BP
Bertha Peterson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Washington-County, Minnesota
Our Model Tree links this Bertha Peterson across the 1900, 1910, 1920, 1930 and 1940 US Censuses in Washington-County, Minnesota (XGBoost, ~Confirmed) — first a head (b.~1860), then head of a 6-person household.
Age 80
b. ~1860
Female
Head
Born: Norway
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Washington-County, Minnesota |
| Surname | Peterson |
| Given Name | Bertha |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 80 |
| Marital Status | Widowed |
| Birthplace | Norway |
| 1935 Residence (City) | Bayport Village |
| 1935 Residence (County) | Washington |
| Naturalization Status | Naturalized |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same house |
| Birth Country | Norway |
| Birthplace (normalized) | norway |
| Township / Ward | Bayport Village |
| Est. Birth Year | ~1860 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Bertha | Age | Birth yr |
|---|---|---|---|---|
| Patricia Peterson | Daughter | — | 7 | ~1933 |
| Leonard Peterson | Son | — | 43 | ~1897 |
| Bert Peterson | Son | — | 34 | ~1906 |
| John Peterson | Son | — | 51 | ~1889 |
| Mildred Peterson | Other | — | 35 | ~1905 |
| Bertha Peterson | Head | — | 80 | ~1860 |
Census Appearances
1900
Washington, Minnesota
Spouse, age 41
Washington, Minnesota · implied b. ~1859 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Bertha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Norway |
| Birth Month | Oct |
| Birth Year | 1859 |
| Year of Immigration | 1886 |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Norway |
| Birthplace (normalized) | norway |
1910
Washington, Minnesota
Spouse, age 50
Washington, Minnesota · implied b. ~1860 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Bertha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Norway |
| Years Married | 22 |
| Children Born | 7 |
| Children Living | 6 |
| Year of Immigration | 1886 |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Birth Country | Norway |
| Birthplace (normalized) | norway |
1920
Washington, Minnesota
Spouse, age 60
Washington, Minnesota · implied b. ~1860 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Bertha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Norway |
| Year of Immigration | 1886 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Norwegian |
| Birth Country | Norway |
| Year of Naturalization | 1886 |
| Birthplace (normalized) | norway |
1930
Washington, Minnesota
Other, age 70
Washington, Minnesota · implied b. ~1860 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Bertha |
| Relationship to Head | Head-H |
| Sex | F |
| Color / Race | White |
| Age | 70 |
| Marital Status | Widowed |
| Birthplace | Norway |
| Naturalization Status | Naturalized |
| Year of Immigration | 1886 |
| Age at First Marriage | 28 |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Can Read/Write | Yes |
| Mother Tongue | Norwegian |
| Home Owned/Rented | O |
| Home Value / Rent | 5000 |
| Radio Set | R |
| Birth Country | Norway |
| Birthplace (normalized) | norway |
1940
Washington-County, Minnesota
Head, age 80
Washington-County, Minnesota · implied b. ~1860 — 6 household members
| Surname | Peterson |
| Given Name | Bertha |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 80 |
| Marital Status | Widowed |
| Birthplace | Norway |
| 1935 Residence (City) | Bayport Village |
| 1935 Residence (County) | Washington |
| Naturalization Status | Naturalized |
| Class of Worker | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same house |
| Birth Country | Norway |
| Birthplace (normalized) | norway |
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 Bertha Peterson across 5 US Census years (1900, 1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Bertha Peterson
Head · 1940 · age 80 · b. ~1860 · 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 — Washington-County, Minnesota
Open full size
1940 US Federal Census — Washington-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01967-00057)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Hollis Seim | 2 | Son | — | Minnesota |
| 42 | Parent Willis Seim | 22 | Boarder | Helper | Wisconsin |
| 43 | Carl Schalander | 53 | Head | Machine Operator | Sweden |
| 44 | Auda Schalander | 56 | Wife | — | Sweden |
| 45 | Elizabeth Schalander | 27 | Daughter | Stenographer | Minnesota |
| 46 | Harry Schalander | 23 | Son | Factory Worker | Minnesota |
| 47 | John Schalander | 17 | Son | — | Minnesota |
| 48 | Edward Lehner | 51 | Head | Warehouseman | Germany |
| 49 | Bertha Lehner | 46 | Wife | — | Minnesota |
| 50 | Mildred Lehner | 51 | Sister | New Worker | Minnesota |
| 51 | Granville Peterson | 42 | Head | Machinist | Minnesota |
| 52 | Ella A. Peterson | 41 | Wife | — | Minnesota |
| 53 | Richard Peterson | 20 | Son | Woodworker | Minnesota |
| 54 | Kenneth Peterson | 19 | Son | Laborer | Minnesota |
| 55 | Bertha Peterson THIS PERSON | 80 | Head | — | Norway |
| 56 | John Peterson | 51 | Son | Laborer | Minnesota |
| 57 | Leonard Peterson | 43 | Son | Machine Shop | Minnesota |
| 58 | Bert Peterson | 34 | Son | Engineer | Minnesota |
| 59 | Mildred Peterson | 35 | Daughter-in-law | — | Minnesota |
| 60 | Patricia Peterson | 7 | Daughter | — | Minnesota |
| 61 | Carl A. Johnson | 40 | Head | Laborer | Minnesota |
| 62 | Earl K. Johnson | 38 | Brother | Laborer | Minnesota |
| 63 | Emma Morrison | 67 | Aunt | — | Sweden |
| 64 | Robert Hartman | 39 | Brother-in-law | Grocery Clerk | Minnesota |
| 65 | Ellen Hartman | 35 | Sister | Bookkeeper | Minnesota |
| 66 | Albin Carlson | 71 | Head | — | Sweden |
| 67 | Anna Carlson | 64 | Wife | — | Wisconsin |
| 68 | Theodore Carlson | 31 | Son | Laborer | Minnesota |
| 69 | Loretta Carlson | 19 | Daughter-in-law | — | Minnesota |
| 70 | George E. Horner | 55 | Head | Engineer | Wisconsin |
| 71 | Julia Horner | 55 | Wife | — | Wisconsin |
| 72 | Bertram Trickars | 31 | Head | Clerk Factory Office | Minnesota |
| 73 | Hazel D. Trickars | 25 | Wife | — | Wisconsin |
| 74 | Sally Mae Trickars | 4 | Daughter | — | Minnesota |
| 75 | Ann Marie Trickars | 0 | Daughter | 0 | Minnesota |
| 76 | Elmer Casperson | 34 | Head | Bundler | Minnesota |
| 77 | Mable Casperson | 34 | Wife | — | Minnesota |
| 78 | Wilbur Casperson | 16 | Son | Laborer | Wisconsin |
| 79 | Virginia Casperson | 14 | Daughter | — | Minnesota |
| 80 | Helen Casperson | 12 | Daughter | — | Minnesota |
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)