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Bertha Peterson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Grundy-County, Illinois
Our Model Tree links this Bertha Peterson across the 1920, 1930 and 1940 US Censuses in Grundy-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1878), then head of a 6-person household.
Age 62
b. ~1878
Female
Head
Born: Norway
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Grundy-County, Illinois |
| Surname | Peterson |
| Given Name | Bertha |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 62 |
| Marital Status | Widowed |
| Birthplace | Norway |
| 1935 Residence (City) | Morris City |
| 1935 Residence (County) | Grundy |
| Naturalization Status | Naturalized |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth Country | Norway |
| Birthplace (normalized) | norway |
| Township / Ward | Morris City |
| Est. Birth Year | ~1878 |
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 |
|---|---|---|---|---|
| Vernon Peterson | Son | — | 35 | ~1905 |
| Bernice Peterson | Daughter | — | 29 | ~1911 |
| Hazel Peterson | Daughter | — | 24 | ~1916 |
| Helen Peterson | Daughter | — | 24 | ~1916 |
| Ruth Peterson | Daughter | — | 19 | ~1921 |
| Bertha Peterson | Head | — | 62 | ~1878 |
Census Appearances
1920
Kendall, Illinois
Spouse, age 42
Kendall, Illinois · implied b. ~1878 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Bertha F |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Norway |
| Year of Immigration | 1882 |
| 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 |
| Birthplace (normalized) | norway |
1930
Grundy, Illinois
Head, age 53
Grundy, Illinois · implied b. ~1877 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Bertha G |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Widowed |
| Birthplace | Norway |
| Naturalization Status | Naturalized |
| Year of Immigration | 1882 |
| Age at First Marriage | 24 |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Can Read/Write | Yes |
| Mother Tongue | Norwegian |
| Home Owned/Rented | R |
| Home Value / Rent | 30.00 |
| Radio Set | R |
| Birth Country | Norway |
| Birthplace (normalized) | norway |
1940
Grundy-County, Illinois
Head, age 62
Grundy-County, Illinois · implied b. ~1878 — 6 household members
| Surname | Peterson |
| Given Name | Bertha |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 62 |
| Marital Status | Widowed |
| Birthplace | Norway |
| 1935 Residence (City) | Morris City |
| 1935 Residence (County) | Grundy |
| Naturalization Status | Naturalized |
| Class of Worker | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| 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 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
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This person
Anchor record
Bertha Peterson
Head · 1940 · age 62 · b. ~1878 · 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 — Grundy-County, Illinois
Open full size
1940 US Federal Census — Grundy-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00809-00402)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Cecelia Murray | 77 | Wife | — | Illinois |
| 42 | Bertha Peterson THIS PERSON | 62 | Head | — | Norway |
| 43 | Vernon Peterson | 35 | Son | Salesman | Illinois |
| 44 | Bernice Peterson | 29 | Daughter | Stenographer | Illinois |
| 45 | Hazel Peterson | 24 | Daughter | Feeder | Illinois |
| 46 | Helen Peterson | 24 | Daughter | Housework | Illinois |
| 47 | Ruth Peterson | 19 | Daughter | Secretary | Illinois |
| 48 | Ray Unkruty | 37 | Head | Distributor | Illinois |
| 49 | Dorothy Unkruty | 36 | Wife | — | Illinois |
| 50 | Donald Unkruty | 18 | Son | Waiter | Illinois |
| 51 | Pauline Unkruty | 16 | Daughter | — | Illinois |
| 52 | Virginia Unkruty | 14 | Daughter | — | Illinois |
| 53 | John Unkruty | 12 | Son | — | Illinois |
| 54 | Robert Unkruty | 8 | Son | — | Illinois |
| 55 | Ernest Mettille | 47 | Head | Manager | Illinois |
| 56 | Nadine Mettille | 35 | Wife | — | Missouri |
| 57 | Vera Mettille | 4 | Daughter | — | Illinois |
| 58 | Grover Ehrman | 46 | Head | Barber | Illinois |
| 59 | Clara Ehrman | 45 | Wife | — | Illinois |
| 60 | William Barnard | 23 | Head | Assistant Purchasing Agent | Colorado |
| 61 | Carletta Barnard | 24 | Wife | — | Illinois |
| 62 | John H. Mcluckie | 69 | Head | — | Illinois |
| 63 | Mary Mcluckie | 67 | Wife | — | Illinois |
| 64 | Robert Mcluckie | 60 | Brother | Salesman | Illinois |
| 65 | Loretta Seamy | 46 | Head | Nurse | Minnesota |
| 66 | Vincent Seamy | 27 | Son | Butcher Helper | Minnesota |
| 67 | Olin Burkhart | 34 | Son-in-law | Trucking | Illinois |
| 68 | Vera Burkhart | 34 | Daughter | Stenographer | Illinois |
| 69 | Donald Burkhart | 3 | Grandson | — | Illinois |
| 70 | Robert Seamy | 16 | Nephew | — | Minnesota |
| 71 | (Blank) (Blank) | None | (blank) | (Blank) | (blank) |
| 72 | Carl Manyon | 48 | Head | Policeman | Iowa |
| 73 | Clara Manyon | 40 | Wife | — | South Dakota |
| 74 | Margaret Manyon | 18 | Daughter | Assistant Librarian | South Dakota |
| 75 | Marie Manyon | 16 | Daughter | — | South Dakota |
| 76 | Bernice Manyon | 14 | Daughter | — | South Dakota |
| 77 | Doris Manyon | 13 | Daughter | — | Illinois |
| 78 | Annetta Manyon | 8 | Daughter | — | Illinois |
| 79 | Joan Manyon | 5 | Daughter | — | Illinois |
| 80 | Edward Peterson | 37 | Lodger | Labor | 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)