BT
Bertha Thompson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · King-County, Washington
Our Model Tree links this Bertha Thompson across the 1920, 1930 and 1940 US Censuses in King-County, Washington (XGBoost, ~Confirmed) — first a spouse (b.~1887), then head of a 4-person household.
Age 53
b. ~1887
Female
Spouse
Born: Finland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | King-County, Washington |
| Surname | Thompson |
| Given Name | Bertha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Finland |
| 1935 Residence (City) | Juanita |
| 1935 Residence (County) | King |
| Naturalization Status | First papers filed |
| Additional Details | |
| Hours Worked | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth Country | Finland |
| Birthplace (normalized) | finland |
| Township / Ward | Juanita |
| Est. Birth Year | ~1887 |
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 Bertha | Age | Birth yr |
|---|---|---|---|---|
| Sylvia Hanson | Daughter | — | 29 | ~1911 |
| Edward Hanson | Other | — | 29 | ~1911 |
| Sophia Lillberg | Other | — | 55 | ~1885 |
| Bertha Thompson | Spouse | — | 53 | ~1887 |
Census Appearances
1920
King, Washington
Spouse, age 32
King, Washington · implied b. ~1888 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Bertha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Finland |
| Year of Immigration | 1906 |
| Naturalization Status | Alien |
| Father's Birthplace | Finland |
| Mother's Birthplace | Finland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Finnish |
| Birth Country | Finland |
| Birthplace (normalized) | finland |
1930
King, Washington
Other, age 44
King, Washington · implied b. ~1886 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Bertha |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Finland |
| Naturalization Status | Alien |
| Year of Immigration | 1907 |
| Age at First Marriage | 23 |
| Father's Birthplace | Finland |
| Mother's Birthplace | Finland |
| Can Read/Write | Yes |
| Mother Tongue | Finnish |
| Birth Country | Finland |
| Birthplace (normalized) | finland |
1940
King-County, Washington
Spouse, age 53
King-County, Washington · implied b. ~1887 — 4 household members
| Surname | Thompson |
| Given Name | Bertha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Finland |
| 1935 Residence (City) | Juanita |
| 1935 Residence (County) | King |
| Naturalization Status | First papers filed |
| Hours Worked | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth Country | Finland |
| Birthplace (normalized) | finland |
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 Bertha Thompson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Bertha Thompson
Spouse · 1940 · age 53 · b. ~1887 · 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
10 people indexed on this census page (nara:1940:m-t0627-04344-00820)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Bertha Thompson THIS PERSON | 53 | Wife | — | Finland |
| 42 | Edward L Hanson | 29 | Son-in-law | Lubricator | Wash |
| 43 | Sylvia Hanson | 29 | Daughter | — | Oregon |
| 44 | Sophia Lillberg | 55 | Sister | — | Finland |
| 45 | Victor Mielon | 57 | Head | Miner | Finland |
| 46 | Elizabeth Mielon | 54 | Wife | — | Finland |
| 47 | Chester Mielon | 19 | Son | — | Alaska |
| 48 | Selby Mielon | 18 | Son | — | Alaska |
| 49 | Andrew Anderson | 57 | Head | Farmer | Finland |
| 50 | Emilia S Anderson | 54 | Wife | Farm Helper | Germany |
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)