EP
Ernest Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Buena-Vista-County, Iowa
Our Model Tree links this Ernest Peterson across the 1920, 1930 and 1940 US Censuses in Buena-Vista-County, Iowa (XGBoost, ~Confirmed), with identified parents Charles & Elmer — first a son (b.~1914), then head of a 3-person household.
Age 26
b. ~1914
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Buena-Vista-County, Iowa |
| Surname | Peterson |
| Given Name | Ernest |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Elk Township |
| 1935 Residence (County) | Buena Vista |
| Additional Details | |
| Occupation | farm laborer |
| Industry | farm |
| Class of Worker | NP |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | H-2 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farm Laborer |
| Township / Ward | Elk Township |
| Est. Birth Year | ~1914 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ernest | Age | Birth yr |
|---|---|---|---|---|
| Hulda Peterson | Spouse | — | 54 | ~1886 |
| Elmer Peterson | Head | — | 54 | ~1886 |
| Ernest Peterson | Son | — | 26 | ~1914 |
Census Appearances
1920
Buena Vista, …
Son, age 4
Buena Vista, Iowa · implied b. ~1916 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Earnest G R |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Buena Vista, …
Son, age 15
Buena Vista, Iowa · implied b. ~1915 — 3 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 |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Buena-Vista-County, Iowa
Son, age 26
Buena-Vista-County, Iowa · implied b. ~1914 — 3 household members
| Surname | Peterson |
| Given Name | Ernest |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Elk Township |
| 1935 Residence (County) | Buena Vista |
| Occupation | farm laborer |
| Industry | farm |
| Class of Worker | NP |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | H-2 |
| 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 Ernest Peterson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Charles Peterson (~0.92 confidence) and father Elmer Peterson (~0.92 confidence) and mother Clara Peterson (~0.92 confidence) and mother Hulda Peterson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charles Peterson
b. ~1867
Source father
● Household
· direct · ~0.92
Father
Elmer Peterson
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Clara Peterson
b. ~1867
Source mother
● Household
· direct · ~0.92
Mother
Hulda Peterson
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ernest Peterson
Son · 1940 · age 26 · b. ~1914 · Iowa
★ 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 — Buena-Vista-County, Iowa
Open full size
1940 US Federal Census — Buena-Vista-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01143-00082)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Myrtle Jensen | 31 | Wife | — | Kentucky |
| 42 | Gordon Jensen | 10 | Son | — | Iowa |
| 43 | Shirley Ann Jensen | 7 | Daughter | — | Iowa |
| 44 | Arthur Cornwall | 40 | Head | Farmer | Iowa |
| 45 | Esther Cornwall | 40 | Wife | Housewife | Iowa |
| 46 | Pauline Cornwall | 15 | Daughter | — | Iowa |
| 47 | Dennis Cornwall | 12 | Son | — | Iowa |
| 48 | Harold Cornwall | 40 | Head | Farmer | Iowa |
| 49 | Mildred Cornwall | 32 | Wife | Housewife | Ohio |
| 50 | Marjorie Ann Cornwall | 11 | Daughter | — | Iowa |
| 51 | Wanda Jean Cornwall | 9 | Daughter | — | Iowa |
| 52 | Gordon Cornwall | 4 | Son | — | Iowa |
| 53 | Arlo Nelson | 25 | Head | Farmer | Iowa |
| 54 | Elsie Nelson | 21 | Wife | Housewife | Iowa |
| 55 | Larry Arlan Nelson | 0 | Son | — | Iowa |
| 56 | Gust Peterson | 60 | Head | Farmer | Sweden |
| 57 | Ivy N. L. Peterson | 54 | Wife | Housewife | Iowa |
| 58 | Melvin F. Peterson | 29 | Son | Farm Laborer | Iowa |
| 59 | Ardell W. Peterson | 20 | Son | Housewife | Iowa |
| 60 | F. E. Wahlstrom | 46 | Head | Farmer | Iowa |
| 61 | Ellen Wahlstrom | 43 | Wife | Housewife | Iowa |
| 62 | Carl Nord | 55 | Head | Farmer | Sweden |
| 63 | Ellen Nord | 52 | Wife | Housewife | Sweden |
| 64 | Lou Vanderhoff | 45 | Head | Farmer | Iowa |
| 65 | Annie Vanderhoff | 49 | Sister | Housewife | Iowa |
| 66 | Annie Vanderhoff | 87 | Mother | Housewife | Germany |
| 67 | L. C. Kraemer | 55 | Head | Farmer | Iowa |
| 68 | Christine Kraemer | 57 | Wife | Housewife | Denmark |
| 69 | Clifford Kraemer | 26 | Son | Farmer | Iowa |
| 70 | Norman Kraemer | 23 | Son | Farm Laborer | Iowa |
| 71 | Richard Kraemer | 10 | Son | — | Iowa |
| 72 | Elmer A. Peterson | 54 | Head | Farmer | Sweden |
| 73 | Hulda Peterson | 54 | Wife | Housewife | Sweden |
| 74 | Ernest Peterson THIS PERSON | 26 | Son | Farm Laborer | Iowa |
| 75 | Nels Kibsgaard | 58 | Head | Farmer | Denmark |
| 76 | Anna Kibsgaard | 51 | Wife | Housewife | Minnesota |
| 77 | Walter O. Larsen | 66 | Head | Farmer | Denmark |
| 78 | Annie Larsen | 52 | Wife | Housewife | Iowa |
| 79 | Ray Larsen | 23 | Son | Farm Laborer | Iowa |
| 80 | Johnnie Larsen | 17 | Son | Farm Laborer | Iowa |
Pedigree Summary
Ernest
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)