RT
Roy Thompson — 1940 US Census Record
Model Tree available1940 United States Federal Census · King-County, Washington
Our Model Tree links this Roy Thompson across the 1920, 1930 and 1940 US Censuses in King-County, Washington (XGBoost, ~Confirmed), with identified parents Marie & Marie — first a head (b.~1914), then head of a 4-person household.
Age 26
b. ~1914
Male
Head
Born: Washington
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | King-County, Washington |
| Surname | Thompson |
| Given Name | Roy A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Washington |
| 1935 Residence (City) | Seattle City |
| 1935 Residence (County) | King |
| Additional Details | |
| Occupation | Fish Dealer |
| Industry | Retail Market |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same house |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Occupation | Fish Dealer |
| Township / Ward | Seattle City |
| Est. Birth Year | ~1914 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Roy | Age | Birth yr |
|---|---|---|---|---|
| Roy Thompson | Head | — | 26 | ~1914 |
| Cecilia Thompson | Daughter | — | 2 | ~1938 |
| Cecilia Thompson | Spouse | — | 26 | ~1914 |
| Marie Thompson | Other | — | 53 | ~1887 |
Census Appearances
1920
King, Washington
Son, age 6
King, Washington · implied b. ~1914 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Roy |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Mother Tongue | Norwegian |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
Son, age 16
King, Washington · implied b. ~1914 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Ray |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| 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
Head, age 26
King-County, Washington · implied b. ~1914 — 4 household members
| Surname | Thompson |
| Given Name | Roy A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Washington |
| 1935 Residence (City) | Seattle City |
| 1935 Residence (County) | King |
| Occupation | Fish Dealer |
| Industry | Retail Market |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | Hs 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 Roy Thompson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Marie Thompson (~0.92 confidence) and mother Marie Thompson (~0.92 confidence) and father Andrew Thompson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Marie Thompson
b. ~1872
Source mother
● Household
· direct · ~0.92
Mother
Marie Thompson
b. ~1882
Source mother
● Household
· direct · ~0.92
Father
Andrew Thompson
b. ~1889
Source father
● Household
· direct · ~0.92
This person
Anchor record
Roy Thompson
Head · 1940 · age 26 · b. ~1914 · 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
39 people indexed on this census page (nara:1940:m-t0627-04375-00118)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Virginia L. Roberts | 15 | Daughter | — | California |
| 2 | Harry L. Matthews | 29 | Lodger | Metal Mechanic | Italy |
| 4 | Clyde L. Merrill | 32 | Head | Iron Molder | Kansas |
| 5 | Doris A. Merrill | 31 | Wife | — | Kansas |
| 6 | Clyde L. Jr. Merrill | 6 | Son | — | Washington |
| 7 | William J. Merrill | 5 | Son | — | Washington |
| 8 | June D. Merrill | 1 | Daughter | — | Washington |
| 9 | William J. Hendricks | 53 | Head | Carpenter Contractor | Sweden |
| 10 | Reid S. Hendricks | 23 | Son | Apprentice Carpenter | Washington |
| 11 | Frances M. Hendricks | 25 | Daughter | — | Washington |
| 12 | Ben H. Johnson | 36 | Head | Relaw Man | Louisiana |
| 13 | Rosa N. Johnson | 32 | Wife | — | California |
| 14 | Alexander I. Murray | 43 | Head | Classified Clerk | Scotland |
| 15 | Daisy F. Murray | 37 | Wife | — | England |
| 16 | June B. Murray | 18 | Daughter | — | Washington |
| 17 | Kenneth Murray | 17 | Son | — | Washington |
| 18 | Roy A. Thompson THIS PERSON | 26 | Head | Fish Dealer | Washington |
| 19 | Cecilia P. Thompson | 26 | Wife | Nurse P. N. | Washington |
| 20 | Cecilia M. Thompson | 2 | Daughter | — | Washington |
| 21 | Marie Thompson | 53 | Mother | House Machine Operator | Norway |
| 22 | Emil Simoneit | 45 | Head | — | Italy |
| 23 | Fern B. Simoneit | 47 | Wife | — | Kansas |
| 24 | Mike Nielsen | 42 | Head | Basket Maker | Denmark |
| 25 | Elizabeth Nielsen | 47 | Wife | — | Ireland |
| 26 | Thomas P. Nielsen | 22 | Son | Hydraulic Work | Washington |
| 27 | Lloyd J. Nielsen | 20 | Son | Rug & Linoleum | Washington |
| 28 | Henry W. Peterson | 61 | Head | Carpenter | Finland |
| 29 | Alina V. Peterson | 58 | Wife | — | Finland |
| 30 | Elna M. Peterson | 27 | Daughter | Music Teacher | Washington |
| 31 | Lilly M. Peterson | 25 | Daughter | Comptometer Operator | Washington |
| 32 | Florence F. Peterson | 25 | Daughter | Office Work | Washington |
| 33 | Sophie Fjello | 70 | Head | — | Wisconsin |
| 34 | Lorents T. Hansen | 40 | Head | Fisherman | Norway |
| 35 | Rakel Hansen | 32 | Wife | — | Norway |
| 36 | Larry A. Hansen | 3 | Son | — | Washington |
| 37 | Sylvia Hansen | 1 | Daughter | — | Washington |
| 38 | William L. Leclair | 39 | Head | Logger | Montana |
| 39 | Beatrice M. Leclair | 35 | Wife | — | South Dakota |
| 40 | Earl A. Smith | 13 | Lodger | — | Washington |
Related Census Records
Pedigree Summary
Roy
Gen 1 · 3 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)