EP
Ernest Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Watonwan-County, Minnesota
Our Model Tree links this Ernest Peterson across the 1920, 1930 and 1940 US Censuses in Watonwan-County, Minnesota (XGBoost, ~Confirmed), with identified parents Alfred & Anna — first a head (b.~1899), then head of a 5-person household.
Age 41
b. ~1899
Male
Head
Born: Minnesota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Watonwan-County, Minnesota |
| Surname | Peterson |
| Given Name | Ernest |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | St. James City |
| 1935 Residence (County) | Watonwan |
| Additional Details | |
| Occupation | Owner Lunch Room |
| Industry | Cafe |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 156 |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Occupation | Owner Lunch Room |
| Township / Ward | St James City |
| Est. Birth Year | ~1899 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ernest | Age | Birth yr |
|---|---|---|---|---|
| Arlo Peterson | Son | — | 13 | ~1927 |
| Dennis Peterson | Daughter | — | 5 | ~1935 |
| Grace Peterson | Spouse | — | 36 | ~1904 |
| Ernest Peterson | Head | — | 41 | ~1899 |
| Day Peterson | Son | — | 11 | ~1929 |
Census Appearances
1920
Watonwan, Minnesota
Son, age 21
Watonwan, Minnesota · implied b. ~1899 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Ernest J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Wisconsin |
| Occupation | Book Keeper |
| Industry | Railroad office |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1930
Watonwan, Minnesota
Head, age 31
Watonwan, Minnesota · implied b. ~1899 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Ernest |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Minnesota |
| Age at First Marriage | 27 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Wisconsin |
| Occupation | Owner & Partner |
| Industry | Candy Kitchen |
| Class of Worker | E |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 25 |
| Radio Set | R |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Watonwan-County, Minnesota
Head, age 41
Watonwan-County, Minnesota · implied b. ~1899 — 5 household members
| Surname | Peterson |
| Given Name | Ernest |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | St. James City |
| 1935 Residence (County) | Watonwan |
| Occupation | Owner Lunch Room |
| Industry | Cafe |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 156 |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| 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 Ernest Peterson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Alfred Peterson (~0.92 confidence) and mother Anna Peterson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Alfred Peterson
b. ~1853
Source father
● Household
· direct · ~0.92
Mother
Anna Peterson
b. ~1856
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ernest Peterson
Head · 1940 · age 41 · b. ~1899 · Minnesota
★ 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 — Watonwan-County, Minnesota
Open full size
1940 US Federal Census — Watonwan-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01967-01123)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Audrey Mae Perty | 14 | Daughter | — | Minnesota |
| 2 | Carl Lamb | 25 | Head | Filling Station Attendant | Minnesota |
| 3 | Esther Lamb | 25 | Wife | — | Minnesota |
| 4 | Sharon Lamb | 1 | Daughter | — | Minnesota |
| 5 | Charles H. Thompson | 57 | Head | Laborer | Minnesota |
| 6 | Hattie Thompson | 57 | Wife | — | Iowa |
| 7 | Florance Thompson | 18 | Daughter | — | Minnesota |
| 8 | Elma Home | 45 | Head | Maid | Minnesota |
| 9 | Muriel Home | 18 | Daughter | Book Keeper | Minnesota |
| 10 | Lilla Fuller | 78 | Head | — | Minnesota |
| 11 | Evelyn Fuller | 29 | Lodger | — | Minnesota |
| 12 | Elmer Berg | 45 | Head | Car Inspector | Minnesota |
| 13 | Anna Berg | 42 | Wife | — | Minnesota |
| 14 | Elizabeth Ann Berg | 14 | Daughter | — | Minnesota |
| 15 | Beverly Berg | 9 | Daughter | — | Minnesota |
| 16 | Augusta Grommes | 38 | Lodger | — | Minnesota |
| 17 | Emma Stark | 53 | Head | — | North Dakota |
| 18 | Harriet Harrison | 22 | Lodger | Teacher | Minnesota |
| 19 | Irene Nelson | 36 | Lodger | Teacher | Minnesota |
| 20 | Carl J. Peterson | 48 | Head | Owner Lunch Room | Minnesota |
| 21 | Anna May Peterson | 39 | Wife | — | Iowa |
| 22 | Ernest Peterson THIS PERSON | 41 | Head | Owner Lunch Room | Minnesota |
| 23 | Grace Peterson | 36 | Wife | — | Minnesota |
| 24 | Arlo P. Peterson | 13 | Son | — | Minnesota |
| 25 | Day P. Peterson | 11 | Son | — | Minnesota |
| 26 | Dennis Ann Peterson | 5 | Daughter | — | Minnesota |
| 27 | Elmer H. Stangeland | 41 | Head | Store Manager | South Dakota |
| 28 | Beryl Stangeland | 37 | Wife | — | South Dakota |
| 29 | Beryl Stangeland | 13 | Daughter | — | South Dakota |
| 30 | Joan Stangeland | 6 | Daughter | — | South Dakota |
| 31 | Roger Stangeland | 3 | Daughter | — | Minnesota |
| 32 | Donna Stangeland | 2 | Daughter | — | Minnesota |
| 33 | Jake Burke | 42 | Head | Mechanic | Minnesota |
| 34 | Elizabeth Burke | 34 | Wife | — | Minnesota |
| 35 | Phyllis Burke | 11 | Daughter | — | Minnesota |
| 36 | Donald Burke | 9 | Son | — | Minnesota |
| 37 | Edward S. Ployden | 55 | Head | Disposal Engineer | Minnesota |
| 38 | Nell Ployden | 51 | Wife | — | Minnesota |
| 39 | La Vonne Ployden | 14 | Daughter | — | Minnesota |
| 40 | Alice Kelly | 78 | Head | — | Illinois |
Pedigree Summary
Ernest
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)