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Robert Olson — 1940 US Census Record
Model Tree available1940 United States Federal Census · King-County, Washington
Our Model Tree links this Robert Olson across the 1920, 1930 and 1940 US Censuses in King-County, Washington (XGBoost, ~Confirmed), with identified parents Richard & Petra — first a son (b.~1912), then head of a 3-person household.
Age 28
b. ~1912
Male
Son
Born: Washington
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | King-County, Washington |
| Surname | Olson |
| Given Name | Robert E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Enumclaw town |
| 1935 Residence (County) | King |
| Additional Details | |
| Occupation | Office Manager |
| Industry | Logging Co. |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1081 |
| Highest Grade | C 5 |
| 1935 Residence | Same House |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Occupation | Office Manager |
| Township / Ward | Enumclaw Town |
| Est. Birth Year | ~1912 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Robert Olson | Son | — | 28 | ~1912 |
| Elmer Olson | Head | — | 56 | ~1884 |
| Mayme Olson | Spouse | — | 51 | ~1889 |
Census Appearances
1920
King, Washington
Son, age 8
King, Washington · implied b. ~1912 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olson |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Norwegian |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1930
King, Washington
Son, age 18
King, Washington · implied b. ~1912 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olsen |
| Given Name | Robert P. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Can Read/Write | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
King-County, Washington
Son, age 28
King-County, Washington · implied b. ~1912 — 3 household members
| Surname | Olson |
| Given Name | Robert E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Enumclaw town |
| 1935 Residence (County) | King |
| Occupation | Office Manager |
| Industry | Logging Co. |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1081 |
| Highest Grade | C 5 |
| 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 Robert Olson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Richard Olsen (~0.92 confidence) and mother Petra Olson (~0.92 confidence) and father Richard Olson (~0.92 confidence) and father Elmer Olson (~0.92 confidence) and mother Mayme Olson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Richard Olsen
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Petra Olson
b. ~1877
Source mother
● Household
· direct · ~0.92
Father
Richard Olson
b. ~1880
Source father
● Household
· direct · ~0.92
Father
Elmer Olson
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Mayme Olson
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Olson
Son · 1940 · age 28 · b. ~1912 · 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-t0627-04344-00249)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Elsie M. Carlson | 27 | Wife | Book Keeper | Washington |
| 42 | Gary J. Carlson | 1 | Son | — | Washington |
| 43 | P. Milo Schoonover | 25 | Head | Book Keeper | Oregon |
| 44 | Eileen H. Schoonover | 36 | Wife | Beautician | Wisconsin |
| 45 | Gus Stergion | 25 | Head | Concrete Worker | Washington |
| 46 | Dorothy Stergion | 19 | Wife | — | Washington |
| 47 | George F. Laux | 48 | Head | Retail Lumber Store | Nebraska |
| 48 | Lillian Laux | 44 | Wife | — | Washington |
| 49 | Alfred G. Jensen | 42 | Head | Brakeman | Washington |
| 50 | Elsie J. Jensen | 38 | Wife | — | Michigan |
| 51 | Earl R. Jensen | 16 | Son | Newspaper Carrier | Washington |
| 52 | Charles G. Segrist | 64 | Head | Retired Insurance Agnt. | Ohio |
| 53 | Beatrice M. Segrist | 57 | Wife | Housekeeper | Iowa |
| 54 | Calvin D. Segrist | 17 | Son | Newspaper Carrier | Washington |
| 55 | Marlene J. Segrist | 16 | Daughter | — | Washington |
| 56 | S. Joseph Clarke | 51 | Lodger | Construction Inspector | Washington |
| 57 | Bert C. Heath | 33 | Lodger | Oiler | Washington |
| 58 | Kenneth D. Qualseth | 26 | Lodger | Laborer | South Dakota |
| 59 | George E. Allen | 27 | Lodger | High Scaler | North Dakota |
| 60 | Donald P. Anderson | 25 | Lodger | Miner (Tunnel) | California |
| 61 | Mary L. Lendel | 24 | Head | Book Keeper | Washington |
| 62 | Ella B. Lendel | 20 | Partner | Stenographer | Washington |
| 63 | Harvey J. Maye | 48 | Head | Foreman | Canada Eng. |
| 64 | Hattie E. Maye | 47 | Wife | — | Canada Eng. |
| 65 | Jane L. Maye | 13 | Daughter | — | Washington |
| 66 | Peter W. Demko | 34 | Head | Scaler | Washington |
| 67 | Doris I. Demko | 30 | Wife | — | Washington |
| 68 | Ronald P. Demko | 6 | Son | — | Washington |
| 69 | Guy W. Lafromboise | 47 | Head | Part Owner | Washington |
| 70 | Vera E. Lafromboise | 45 | Wife | — | Washington |
| 71 | Pierce E. Lafromboise | 25 | Son | Bookkeeper | Washington |
| 72 | John A. Mckinnon | 34 | Head | Supervising Trucker | Washington |
| 73 | Marjorie M. Mckinnon | 35 | Wife | — | Washington |
| 74 | Janet Lou Mckinnon | 7 | Daughter | — | Washington |
| 75 | Hilda A. Landen | 55 | Head | — | North Dakota |
| 76 | Ida C. Anseth | 36 | Sister | Office Worker | North Dakota |
| 77 | Lena Anseth | 42 | Sister | Office Worker | Minnesota |
| 78 | Elmer R. Olson | 56 | Head | Cruiser | Minnesota |
| 79 | Mayme L. Olson | 51 | Wife | — | Wisconsin |
| 80 | Robert E. Olson THIS PERSON | 28 | Son | Office Manager | Washington |
Pedigree Summary
Robert
Gen 1 · 5 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)