FP
Fred Peterson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Isanti-County, Minnesota
Our Model Tree links this Fred Peterson across the 1910, 1920, 1930 and 1940 US Censuses in Isanti-County, Minnesota (XGBoost, ~Confirmed) — first a head (b.~1882), then head of a 3-person household.
Age 58
b. ~1882
Male
Head
Born: Minnesota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Isanti-County, Minnesota |
| Surname | Peterson |
| Given Name | Fred |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | Spencer Brook |
| 1935 Residence (County) | Isanti |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 66 |
| Income (1939) | 0 |
| Highest Grade | 4 |
| 1935 Residence | Same house |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Occupation | Farmer |
| Township / Ward | Spencer Brook |
| Est. Birth Year | ~1882 |
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 Fred | Age | Birth yr |
|---|---|---|---|---|
| Minnie Peterson | Spouse | — | 57 | ~1883 |
| Andrew Peterson | Son | — | 22 | ~1918 |
| Fred Peterson | Head | — | 58 | ~1882 |
Census Appearances
1910
Isanti, Minnesota
Head, age 28
Isanti, Minnesota · implied b. ~1882
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Peterson |
| Given Name | Fred |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Minnesota |
| Years Married | 2 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Farmer |
| Industry | General Farm |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1920
Isanti, Minnesota
Head, age 38
Isanti, Minnesota · implied b. ~1882 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Fred |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Minnesota |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1930
Isanti, Minnesota
Head, age 48
Isanti, Minnesota · implied b. ~1882 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Fred |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Minnesota |
| Age at First Marriage | 26 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | yes |
| Veteran | No |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Isanti-County, Minnesota
Head, age 58
Isanti-County, Minnesota · implied b. ~1882 — 3 household members
| Surname | Peterson |
| Given Name | Fred |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | Spencer Brook |
| 1935 Residence (County) | Isanti |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 66 |
| Income (1939) | 0 |
| Highest Grade | 4 |
| 1935 Residence | Same house |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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 Fred Peterson across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Fred Peterson
Head · 1940 · age 58 · b. ~1882 · Minnesota
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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 — Isanti-County, Minnesota
Open full size
1940 US Federal Census — Isanti-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01927-01117)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Verne Cook | 21 | Son | — | Minnesota |
| 42 | Birdie Cook | 59 | Mother | — | Illinois |
| 43 | Maurice Cook | 17 | Brother | Farm Laborer | Minnesota |
| 44 | Pearl Cook | 19 | Sister | Maid | Minnesota |
| 45 | Edward S. Ward | 38 | Head | Farmer | Nebraska |
| 46 | Anna Ward | 35 | Wife | — | Iowa |
| 47 | Leonard Ward | 12 | Son | — | Minnesota |
| 48 | Betty Ward | 10 | Daughter | — | Minnesota |
| 49 | Riley Mckenney | 62 | Head | Farmer | Minnesota |
| 50 | Addie Mckenney | 57 | Wife | — | Minnesota |
| 51 | Leon Mckenney | 30 | Son | Farm Laborer | Minnesota |
| 52 | Ona Mckenney | 29 | Daughter | Maid | Minnesota |
| 53 | Leslie Mckenney | 21 | Son | Farm Laborer | Minnesota |
| 54 | Andrew Medin | 66 | Head | Farmer | Sweden |
| 55 | Frances Medin | 61 | Wife | — | Minnesota |
| 56 | Arlance Medin | 26 | Son | Farm Laborer | Minnesota |
| 57 | Clarence Mckenney | 54 | Head | Farmer | Minnesota |
| 58 | Mary Mckenney | 44 | Wife | — | Minnesota |
| 59 | Ruth Mckenney | 7 | Daughter | — | Minnesota |
| 60 | Russell Brands | 23 | Step-son | Welder | Minnesota |
| 61 | Ralph Brands | 20 | Step-son | Farm Laborer | Minnesota |
| 62 | Vernon Brands | 18 | Step-son | Farm Laborer | Minnesota |
| 63 | Walter Treichel | 45 | Head | Laborer | Minnesota |
| 64 | Ida Treichel | 32 | Wife | — | Minnesota |
| 65 | Lester Treichel | 9 | Son | — | Minnesota |
| 66 | Donald Treichel | 5 | Son | — | Minnesota |
| 67 | Ed Johnson | 63 | Head | Farmer | Minnesota |
| 68 | Lillian Johnson | 51 | Wife | — | Minnesota |
| 69 | Marie Johnson | 33 | Daughter | — | Minnesota |
| 70 | Jimmy Johnson | 7 | Grandson | Farm Laborer | Minnesota |
| 71 | Dave Walker | 75 | Head | Farmer | Minnesota |
| 72 | Hattie Walker | 68 | Wife | — | Minnesota |
| 73 | David Walker | 44 | Son | Farm Laborer | Minnesota |
| 74 | Victor Baxter | 49 | Head | Farmer | Minnesota |
| 75 | Hazel Baxter | 35 | Wife | — | Minnesota |
| 76 | Robert Baxter | 11 | Son | — | Minnesota |
| 77 | Robert Baxter | 9 | Son | — | Minnesota |
| 78 | Fred Peterson THIS PERSON | 58 | Head | Farmer | Minnesota |
| 79 | Minnie Peterson | 57 | Wife | — | Minnesota |
| 80 | Andrew Peterson | 22 | Son | Farm Laborer | Minnesota |
Related Census Records
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)