PP
Peter Peterson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Palo-Alto-County, Iowa
Our Model Tree links this Peter Peterson across the 1920, 1930 and 1940 US Censuses in Palo-Alto-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1888), then head of a 5-person household.
Age 52
b. ~1888
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Palo-Alto-County, Iowa |
| Surname | Peterson |
| Given Name | Peter G. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Lost Island Twp |
| 1935 Residence (County) | Palo Alto |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farmer |
| Township / Ward | Lost Island Twp |
| Est. Birth Year | ~1888 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Peter | Age | Birth yr |
|---|---|---|---|---|
| Doris Peterson | Daughter | — | 15 | ~1925 |
| Peter Peterson | Head | — | 52 | ~1888 |
| Norman Peterson | Son | — | 20 | ~1920 |
| Earl Peterson | Son | — | 23 | ~1917 |
| Elsie Peterson | Spouse | — | 43 | ~1897 |
Census Appearances
1920
Palo Alto, …
Head, age 32
Palo Alto, Iowa · implied b. ~1888 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Peter G. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | Emp |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Danish |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Palo Alto, …
Head, age 42
Palo Alto, Iowa · implied b. ~1888 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Petersen |
| Given Name | Peter G |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 25 |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | O |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Palo-Alto-County, Iowa
Head, age 52
Palo-Alto-County, Iowa · implied b. ~1888 — 5 household members
| Surname | Peterson |
| Given Name | Peter G. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Lost Island Twp |
| 1935 Residence (County) | Palo Alto |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | 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 Peter Peterson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Peter Peterson
Head · 1940 · age 52 · b. ~1888 · 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 — Palo-Alto-County, Iowa
Open full size
1940 US Federal Census — Palo-Alto-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01189-00301)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Merle Russ | 28 | Head | Farmer | Iowa |
| 2 | Esther D. Russ | 26 | Wife | — | Iowa |
| 3 | Peter O. Gorgensen | 73 | Head | Farmer | Denmark |
| 4 | Marie Gorgensen | 45 | Wife | — | Denmark |
| 5 | Peter G. Peterson THIS PERSON | 52 | Head | Farmer | Iowa |
| 6 | Elsie Peterson | 43 | Wife | — | Iowa |
| 7 | Earl M. Peterson | 23 | Son | Farmer | Iowa |
| 8 | Norman J. Peterson | 20 | Son | Laborer | Iowa |
| 9 | Doris Peterson | 15 | Daughter | — | Iowa |
| 10 | Oscar Johnson | 47 | Head | Road Maintainer | Iowa |
| 11 | Nora Johnson | 33 | Wife | — | Iowa |
| 12 | Arlene Johnson | 13 | Daughter | — | Iowa |
| 13 | Leroy Johnson | 12 | Son | — | Iowa |
| 14 | Corine Johnson | 10 | Daughter | — | Iowa |
| 15 | Virgil Johnson | 7 | Son | — | Iowa |
| 16 | Robert Johnson | 5 | Son | — | Iowa |
| 17 | Carol Johnson | 3 | Daughter | — | Iowa |
| 18 | Henry Petersen | 42 | Head | Farmer | Iowa |
| 19 | Grace Petersen | 37 | Wife | — | Iowa |
| 20 | Ronald Petersen | 15 | Son | — | Iowa |
| 21 | Betty Petersen | 8 | Daughter | — | Iowa |
| 22 | Wayne Petersen | 5 | Son | — | Iowa |
| 23 | Holger Knudsen | 44 | Head | Farmer | Iowa |
| 24 | Vola Knudsen | 43 | Wife | — | Iowa |
| 25 | Frances Knudsen | 20 | Daughter | Teacher | Iowa |
| 26 | Mavis Knudsen | 7 | Daughter | — | Iowa |
| 27 | Martha Knudsen | 4 | Daughter | — | Iowa |
| 28 | Avery Pringley | 25 | Hired Man | Farm Laborer | Iowa |
| 29 | Theodore J. Luss | Russ | 46 | Head | Farmer | Iowa |
| 30 | Marie Luss | Russ | 41 | Wife | — | Iowa |
| 31 | Raymond Luss | Russ | 19 | Son | Farmer | Iowa |
| 32 | Howard Luss | Russ | 17 | Son | — | Iowa |
| 33 | Mary J. Luss | Russ | 15 | Daughter | — | Iowa |
| 34 | Paul Luss | Russ | 13 | Son | — | Iowa |
| 35 | Ruth N. Luss | Russ | 11 | Daughter | — | Iowa |
| 36 | Marjorie Luss | Russ | 5 | Daughter | — | Iowa |
| 37 | James Luss | Russ | 2 | Son | — | Iowa |
| 38 | Raymond Haag | 27 | Head | Farmer | Minnesota |
| 39 | Delmar Nelson | 48 | Head | Buttermaker | Iowa |
| 40 | Gertrude Nelson | 41 | Wife | — | 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)