EP
Ethel Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Boone-County, Iowa
Our Model Tree links this Ethel Peterson across the 1920, 1930 and 1940 US Censuses in Boone-County, Iowa (XGBoost, ~Confirmed), with identified parents Lewis & Louis — first a daughter (b.~1897), then head of a 4-person household.
Age 43
b. ~1897
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Boone-County, Iowa |
| Surname | Peterson |
| Given Name | Ethel |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Boone City |
| 1935 Residence (County) | Boone |
| Additional Details | |
| Occupation | Clerk |
| Industry | Ladies Ready to Wear |
| Class of Worker | PW |
| Hours Worked | 54 |
| Income (1939) | 841 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Clerk |
| Township / Ward | Boone City |
| Est. Birth Year | ~1897 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ethel | Age | Birth yr |
|---|---|---|---|---|
| Louis Peterson | Head | — | 78 | ~1862 |
| Nilma Peterson | Spouse | — | 71 | ~1869 |
| Ethel Peterson | Daughter | — | 43 | ~1897 |
| Edna Peterson | Daughter | — | 36 | ~1904 |
Census Appearances
1920
Boone, Iowa
Daughter, age 23
Boone, Iowa · implied b. ~1897 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Ethel |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Clerk |
| Industry | Dry Goods |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Boone, Iowa
Daughter, age 32
Boone, Iowa · implied b. ~1898 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Ethel |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Iowa |
| Age at First Marriage | S |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Saleslady |
| Industry | Dry-goods |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Boone-County, Iowa
Daughter, age 43
Boone-County, Iowa · implied b. ~1897 — 4 household members
| Surname | Peterson |
| Given Name | Ethel |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Boone City |
| 1935 Residence (County) | Boone |
| Occupation | Clerk |
| Industry | Ladies Ready to Wear |
| Class of Worker | PW |
| Hours Worked | 54 |
| Income (1939) | 841 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Ethel Peterson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Lewis Peterson (~0.92 confidence) and father Louis Peterson (~0.92 confidence) and mother Hilma Peterson (~0.92 confidence) and mother Nilma Peterson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Lewis Peterson
b. ~1863
Source father
● Household
· direct · ~0.92
Father
Louis Peterson
b. ~1862
Source father
● Household
· direct · ~0.92
Mother
Hilma Peterson
b. ~1869
Source mother
● Household
· direct · ~0.92
Mother
Nilma Peterson
b. ~1869
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ethel Peterson
Daughter · 1940 · age 43 · b. ~1897 · Iowa
★ You are viewing this record
Sibling
Edna Peterson
Sibling · 1940 · age 36
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Boone-County, Iowa
Open full size
1940 US Federal Census — Boone-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01141-00311)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Donald F. Krause | 34 | Head | Salesman | Iowa |
| 42 | Martha F. Krause | 35 | Wife | — | Iowa |
| 43 | Donald Don Krause | 1 | Son | — | Iowa |
| 44 | Doyle Crawford | 33 | Head | Implement Sales | Iowa |
| 45 | Alene Crawford | 33 | Wife | — | Iowa |
| 46 | Carla Crawford | 5 | Daughter | — | Iowa |
| 47 | Corrine Crawford | 4 | Daughter | — | Iowa |
| 48 | Frank Hollingworth | 65 | Head | Lawyer | Wisconsin |
| 49 | Kate Hollingworth | 65 | Wife | — | Iowa |
| 50 | Edwin A. Briggs | 36 | Head | Minister | Pennsylvania |
| 51 | Louise Briggs | 42 | Wife | — | Illinois |
| 52 | Oliver Briggs | 14 | Son | — | Iowa |
| 53 | Margaret Briggs | 13 | Daughter | — | Iowa |
| 54 | Ralph Ross Cobb | 58 | Head | Clerk | Indiana |
| 55 | Mary H. Cobb | 61 | Wife | — | Indiana |
| 56 | Flora F. S. Buckley | 80 | Head | — | Minnesota |
| 57 | Alma Peterson | 46 | Housekeeper | Housekeeper | Illinois |
| 58 | Frank H. Beck | 62 | Head | Engineer | Iowa |
| 59 | Hulda Beck | 72 | Wife | — | Illinois |
| 60 | Anna Schroeder | 60 | Head | — | Iowa |
| 61 | Florence M. Dennett | 77 | Lodger | — | Iowa |
| 62 | William C. Rue | 62 | Head | — | Iowa |
| 63 | Angie Rue | 61 | Wife | — | Michigan |
| 64 | Ned Sutton | 46 | Head | Machinist Helper | Iowa |
| 65 | Emma Sutton | 45 | Wife | — | Iowa |
| 66 | May Rice | 78 | Head | — | Iowa |
| 67 | Lillian M. Vosberg | 71 | Nurse | Nurse | Ohio |
| 68 | Samuel G. Jennings | 48 | Head | Solicitor | Iowa |
| 69 | Eva M. Jennings | 40 | Wife | — | Iowa |
| 70 | Veda W. Jennings | 19 | Daughter | Janitor | Iowa |
| 71 | Reel W. Jennings | 13 | Son | — | Iowa |
| 72 | Robert Morris | 24 | Head | Auto Mechanic | Iowa |
| 73 | Doris Morris | 26 | Wife | Maid | Iowa |
| 74 | Walter J. Cozzens | 30 | Head | Manager | S. Dakota |
| 75 | Isalene Cozzens | 30 | Wife | — | Iowa |
| 76 | Anita Cozzens | 5 | Daughter | — | Iowa |
| 77 | Louis Peterson | 78 | Head | — | Sweden |
| 78 | Nilma Peterson | 71 | Wife | — | Sweden |
| 79 | Ethel Peterson THIS PERSON | 43 | Daughter | Clerk | Iowa |
| 80 | Edna Peterson | 36 | Daughter | Bookkeeper | Iowa |
Related Census Records
Pedigree Summary
Ethel + 1 sibling
Gen 1 · 4 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)