JS
John Swanson — 1940 US Census Record
Model Tree available1940 United States Federal Census · King-County, Washington
Our Model Tree links this John Swanson across the 1920, 1930 and 1940 US Censuses in King-County, Washington (XGBoost, ~Confirmed), with identified parents Anton & Ernest — first a son (b.~1921), then head of a 5-person household.
Age 19
b. ~1921
Male
Son
Born: Washington
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | King-County, Washington |
| Surname | Swanson |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Newcastle Precinct |
| Additional Details | |
| Occupation | new worker |
| Hours Worked | 32 |
| Highest Grade | H 4 |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Occupation | New Worker |
| Township / Ward | Newcastle Precinct |
| Est. Birth Year | ~1921 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Ruth Swanson | Daughter | — | 17 | ~1923 |
| Ernest Swanson | Head | — | 52 | ~1888 |
| John Swanson | Son | — | 19 | ~1921 |
| George Swanson | Son | — | 15 | ~1925 |
| Eilda Swanson | Spouse | — | 46 | ~1894 |
Census Appearances
1920
King, Washington
Son, age
King, Washington · implied b. ~1920 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Swanson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1930
King, Washington
Son, age 10
King, Washington · implied b. ~1920 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Swanson |
| Given Name | John E |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Washington |
| Can Read/Write | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
King-County, Washington
Son, age 19
King-County, Washington · implied b. ~1921 — 5 household members
| Surname | Swanson |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Newcastle Precinct |
| Occupation | new worker |
| Hours Worked | 32 |
| Highest Grade | H 4 |
| 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 Swanson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Anton Swanson (~0.92 confidence) and father Ernest Swanson (~0.92 confidence) and mother Marie Swanson (~0.92 confidence) and mother Eilda Swanson (~0.92 confidence) and mother Hilda Swanson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Anton Swanson
b. ~1888
Source father
● Household
· direct · ~0.92
Father
Ernest Swanson
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Marie Swanson
b. ~1888
Source mother
● Household
· direct · ~0.92
Mother
Eilda Swanson
b. ~1894
Source mother
● Household
· direct · ~0.92
Mother
Hilda Swanson
b. ~1894
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Swanson
Son · 1940 · age 19 · b. ~1921 · Washington
★ You are viewing this record
Sibling
Ruth Swanson
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Swanson
Sibling · 1940 · age 15
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
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-t0627-04345-00644)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Donald Glenn | 11 | son | — | Washington |
| 42 | Arlene Glenn | 5 | daughter | — | Washington |
| 43 | Ray Glenn | 3 | son | — | Washington |
| 44 | Alfred Burney | 53 | head | Painter, Contractor | Michigan |
| 45 | Anna Burney | 49 | wife | — | Michigan |
| 46 | Herbert Shute | 34 | head | Laborer | Oregon |
| 47 | Charlotte Perkins | 30 | head | — | Louisiana |
| 48 | George Fullenwider | 51 | head | Mechanic | Indiana |
| 49 | Alfred Newman | 65 | head | Miner | England |
| 50 | Fred Berg | 55 | head | Miner | Finland |
| 51 | Mary Berg | 52 | wife | — | Finland |
| 52 | Odin Berg | 24 | son | Laborer | Washington |
| 53 | Glen Berg | 17 | son | — | Washington |
| 54 | John Martinson | 49 | head | Miner | Finland |
| 55 | Ida Martinson | 49 | wife | — | Finland |
| 56 | Elsa Martinson | 12 | daughter | — | Washington |
| 57 | Newcastle Unincorporated | None | — | — | — |
| 58 | Edward J. Stines | 62 | head | Blacksmith | England |
| 59 | Harriet Stines | 59 | wife | — | England |
| 60 | Paul Treadwell | 45 | head | Miner | Washington |
| 61 | Ernest Swanson | 52 | head | Carpenter | Sweden |
| 62 | Eilda Swanson | 46 | wife | — | Washington |
| 63 | John Swanson THIS PERSON | 19 | son | New Worker | Washington |
| 64 | Ruth Swanson | 17 | daughter | — | Washington |
| 65 | George Swanson | 15 | son | — | Washington |
| 66 | J. H. Dilful | 27 | head | Wood Cutter | Washington |
| 67 | Doris Dilful | 26 | wife | — | Washington |
| 68 | Joe Dilful | 5 | son | — | Washington |
| 69 | Douglas Dilful | 4 | son | — | Washington |
| 70 | Martin Chapman | 41 | head | Miner | Washington |
| 71 | Mabel Chapman | 38 | wife | — | Washington |
| 72 | Martin John Chapman | 16 | son | — | Washington |
| 73 | Donald Leroy Chapman | 11 | son | — | Washington |
| 74 | Frank Akren | 59 | head | Laborer | Pennsylvania |
| 75 | Hilda Akren | 39 | wife | — | Kansas |
| 76 | Thomas Bradshaw | 84 | head | — | England |
| 77 | Ellis Pounds | 32 | head | Junk Dealer | North Dakota |
| 78 | Neva Pounds | 33 | wife | — | Oklahoma |
| 79 | Nels Berglund | 70 | head | — | Sweden |
| 80 | Kristina Berglund | 68 | wife | — | Sweden |
Pedigree Summary
John + 2 siblings
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)