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Nels Peterson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cass-County, Iowa
Our Model Tree links this Nels Peterson across the 1920, 1930 and 1940 US Censuses in Cass-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1891), then head of a 8-person household.
Age 49
b. ~1891
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cass-County, Iowa |
| Surname | Peterson |
| Given Name | Nels N |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Cass |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 70 |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farmer |
| Township / Ward | Grove Twp |
| Est. Birth Year | ~1891 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Nels | Age | Birth yr |
|---|---|---|---|---|
| Maxine Peterson | Daughter | — | 16 | ~1924 |
| Nels Peterson | Head | — | 49 | ~1891 |
| Ralph Peterson | Son | — | 23 | ~1917 |
| Dorothy Peterson | Daughter | — | 18 | ~1922 |
| Edna Peterson | Spouse | — | 46 | ~1894 |
| Elsie Peterson | Daughter | — | 13 | ~1927 |
| Betty Peterson | Daughter | — | 2 | ~1938 |
| Alvina Peterson | Daughter | — | 9 | ~1931 |
Census Appearances
1920
Audubon, Iowa
Head, age 28
Audubon, Iowa · implied b. ~1892 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Petersen |
| Given Name | Nels A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Cass, Iowa
Head, age 39
Cass, Iowa · implied b. ~1891 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Petersen |
| Given Name | Nels C. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 23 |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Cass-County, Iowa
Head, age 49
Cass-County, Iowa · implied b. ~1891 — 8 household members
| Surname | Peterson |
| Given Name | Nels N |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Cass |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 70 |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Iowa |
| 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 Nels Peterson across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Nels Peterson
Head · 1940 · age 49 · b. ~1891 · 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 — Cass-County, Iowa
Open full size
1940 US Federal Census — Cass-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01145-00378)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Catherine Mendel | 64 | Head | Farm Operator | Germany |
| 2 | Roy O Wheatley | 50 | Head | Farmer | South Dakota |
| 3 | Alvina M Wheatley | 46 | Wife | Farmer | Iowa |
| 4 | Ella Mae Lischka | 24 | Daughter | — | Iowa |
| 5 | Joe Lischka | 25 | Son in law | Farmer | Wisconsin |
| 6 | Alvina Mary Lischka | 2 | Granddaughter | — | Iowa |
| 7 | Nels N Peterson THIS PERSON | 49 | Head | Farmer | Iowa |
| 8 | Edna May Peterson | 46 | Wife | — | Iowa |
| 9 | Ralph L Peterson | 23 | Son | Farmer | Iowa |
| 10 | Dorothy M Peterson | 18 | Daughter | Servant | Iowa |
| 11 | Maxine L Peterson | 16 | Daughter | — | Iowa |
| 12 | Elsie M Peterson | 13 | Daughter | — | Iowa |
| 13 | Alvina L Peterson | 9 | Daughter | — | Iowa |
| 14 | Betty Lou Peterson | 2 | Daughter | — | Iowa |
| 15 | Orange L Wheatley | 43 | Head | Farmer | South Dakota |
| 16 | Claribell Wheatley | 42 | Wife | — | Iowa |
| 17 | Zola E Wheatley | 12 | Daughter | — | Iowa |
| 18 | Orange Otis Wheatley | 9 | Son | — | Iowa |
| 19 | Anton Swagel | 45 | Cousin | Riveter, Steel | Wisconsin |
| 20 | Otto Knuep|Kneep | 48 | Head | Farmer | Iowa |
| 21 | Lena M Knuep|Kneep | 50 | Wife | — | Iowa |
| 22 | Donald N Knuep|Kneep | 19 | Son | Farmer | Iowa |
| 23 | Calvin F Knuep|Kneep | 15 | Son | — | Iowa |
| 24 | Bernard R Malone | 33 | Head | Farmer | New York |
| 25 | Charlotte E Malone | 5 | Daughter | — | Iowa |
| 26 | Oscar Young | 46 | Hired man | Farm Hand | Missouri |
| 27 | John Stevens | 48 | Head | Farmer | Iowa |
| 28 | Elsie Stevens | 42 | Wife | — | Iowa |
| 29 | Elmer T Peterson | 28 | Head | Farmer | Iowa |
| 30 | Evalyn Peterson | 28 | Wife | — | Iowa |
| 31 | Karen Peterson | 4 | Daughter | — | Iowa |
| 32 | Frank J Mccourt | 54 | Head | Farmer | Iowa |
| 33 | Leo S Mccourt | 44 | Brother | Farmer | Iowa |
| 34 | John W Sasteen | 54 | Head | Farmer | Iowa |
| 35 | Amelia J Sasteen | 51 | Wife | — | North Dakota |
| 36 | Frank M Bailey | 44 | Head | Farmer | Iowa |
| 37 | Barbara E Bailey | 35 | Wife | — | Iowa |
| 38 | Frances L Bailey | 14 | Daughter | — | Iowa |
| 39 | Ardis L Bailey | 10 | Daughter | — | Iowa |
| 40 | Richard J Bailey | 8 | Son | — | Iowa |
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)