FP
Frank Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Winnebago-County, Illinois
Our Model Tree links this Frank Peterson across the 1920, 1930 and 1940 US Censuses in Winnebago-County, Illinois (XGBoost, ~Confirmed), with identified parents Andrew & Christine — first a head (b.~1893), then head of a 3-person household.
Age 47
b. ~1893
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Winnebago-County, Illinois |
| Surname | Peterson |
| Given Name | Frank H |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Rockford City |
| 1935 Residence (County) | Winnebago |
| Additional Details | |
| Occupation | machine operator |
| Industry | machine shop |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 496 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Machine Operator |
| Township / Ward | Rockford City |
| 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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Frank | Age | Birth yr |
|---|---|---|---|---|
| Vivian Peterson | Daughter | — | 16 | ~1924 |
| Frank Peterson | Head | — | 47 | ~1893 |
| Lillian Peterson | Spouse | — | 45 | ~1895 |
Census Appearances
1920
Winnebago, Illinois
Son, age 26
Winnebago, Illinois · implied b. ~1894 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Frank H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Winnebago, Illinois
Head, age 36
Winnebago, Illinois · implied b. ~1894 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Frank H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 27 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Illinois |
| Occupation | Lathe hand |
| Industry | Machine shop |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 4,200 |
| Radio Set | R |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Winnebago-County, Illinois
Head, age 47
Winnebago-County, Illinois · implied b. ~1893 — 3 household members
| Surname | Peterson |
| Given Name | Frank H |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Rockford City |
| 1935 Residence (County) | Winnebago |
| Occupation | machine operator |
| Industry | machine shop |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 496 |
| 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. Identified parents: father Andrew Peterson (~0.92 confidence) and mother Christine Peterson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Andrew Peterson
b. ~1851
Source father
● Household
· direct · ~0.92
Mother
Christine Peterson
b. ~1851
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Frank Peterson
Head · 1940 · age 47 · b. ~1893 · 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 — Winnebago-County, Illinois
Open full size
1940 US Federal Census — Winnebago-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00913-01037)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Henry Deding | 67 | Head | — | Germany |
| 42 | Augusta R Deding | 62 | Wife | — | Germany |
| 43 | Emma Deding | 35 | Daughter | Hose Trimmer | Illinois |
| 44 | Arthur Deding | 27 | Son | Presser | Illinois |
| 45 | Francis Mincemeyer | 59 | Head | — | Illinois |
| 46 | Eunice R Mincemeyer | 24 | Daughter | Switchboard Operator | Illinois |
| 47 | Charles Mincemeyer | 22 | Son | Grinder | Illinois |
| 48 | Richard Mincemeyer | 20 | Son | Clerk | Illinois |
| 49 | Mary Jane Mincemeyer | 16 | Daughter | — | Illinois |
| 50 | Robert H Wright | 24 | Son in law | Machine Operator | Florida |
| 51 | Helen K Wright | 26 | Daughter | — | Illinois |
| 52 | Block 540 And Division Block 541 | None | — | — | — |
| 53 | Peter Hochstatter | 52 | Head | Blacksmith | Illinois |
| 54 | Mary Hochstatter | 50 | Wife | — | Illinois |
| 55 | Harold Hochstatter | 25 | Son | Teacher | Illinois |
| 56 | Mary Hochstatter | 19 | Daughter | Laborer | Illinois |
| 57 | Dorothy Hochstatter | 18 | Daughter | Laborer | Illinois |
| 58 | Rudolph E Larson | 48 | Head | Foreman | Illinois |
| 59 | Mabel E Larson | 50 | Wife | — | Illinois |
| 60 | Theodore Lotter | 78 | Head | — | Illinois |
| 61 | David V Lotter | 75 | Wife | — | Illinois |
| 62 | Charles Jones | 38 | Head | Mechanic | Colorado |
| 63 | Marion J Jones | 23 | Wife | — | Illinois |
| 64 | Marion J Jones | 2 | Daughter | — | Illinois |
| 65 | Marvin Fendon | 34 | Head | Supt | Iowa |
| 66 | Marie Fendon | 32 | Wife | — | Iowa |
| 67 | Patricia Fendon | 10 | Daughter | — | Illinois |
| 68 | Roger Fendon | 4 | Son | — | Illinois |
| 69 | Frank H Peterson THIS PERSON | 47 | Head | Machine Operator | Illinois |
| 70 | Lillian Peterson | 45 | Wife | — | Wisconsin |
| 71 | Vivian Peterson | 16 | Daughter | — | Illinois |
| 72 | Fred W Jr Zuniger | 31 | Head | Inspector | Illinois |
| 73 | Ruth Zuniger | 28 | Wife | — | Illinois |
| 74 | Jacquelyn Zuniger | 3 | Daughter | — | Illinois |
| 75 | Gwendolyn Zuniger | 1 | Daughter | — | Illinois |
| 76 | Wilbur Stone | 46 | Head | Machine Operator | Illinois |
| 77 | Willmay Stone | 43 | Wife | Shipping Clerk | Illinois |
| 78 | Vera Stone | 17 | Daughter | Laborer | Illinois |
| 79 | Wilbur Jr Stone | 15 | Son | — | Illinois |
| 80 | Betty Stone | 12 | Daughter | — | Illinois |
Pedigree Summary
Frank
Gen 1 · 2 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)