JP
John Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · King-County, Washington
Our Model Tree links this John Peterson across the 1920, 1930 and 1940 US Censuses in King-County, Washington (XGBoost, ~Confirmed), with identified parents Alfred & Emma — first a head (b.~1906), then head of a 5-person household.
Age 34
b. ~1906
Male
Head
Born: Washington
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | King-County, Washington |
| Surname | Peterson |
| Given Name | John A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Washington |
| 1935 Residence (City) | Seattle City |
| 1935 Residence (County) | King |
| Additional Details | |
| Occupation | Assistant Manager |
| Industry | Clothing Merchandise |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 2500 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Occupation | Assistant Manager |
| Township / Ward | Seattle City |
| Est. Birth Year | ~1906 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Mallie Peterson | Daughter | — | 11 | ~1929 |
| John Peterson | Head | — | 34 | ~1906 |
| Florence Miller | Other | — | 20 | ~1920 |
| John Peterson | Son | — | 9 | ~1931 |
| Eleanor Peterson | Spouse | — | 33 | ~1907 |
Census Appearances
1920
King, Washington
Son, age 13
King, Washington · implied b. ~1907 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1930
King, Washington
Head, age 24
King, Washington · implied b. ~1906 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | John A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Washington |
| Age at First Marriage | 21 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Asst. Mgr. |
| Industry | Importing |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 6500 |
| Radio Set | R |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
King-County, Washington
Head, age 34
King-County, Washington · implied b. ~1906 — 5 household members
| Surname | Peterson |
| Given Name | John A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Washington |
| 1935 Residence (City) | Seattle City |
| 1935 Residence (County) | King |
| Occupation | Assistant Manager |
| Industry | Clothing Merchandise |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 2500 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
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 John Peterson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Alfred Peterson (~0.92 confidence) and mother Emma Peterson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Alfred Peterson
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Emma Peterson
b. ~1869
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Peterson
Head · 1940 · age 34 · b. ~1906 · Washington
★ 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 — King-County, Washington
Open full size
1940 US Federal Census — King-County, Washington
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04378-00785)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Abbie D. Preston | 76 | Wife | S | Iowa |
| 2 | Howard D. Coon | 43 | Head | Dentist | Washington |
| 3 | Hilda Coon | 35 | Wife | — | Washington |
| 4 | Jane Coon | 17 | Daughter | — | Maryland |
| 5 | Howard Coon | 14 | Son | — | West Virginia |
| 6 | Phillip Coon | 5 | Son | — | Washington |
| 7 | Steven Coon | 2 | Son | — | Washington |
| 8 | — | None | — | — | — |
| 9 | John A. Peterson THIS PERSON | 34 | Head | Assistant Manager | Washington |
| 10 | Eleanor A. Peterson | 33 | Wife | S | Washington |
| 11 | Mallie Peterson | 11 | Daughter | — | Washington |
| 12 | John A. Jr. Peterson | 9 | Son | — | Washington |
| 13 | Florence Miller | 20 | Servant | Stenographer | Washington |
| 14 | George Dutch | 60 | Head | Merchandise Manager | Michigan |
| 15 | Eva H. Dutch | 55 | Wife | S | Washington |
| 16 | Arthur Dutch | 22 | Son | Shipping Clerk | Washington |
| 17 | Tansa Holzhauser | 17 | Servant | Servant | Washington |
| 18 | Paul D. Rouff | 42 | Head | Salesman | Washington |
| 19 | Irene Rouff | 36 | Wife | S | Minnesota |
| 20 | Richard Rouff | 18 | Son | S | Washington |
| 21 | James Rouff | 14 | Son | S | Washington |
| 22 | Joseph M. Bowling | 70 | Head | Salesman | Maryland |
| 23 | Adele Bowling | 62 | Wife | S | Maryland |
| 24 | Adele Bowling | 36 | Daughter | Stenographer | Washington |
| 25 | Marjorie Bowling | 17 | Daughter | S | Washington |
| 26 | — | None | — | — | — |
| 27 | Kenneth Mcalpin | 50 | Head | Partner | Oregon |
| 28 | Eleanor Mcalpin | 40 | Wife | S | Washington |
| 29 | Eleanor Mcalpin | 21 | Daughter | Assistant Physician | Washington |
| 30 | Kenneth Mcalpin | 16 | Son | S | Washington |
| 31 | Margaret Mcalpin | 9 | Daughter | — | Washington |
| 32 | Roland Gustavel | 25 | Head | Passenger Agent | Washington |
| 33 | Alice Gustavel | 22 | Wife | S | Washington |
| 34 | Jack Gustavel | 0 | Son | — | Washington |
| 35 | Lawrence Pelton | 54 | Head | Salesman | New York |
| 36 | Grace Pelton | 53 | Wife | S | Minnesota |
| 37 | Marian Ratcliff | 50 | — | Teacher | Minnesota |
| 38 | Horace Bushnell | 53 | Head | Engineer | Illinois |
| 39 | Leah Bushnell | 47 | Wife | S | Illinois |
| 40 | Thomas Bushnell | 15 | Son | S | Washington |
Pedigree Summary
John
Gen 1 · 2 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)