JP
John Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Grant-County, Washington
Our Model Tree links this John Peterson across the 1920, 1930 and 1940 US Censuses in Grant-County, Washington (XGBoost, ~Confirmed), with identified parents John & Sam — first a son (b.~1916), then head of a 2-person household.
Age 24
b. ~1916
Male
Son
Born: Washington
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Grant-County, Washington |
| Surname | Peterson |
| Given Name | John G |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Township 20 Range 28 E Precinct 19 |
| 1935 Residence (County) | Grant |
| Additional Details | |
| Occupation | Farmworker |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 70 |
| Highest Grade | No 7 |
| 1935 Residence | Same house |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Occupation | Farmworker |
| Township / Ward | Township 20 Range 28 E Precinct 19 |
| Est. Birth Year | ~1916 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Peterson | Head | — | 64 | ~1876 |
| John Peterson | Son | — | 24 | ~1916 |
Census Appearances
1920
Grant, Washington
Son, age 4
Grant, Washington · implied b. ~1916 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Norway |
| Mother's Birthplace | Nebraska |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1930
Grant, Washington
Son, age 14
Grant, Washington · implied b. ~1916 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | John V. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Norway |
| Mother's Birthplace | Nebraska |
| Can Read/Write | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
Grant-County, Washington
Son, age 24
Grant-County, Washington · implied b. ~1916 — 2 household members
| Surname | Peterson |
| Given Name | John G |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Township 20 Range 28 E Precinct 19 |
| 1935 Residence (County) | Grant |
| Occupation | Farmworker |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 70 |
| Highest Grade | No 7 |
| 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 John Peterson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Peterson (~0.92 confidence) and father Sam Peterson (~0.92 confidence) and father John Peterson (~0.92 confidence) and mother Gertrude Peterson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Peterson
b. ~1876
Source father
● Household
· direct · ~0.92
Father
Sam Peterson
b. ~1876
Source father
● Household
· direct · ~0.92
Father
John Peterson
b. ~1877
Source father
● Household
· direct · ~0.92
Mother
Gertrude Peterson
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Peterson
Son · 1940 · age 24 · b. ~1916 · 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 — Grant-County, Washington
Open full size
1940 US Federal Census — Grant-County, Washington
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04339-00354)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Graves Louise E Graves | 54 | wife | — | Washington |
| 42 | George E Joyear | 40 | head | Farmer | Minnesota |
| 43 | Irma M Joyear | 36 | wife | — | Minnesota |
| 44 | Marguerite P Joyear | 14 | daughter | — | Minnesota |
| 45 | George M Joyear | 12 | son | — | Minnesota |
| 46 | Glen E Joyear | 10 | son | — | Minnesota |
| 47 | Joann R Joyear | 6 | daughter | — | Washington |
| 48 | Virginia M Joyear | 3 | daughter | — | Washington |
| 49 | Rodney L Joyear | 1 | son | — | Washington |
| 50 | Jasper P Spencer | 77 | head | — | Kentucky |
| 51 | Harry S Spencer | 55 | son | — | Kentucky |
| 52 | Mary E Brown | 63 | head | — | Finland |
| 53 | Willard D Van Slyke | 83 | head | — | Indiana |
| 54 | Luella Van Slyke | 77 | wife | — | Indiana |
| 55 | Eilen Heller | 14 | niece | — | Washington |
| 56 | John A Morrison | 49 | hired hand | Farmworker | New York |
| 57 | Al W Purdy | 77 | head | — | Ohio |
| 58 | Howard T Varney | 28 | head | Farmworker | Washington |
| 59 | Mary B Varney | 26 | wife | — | Canada |
| 60 | Mary B Varney | 6 | daughter | — | Washington |
| 61 | Billie J Varney | 4 | daughter | — | Washington |
| 62 | Judith Varney | 1 | daughter | — | Washington |
| 63 | Clarence A Weakes | 48 | head | Farmer | Wisconsin |
| 64 | Madge Weakes | 38 | wife | — | Iowa |
| 65 | Allen A Weakes | 18 | son | Farmworker | Washington |
| 66 | Dorothy J Weakes | 16 | daughter | — | Washington |
| 67 | Russel C Weakes | 13 | son | — | Washington |
| 68 | Charles A Samelson | 66 | head | Farmer | Sweden |
| 69 | Alice J Samelson | 59 | wife | — | Nebraska |
| 70 | Martin A Mcmorrow | 36 | head | Farmworker | Wisconsin |
| 71 | Hazel Mcmorrow | 28 | wife | 190 | Idaho |
| 72 | Keith W Mcmorrow | 5 | son | — | Washington |
| 73 | Michael T Mcmorrow | 1 | son | — | Washington |
| 74 | John A Peterson | 64 | head | Farmworker | Norway |
| 75 | John G Peterson THIS PERSON | 24 | son | Farmworker | Washington |
| 76 | Ernie B Crumb | 45 | head | Farmer | North Dakota |
| 77 | Jenny Crumb | 39 | wife | — | Minnesota |
| 78 | Nels H Monson | 68 | head | — | Sweden |
| 79 | Walter C Carlson | 32 | head | Farmer | Washington |
| 80 | Mildred Carlson | 29 | wife | — | Nebraska |
Pedigree Summary
John
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)