JO
John Olsen — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Clark, Washington
Our Model Tree links this John Olsen across the 1930 and 1940 US Censuses in Clark, Washington (XGBoost, ~Confirmed) — first a son (b.~1911), then head of a 9-person household.
Age 19
b. ~1911
Male
Son
Born: Washington
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Clark, Washington |
| Surname | Olsen |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Additional Details | |
| Occupation | Help |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Occupation | Help |
| Township / Ward | Dole Precinct |
| Est. Birth Year | ~1911 |
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.
9 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Helga Olsen | Daughter | — | 14 | ~1916 |
| Carl Olsen | Son | — | 23 | ~1907 |
| Anna Olsen | Daughter | — | 12 | ~1918 |
| Marguerite Olsen | Daughter | — | 10 | ~1920 |
| August Olsen | Head | — | 48 | ~1882 |
| John Olsen | Son | — | 19 | ~1911 |
| Erick Olsen | Son | — | 16 | ~1914 |
| Hjalmar Olsen | Son | — | 21 | ~1909 |
| Emma Olsen | Other | — | 54 | ~1876 |
Census Appearances
1930
Clark, Washington
Son, age 19
Clark, Washington · implied b. ~1911 — 9 household members
| Surname | Olsen |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Help |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
Clark-County, Washington
Son, age 29
Clark-County, Washington · implied b. ~1911 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Pole Precinct 12 |
| 1935 Residence (County) | Clark |
| Occupation | Caterpillar Driver |
| Industry | Logging camp |
| Class of Worker | PW |
| Hours Worked | 8 |
| Income (1939) | 30 |
| Highest Grade | 8 |
| 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 Olsen across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Olsen
Son · 1930 · age 19 · b. ~1911 · Washington
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Sibling
Anna Olsen
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marguerite Olsen
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carl Olsen
Sibling · 1930 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Erick Olsen
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hjalmar Olsen
Sibling · 1930 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helga Olsen
Sibling · 1930 · age 14
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
1930 US Federal Census — Clark, Washington
Open full size
1930 US Federal Census — Clark, Washington
Page Contents
50 people indexed on this census page (ia:1930:15thcensus2485unit:0412)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Peter Andersen | 59 | Head | Laborer | Sweden |
| 2 | R. G. Amnecker | 42 | Head | Laborer | Oregon |
| 3 | Marie Amnecker | 21 | Wife-H | None | Washington |
| 4 | Edward White | 38 | Head | Engineer | Oregon |
| 5 | Lillian White | 33 | Wife-H | None | West Virginia |
| 6 | Edward B. White | 6 | Son | None | Oregon |
| 7 | Dorothy (Adopted) White | 3 | Daughter | None | Washington |
| 8 | Daniel (Adopted) White | 3 | Son | None | Washington |
| 9 | Olive W. Burton | 21 | Boarder | Helper | Iowa |
| 10 | Christiana Falk | 42 | Servant | Servant | Norway |
| 11 | Archie Womack | 37 | Head | Engineer | Kentucky |
| 12 | Marie Womack | 19 | Wife-H | None | Washington |
| 13 | Carrol Munston | 52 | Head | Farmer | California |
| 14 | Gertie Munston | 42 | Wife-H | Helper | Kansas |
| 15 | Elmer Munston | 41 | Head | Farmer | California |
| 16 | Leon West | 17 | Boarder | Help | S. Dakota |
| 17 | August Olsen | 48 | Head | Farmer | Sweden |
| 18 | Emma Olsen | 54 | Wife-H | None | Sweden |
| 19 | Carl Olsen | 23 | Son | Laborer | Washington |
| 20 | Hjalmar Olsen | 21 | Son | Laborer | Washington |
| 21 | John Olsen THIS PERSON | 19 | Son | Help | Washington |
| 22 | Erick Olsen | 16 | Son | Help | Washington |
| 23 | Helga Olsen | 14 | Daughter | None | Washington |
| 24 | Anna Olsen | 12 | Daughter | None | Washington |
| 25 | Marguerite Olsen | 10 | Daughter | None | Washington |
| 26 | Leo Haggerty | 34 | Head | Car Inspector | Iowa |
| 27 | Freda Haggerty | 30 | Wife-H | None | Montana |
| 28 | Louise Haggerty | 11 | Daughter | None | Montana |
| 29 | Delphine Haggerty | 9 | Daughter | None | Montana |
| 30 | Betty Jean Haggerty | 7 | Daughter | None | Oregon |
| 31 | Verna Haggerty | 5 | Daughter | None | Oregon |
| 32 | — | None | — | — | — |
| 33 | — | None | — | — | — |
| 34 | — | None | — | — | — |
| 35 | — | None | — | — | — |
| 36 | — | None | — | — | — |
| 37 | — | None | — | — | — |
| 38 | — | None | — | — | — |
| 39 | — | None | — | — | — |
| 40 | — | None | — | — | — |
| 41 | — | None | — | — | — |
| 42 | — | None | — | — | — |
| 43 | — | None | — | — | — |
| 44 | — | None | — | — | — |
| 45 | — | None | — | — | — |
| 46 | — | None | — | — | — |
| 47 | — | None | — | — | — |
| 48 | — | None | — | — | — |
| 49 | — | None | — | — | — |
| 50 | — | None | — | — | — |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)