 48 | Head | Structural Iron | Pennsylvania |
| 37 | Eleanor Walsh | 43 | Wife | — | Illinois |
| 38 | Barclay Walsh | 23 | Son | Steel Worker | Illinois |
| 39 | James Walsh | 21 | Son | Glass Edger | Illinois |
| 40 | Florence Walsh | 18 | Daughter | — | Illinois |
Pedigree Summary
Mabel
Gen 1 · 3 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)