FP
Frank Peterson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Frank Peterson across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1893), then head of a 7-person household.
Age 47
b. ~1893
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Peterson |
| Given Name | Frank |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Cook |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Maintenance |
| Industry | Retail Dept Store |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1340 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Maintenance |
| Est. Birth Year | ~1893 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Frank | Age | Birth yr |
|---|---|---|---|---|
| Mildred Peterson | Daughter | — | 22 | ~1918 |
| Dorothy Peterson | Daughter | — | 17 | ~1923 |
| Helen Peterson | Daughter | — | 20 | ~1920 |
| Frank Peterson | Head | — | 47 | ~1893 |
| Richard Peterson | Son | — | 7 | ~1933 |
| Frank Peterson | Son | — | 19 | ~1921 |
| Rose Peterson | Spouse | — | 42 | ~1898 |
Census Appearances
1920
Cook, Illinois
Head, age 27
Cook, Illinois · implied b. ~1893 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Frank |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Machinist |
| Industry | Yeast Co |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Head, age 37
Cook, Illinois · implied b. ~1893 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Frank C. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 22 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Sweden |
| Occupation | Machinist |
| Industry | Yeast Bakers |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 35 |
| Radio Set | R |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Head, age 47
Cook-County, Illinois · implied b. ~1893 — 7 household members
| Surname | Peterson |
| Given Name | Frank |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Cook |
| 1935 Residence (County) | Cook |
| Occupation | Maintenance |
| Industry | Retail Dept Store |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1340 |
| Highest Grade | No 8 |
| 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 Frank 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
Frank Peterson
Head · 1940 · age 47 · b. ~1893 · 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-t0627-00991-00098)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Raymond Anderson | 7 | Son | — | Illinois |
| 42 | Kenneth Anderson | 4 | Son | — | Illinois |
| 43 | Albert M Thielen | 57 | Head | Office Manager | Luxembourg |
| 44 | Julia Thielen | 48 | Wife | — | Luxembourg |
| 45 | Paul Thielen | 25 | Son | — | Illinois |
| 46 | Frank Peterson THIS PERSON | 47 | Head | Maintenance | Illinois |
| 47 | Rose Peterson | 42 | Wife | — | Wisconsin |
| 48 | Mildred Peterson | 22 | Daughter | Bookkeeper | Illinois |
| 49 | Helen Peterson | 20 | Daughter | Labor | Illinois |
| 50 | Frank Peterson | 19 | Son | Laboratory | Illinois |
| 51 | Dorothy Peterson | 17 | Daughter | — | Illinois |
| 52 | Richard Peterson | 7 | Son | — | Illinois |
| 53 | Theodore Bettis | 47 | Head | Mechanic | Illinois |
| 54 | Clara Bettis | 43 | Wife | — | Illinois |
| 55 | Lorraine Bettis | 19 | Daughter | Pricer | Illinois |
| 56 | Vivian Bettis | 17 | Daughter | — | Illinois |
| 57 | Robert Bettis | 13 | Son | — | Illinois |
| 58 | Walter Ozyminski | 33 | Head | Supervisor | Illinois |
| 59 | Theresa Ozyminski | 33 | Wife | — | Indiana |
| 60 | Louise Ozyminski | 12 | Daughter | — | Illinois |
| 61 | Theresa Ozyminski | 7 | Daughter | — | Illinois |
| 62 | Robert Ozyminski | 5 | Son | — | Illinois |
| 63 | Stanley | 82 | Father-in-law | — | Poland |
| 64 | Helen | 50 | Sister-in-law | — | Illinois |
| 65 | George | 46 | Brother-in-law | Order Filler | Illinois |
| 66 | Theodore Padthe | 53 | Head | Accountant | Illinois |
| 67 | Clara Padthe | 56 | Wife | — | Illinois |
| 68 | Stella Szalaj | 54 | Head | Seamstress | Poland |
| 69 | Viola Szalaj | 23 | Daughter | Assembler | Illinois |
| 70 | Camille Szalaj | 19 | Daughter | Typist | Illinois |
| 71 | Joseph Hankowski | 30 | Head | Clerk | Illinois |
| 72 | Jean Hankowski | 30 | Wife | — | Poland |
| 73 | Joan Hankowski | 4 | Daughter | — | Illinois |
| 74 | Pauline Kutza | 51 | Head | Hand Finisher | Illinois |
| 75 | Avertine Kutza | 21 | Daughter | Stenographer | Illinois |
| 76 | John Jr Natchke | 24 | Son-in-law | Maintenance | Illinois |
| 77 | Agnes Natchke | 27 | Daughter | — | Illinois |
| 78 | Mary Ann Natchke | 1 | Granddaughter | — | Illinois |
| 79 | Leo Hamrodt | 47 | Head | Tool + Die Maker | Illinois |
| 80 | Martha Hamrodt | 46 | 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)