CP
Carl Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · King-County, Washington
Our Model Tree links this Carl Peterson across the 1920, 1930 and 1940 US Censuses in King-County, Washington (XGBoost, ~Confirmed), with identified parents Karl & Martha — first a son (b.~1918), then head of a 8-person household.
Age 22
b. ~1918
Male
Son
Born: Washington
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | King-County, Washington |
| Surname | Peterson |
| Given Name | Carl |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Lincoln precinct |
| 1935 Residence (County) | King |
| Additional Details | |
| Occupation | apprentice carpenter |
| Industry | Building |
| Class of Worker | PW |
| Hours Worked | 9 |
| Income (1939) | 800 |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Occupation | Apprentice Carpenter |
| Township / Ward | Lincoln Precinct |
| Est. Birth Year | ~1918 |
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 Carl | Age | Birth yr |
|---|---|---|---|---|
| Leontina Peterson | Daughter | — | 10 | ~1930 |
| Mary Peterson | Daughter | — | 8 | ~1932 |
| Ruby Peterson | Daughter | — | 5 | ~1935 |
| Peer Peterson | Head | — | 47 | ~1893 |
| Kenneth Peterson | Son | — | 17 | ~1923 |
| Carl Peterson | Son | — | 22 | ~1918 |
| Damon Peterson | Son | — | 11 | ~1929 |
| Martha Peterson | Spouse | — | 48 | ~1892 |
Census Appearances
1920
King, Washington
Son, age 2
King, Washington · implied b. ~1918 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Carl O |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Washington |
| Occupation | none |
| Mother Tongue | Swedish |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1930
King, Washington
Son, age 12
King, Washington · implied b. ~1918 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Carl W |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
King-County, Washington
Son, age 22
King-County, Washington · implied b. ~1918 — 8 household members
| Surname | Peterson |
| Given Name | Carl |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Lincoln precinct |
| 1935 Residence (County) | King |
| Occupation | apprentice carpenter |
| Industry | Building |
| Class of Worker | PW |
| Hours Worked | 9 |
| Income (1939) | 800 |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| 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 Carl Peterson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Karl Peterson (~0.92 confidence) and mother Martha Peterson (~0.92 confidence) and father Peer Peterson (~0.92 confidence) and father Olov Peterson (~0.92 confidence) and mother Martha Peterson (~0.92 confidence) and mother Annie Peterson (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Karl Peterson
b. ~1889
Source father
● Household
· direct · ~0.92
Mother
Martha Peterson
b. ~1892
Source mother
● Household
· direct · ~0.92
Father
Peer Peterson
b. ~1893
Source father
● Household
· direct · ~0.92
Father
Olov Peterson
b. ~1893
Source father
● Household
· direct · ~0.92
Mother
Martha Peterson
b. ~1895
Source mother
● Household
· direct · ~0.92
Mother
Annie Peterson
b. ~1897
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Carl Peterson
Son · 1940 · age 22 · b. ~1918 · Washington
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Sibling
Damon Peterson
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kenneth Peterson
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Peterson
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leontina Peterson
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruby Peterson
Sibling · 1940 · age 5
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 — 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-t0627-04345-00157)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Patricia Lee Collins | 9 | Daughter | — | Washington |
| 42 | Helen C. Collins | 5 | Daughter | — | Washington |
| 43 | Terrel E. Collins | 4 | Son | — | Washington |
| 44 | Frank J. Collins | 1 | Son | — | Washington |
| 45 | Jesse Ingram | 33 | Head | Mechanic | Texas |
| 46 | Ethel Ingram | 32 | Wife | — | California |
| 47 | Lloyd Palm | 46 | Head | Mill Operator | Ohio |
| 48 | Margaret Palm | 47 | Wife | — | Canada-English |
| 49 | Ray Palm | 18 | Son | Sawyer Tie Worker | Washington |
| 50 | Esther Palm | 12 | Daughter | — | Washington |
| 51 | Jack Palm | 10 | Son | — | Washington |
| 52 | Peter G. Bergseth | 56 | Head | Laborer | Norway |
| 53 | Carrie Bergseth | 58 | Wife | Housework | Norway |
| 54 | Richard Bergseth | 19 | Son | — | Washington |
| 55 | Peter M. Goranson | 57 | Head | Trucker | Sweden |
| 56 | Anna Goranson | 54 | Wife | — | Sweden |
| 57 | Fabian Goranson | 24 | Son | — | Sweden |
| 58 | Ferdinand Goranson | 22 | Son | — | Sweden |
| 59 | Cornelius N. Bush | 73 | Head | Farmer | Holland |
| 60 | Katie Bush | 66 | Wife | — | Norway |
| 61 | Peer O. Peterson | 47 | Head | Carpenter | Sweden |
| 62 | Martha Peterson | 48 | Wife | — | Sweden |
| 63 | Carl Peterson THIS PERSON | 22 | Son | Apprentice Carpenter | Washington |
| 64 | Kenneth Peterson | 17 | Son | — | Washington |
| 65 | Damon Peterson | 11 | Son | — | Washington |
| 66 | Leontina Peterson | 10 | Daughter | — | Washington |
| 67 | Mary Peterson | 8 | Daughter | — | Washington |
| 68 | Ruby Peterson | 5 | Daughter | — | Washington |
| 69 | James A. Mcfraw | 61 | Head | Miner | Scotland |
| 70 | Caroline Mcfraw | 62 | Wife | — | Scotland |
| 71 | Enorina Columbus | 57 | Head | — | Italy |
| 72 | Marie Stewart | 36 | Daughter | — | Washington |
| 73 | Noreen M. Stewart | 4 | Daughter | — | Washington |
| 74 | Nels J. Nelson | 31 | Head | Piling Lumber | Washington |
| 75 | Carlotta Nelson | 31 | Wife | — | Nebraska |
| 76 | Dorothy Nelson | 3 | Daughter | — | Washington |
| 77 | Dorothy Quist | 23 | Head | — | Denmark |
| 78 | Christ W. Rasmussen | 67 | Lodger | — | Denmark |
| 79 | Stanley Peters | 49 | Head | Trucker | Tennessee |
| 80 | Viva Peters | 40 | Wife | — | Kansas |
Related Census Records
Pedigree Summary
Carl + 5 siblings
Gen 1 · 6 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)