FP
Frank Peterson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Knox-County, Illinois
Our Model Tree links this Frank Peterson across the 1920, 1930 and 1940 US Censuses in Knox-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1879), then head of a 3-person household.
Age 61
b. ~1879
Male
Head
Born: Sweden
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Knox-County, Illinois |
| Surname | Peterson |
| Given Name | Frank O |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | Galesburg City |
| 1935 Residence (County) | Knox |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | truck driver |
| Industry | city |
| Class of Worker | PW |
| Hours Worked | 45 |
| Income (1939) | 420 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
| Occupation | Truck Driver |
| Township / Ward | Galesburg City |
| Est. Birth Year | ~1879 |
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 |
|---|---|---|---|---|
| Frank Peterson | Head | — | 61 | ~1879 |
| Robert Peterson | Son | — | 16 | ~1924 |
| Hilma Peterson | Spouse | — | 56 | ~1884 |
Census Appearances
1920
Knox, Illinois
Head, age 40
Knox, Illinois · implied b. ~1880 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Frank A |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Sweden |
| Year of Immigration | 1902 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Carpenter |
| Industry | C B & Q RR |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1930
Knox, Illinois
Head, age 50
Knox, Illinois · implied b. ~1880 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Frank O. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Sweden |
| Naturalization Status | Naturalized |
| Year of Immigration | 1903 |
| Age at First Marriage | 26 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Truck Driver |
| Industry | City |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Swedish |
| Home Owned/Rented | O |
| Home Value / Rent | 6000 |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1940
Knox-County, Illinois
Head, age 61
Knox-County, Illinois · implied b. ~1879 — 3 household members
| Surname | Peterson |
| Given Name | Frank O |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | Galesburg City |
| 1935 Residence (County) | Knox |
| Naturalization Status | Naturalized |
| Occupation | truck driver |
| Industry | city |
| Class of Worker | PW |
| Hours Worked | 45 |
| Income (1939) | 420 |
| 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 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 61 · b. ~1879 · 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 — Knox-County, Illinois
Open full size
1940 US Federal Census — Knox-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00826-00241)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Frank Mehle | 21 | Head | — | Illinois |
| 2 | Marjorie Mehle | 20 | Daughter | — | Illinois |
| 3 | Soren Auman | 29 | Brother | — | Illinois |
| 4 | Sennie Harrison | 54 | Cousin | — | Illinois |
| 5 | William Lippin | 23 | Lodger | — | — |
| 6 | Willard S Thomas | 44 | Head | Conductor | Illinois |
| 7 | Vera G Thomas | 42 | Wife | — | Illinois |
| 8 | Mary Jane Thomas | 19 | Daughter | Singer | Illinois |
| 9 | Sally Ann Thomas | 7 | Daughter | — | Illinois |
| 10 | Mary Hugh | 61 | Mother-in-law | — | Illinois |
| 11 | Seno Pearson | 71 | Head | — | Sweden |
| 12 | Frank Soust | 45 | Lodger | Carpenter | Illinois |
| 13 | Frank Hall | 54 | Head | — | Illinois |
| 14 | Frank Hall | 44 | Husband | Barber | Illinois |
| 15 | Ida Johnson | 78 | Lodger | — | Sweden |
| 16 | Anna Gunn | 72 | Head | — | Sweden |
| 17 | Cornelia Gunn | 37 | Daughter | Bookkeeper | Illinois |
| 18 | Alfred E Knight | 41 | Head | Molder | Wisconsin |
| 19 | Edith G Knight | 30 | Wife | Nurse | Illinois |
| 20 | Frank O Peterson THIS PERSON | 61 | Head | Truck Driver | Sweden |
| 21 | Hilma O Peterson | 56 | Wife | — | Sweden |
| 22 | Robert S Peterson | 16 | Son | — | Illinois |
| 23 | John Boonquat | 63 | Head | Retired | Sweden |
| 24 | Anna Boonquat | 63 | Wife | — | Sweden |
| 25 | John W Boonquat | 26 | Son | Painter | Illinois |
| 26 | Frances Boonquat | 21 | Daughter-in-law | — | Illinois |
| 27 | Daniel Boonquat | 1 | Grandson | — | Illinois |
| 28 | George Angel | 54 | Head | Butcher | Iowa |
| 29 | Etta Angel | 46 | Wife | — | Illinois |
| 30 | Clair Angel | 22 | Son | — | Illinois |
| 31 | Fred Shewell | 43 | Brother-in-law | Meter Reader | Illinois |
| 32 | Hans Suydam | 38 | Head | Installer | Illinois |
| 33 | Helen Suydam | 33 | Wife | — | Illinois |
| 34 | Harriet A Suydam | 8 | Daughter | — | Illinois |
| 35 | Emil Nelson | 58 | Head | Fireman | Missouri |
| 36 | Grace Nelson | 56 | Wife | — | Illinois |
| 37 | Louise Nelson | 50 | Daughter | Stenographer | Illinois |
| 38 | Earl M Chapin | 47 | Head | Baker | Illinois |
| 39 | Lois T Chapin | 39 | Wife | — | Illinois |
| 40 | Frances J Chapin | 16 | Daughter | — | 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)