EP
Ernest Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this Ernest Peterson across the 1920, 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed), with identified parents Emil & Anna — first a son (b.~1915), then head of a 6-person household.
Age 25
b. ~1915
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Peterson |
| Given Name | Ernest |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Occupation | Order Clerk |
| Industry | Wholesale Hardware |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 601 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Order Clerk |
| Township / Ward | Des Moines City |
| Est. Birth Year | ~1915 |
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 Ernest | Age | Birth yr |
|---|---|---|---|---|
| Anna Peterson | Head | — | 59 | ~1881 |
| Evelyn Peterson | Daughter | — | 20 | ~1920 |
| Ernest Peterson | Son | — | 25 | ~1915 |
| Dorothy Peterson | Daughter | — | 17 | ~1923 |
| Edna Peterson | Daughter | — | 23 | ~1917 |
| Evald Peterson | Son | — | 32 | ~1908 |
Census Appearances
1920
Polk, Iowa
Son, age 5
Polk, Iowa · implied b. ~1915 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Ernest |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Polk, Iowa
Son, age 15
Polk, Iowa · implied b. ~1915 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Ernest |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Son, age 25
Polk-County, Iowa · implied b. ~1915 — 6 household members
| Surname | Peterson |
| Given Name | Ernest |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Occupation | Order Clerk |
| Industry | Wholesale Hardware |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 601 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| 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 Ernest Peterson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Emil Peterson (~0.92 confidence) and mother Anna Peterson (~0.92 confidence) and mother Anna Peterson (~0.92 confidence) and mother Anna Peterson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Emil Peterson
b. ~1868
Source father
● Household
· direct · ~0.92
Mother
Anna Peterson
b. ~1881
Source mother
● Household
· direct · ~0.92
Mother
Anna Peterson
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Anna Peterson
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ernest Peterson
Son · 1940 · age 25 · b. ~1915 · Iowa
★ You are viewing this record
Sibling
Edna Peterson
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Evelyn Peterson
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Evald Peterson
Sibling · 1940 · age 32
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Peterson
Sibling · 1940 · age 17
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 — Polk-County, Iowa
Open full size
1940 US Federal Census — Polk-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01196-00386)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Edith F. Large | 41 | Servant | Child Nurse | Iowa |
| 42 | V. L. Newohner | 31 | Head | Electrician | Iowa |
| 43 | Lucille Newohner | 32 | Wife | — | Iowa |
| 44 | Mary J. Newohner | 9 | Daughter | — | Illinois |
| 45 | Virginia A. Newohner | 5 | Daughter | — | Iowa |
| 46 | John U. Johnson | 74 | Head | — | Sweden |
| 47 | Helen Peterson | 26 | Daughter | Stenographer | Iowa |
| 48 | William Peterson | 26 | Son | Clerk | Minnesota |
| 49 | Gladys Campbell | 34 | Daughter | Cashier | Iowa |
| 50 | Myrtle Palmer | 38 | Sister | Clerk | Iowa |
| 51 | Lester R. Leslie | 23 | Nephew | Packer | Minnesota |
| 52 | Joseph H. Schlenvogt | 42 | Lodger | Traveling Salesman | Wisconsin |
| 53 | Kenneth C. Smithson | 25 | Head | Truck Driver | Iowa |
| 54 | Leona Smithson | 27 | Wife | — | Iowa |
| 55 | Roxie M. Smithson | 4 | Daughter | — | Iowa |
| 56 | Josephine Koenigsberger | 40 | Head | Waitress | Iowa |
| 57 | Margaret Koenigsberger | 21 | Daughter | Registrar | Iowa |
| 58 | Mary A. Koenigsberger | 15 | Daughter | — | Iowa |
| 59 | George N. Frink | 81 | Head | Executive | Indiana |
| 60 | Nettie H. Frink | 60 | Wife | — | Iowa |
| 61 | Beulah Kirtley | 28 | Servant | Servant | Iowa |
| 62 | Anna S. Peterson | 59 | Head | — | Sweden |
| 63 | Evald E. Peterson | 32 | Son | Repairman | Sweden |
| 64 | Ernest Peterson THIS PERSON | 25 | Son | Order Clerk | Iowa |
| 65 | Edna Peterson | 23 | Daughter | Clerk-Filing | Iowa |
| 66 | Evelyn Peterson | 20 | Daughter | Mailing Clerk | Iowa |
| 67 | Dorothy Peterson | 17 | Daughter | — | Iowa |
| 68 | Frank E. Gant | 48 | Head | Truck Driver | Iowa |
| 69 | Myrtle E. Gant | 46 | Wife | — | Iowa |
| 70 | Pearl L. Gant | 18 | Daughter | Inspector | Iowa |
| 71 | Nedma E. Longerbone | 54 | Head | Saleslady | Oklahoma |
| 72 | Howard R. Williams | 31 | Nephew | Auto Salesman | Oklahoma |
| 73 | Jeanne Williams | 18 | Niece | — | Iowa |
| 74 | Dusty R. Williams | 0 | Nephew | — | Iowa |
| 75 | Ralph W. Oray | 54 | Lodger | Truck Driver | Iowa |
| 76 | Homer F. Braught | 58 | Head | Bookkeeper | Iowa |
| 77 | Lora M. Braught | 56 | Wife | — | Iowa |
| 78 | Ralph F. Lynn | 33 | Lodger | Stenographer Clerk | Wyoming |
| 79 | Frank A. Day | 77 | Head | — | Michigan |
| 80 | Carrie E. Day | 78 | Wife | — | New York |
Related Census Records
Pedigree Summary
Ernest + 4 siblings
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)